EP2591343A1 - Dispositif de detection et/ou quantification electrique par empreinte moleculaire de composes organophosphores - Google Patents
Dispositif de detection et/ou quantification electrique par empreinte moleculaire de composes organophosphoresInfo
- Publication number
- EP2591343A1 EP2591343A1 EP11741636.2A EP11741636A EP2591343A1 EP 2591343 A1 EP2591343 A1 EP 2591343A1 EP 11741636 A EP11741636 A EP 11741636A EP 2591343 A1 EP2591343 A1 EP 2591343A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- group
- detecting
- quantifying
- organophosphorus compound
- organophosphorus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- GWVMLCQWXVFZCN-UHFFFAOYSA-N isoindoline Chemical compound C1=CC=C2CNCC2=C1 GWVMLCQWXVFZCN-UHFFFAOYSA-N 0.000 description 1
- 125000000904 isoindolyl group Chemical group C=1(NC=C2C=CC=CC12)* 0.000 description 1
- 125000005956 isoquinolyl group Chemical group 0.000 description 1
- 125000001786 isothiazolyl group Chemical group 0.000 description 1
- 125000000842 isoxazolyl group Chemical group 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 229960000453 malathion Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- CAAULPUQFIIOTL-UHFFFAOYSA-N methyl dihydrogen phosphate Chemical compound COP(O)(O)=O CAAULPUQFIIOTL-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 125000002757 morpholinyl group Chemical group 0.000 description 1
- 125000004593 naphthyridinyl group Chemical group N1=C(C=CC2=CC=CN=C12)* 0.000 description 1
- 231100000189 neurotoxic Toxicity 0.000 description 1
- 230000002887 neurotoxic effect Effects 0.000 description 1
- 239000012244 neurotoxicant Substances 0.000 description 1
- 231100000421 neurotoxicant Toxicity 0.000 description 1
- 230000001682 neurotoxicant effect Effects 0.000 description 1
- 239000002858 neurotransmitter agent Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000006574 non-aromatic ring group Chemical group 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 239000012038 nucleophile Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 150000004045 organic chlorine compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000001715 oxadiazolyl group Chemical group 0.000 description 1
- 125000002971 oxazolyl group Chemical group 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- LCCNCVORNKJIRZ-UHFFFAOYSA-N parathion Chemical compound CCOP(=S)(OCC)OC1=CC=C([N+]([O-])=O)C=C1 LCCNCVORNKJIRZ-UHFFFAOYSA-N 0.000 description 1
- RLBIQVVOMOPOHC-UHFFFAOYSA-N parathion-methyl Chemical compound COP(=S)(OC)OC1=CC=C([N+]([O-])=O)C=C1 RLBIQVVOMOPOHC-UHFFFAOYSA-N 0.000 description 1
- SLIUAWYAILUBJU-UHFFFAOYSA-N pentacene Chemical compound C1=CC=CC2=CC3=CC4=CC5=CC=CC=C5C=C4C=C3C=C21 SLIUAWYAILUBJU-UHFFFAOYSA-N 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- LMNZTLDVJIUSHT-UHFFFAOYSA-N phosmet Chemical compound C1=CC=C2C(=O)N(CSP(=S)(OC)OC)C(=O)C2=C1 LMNZTLDVJIUSHT-UHFFFAOYSA-N 0.000 description 1
- PTMHPRAIXMAOOB-UHFFFAOYSA-L phosphoramidate Chemical compound NP([O-])([O-])=O PTMHPRAIXMAOOB-UHFFFAOYSA-L 0.000 description 1
- NAYYNDKKHOIIOD-UHFFFAOYSA-N phthalamide Chemical compound NC(=O)C1=CC=CC=C1C(N)=O NAYYNDKKHOIIOD-UHFFFAOYSA-N 0.000 description 1
- 125000004592 phthalazinyl group Chemical group C1(=NN=CC2=CC=CC=C12)* 0.000 description 1
- 125000004193 piperazinyl group Chemical group 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002098 polyfluorene Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 125000000561 purinyl group Chemical group N1=C(N=C2N=CNC2=C1)* 0.000 description 1
- 125000004309 pyranyl group Chemical group O1C(C=CC=C1)* 0.000 description 1
- 125000003373 pyrazinyl group Chemical group 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- 125000002098 pyridazinyl group Chemical group 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000719 pyrrolidinyl group Chemical group 0.000 description 1
- 125000001422 pyrrolinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 125000005493 quinolyl group Chemical group 0.000 description 1
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000000992 sputter etching Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 210000000225 synapse Anatomy 0.000 description 1
- UBCKGWBNUIFUST-YHYXMXQVSA-N tetrachlorvinphos Chemical compound COP(=O)(OC)O\C(=C/Cl)C1=CC(Cl)=C(Cl)C=C1Cl UBCKGWBNUIFUST-YHYXMXQVSA-N 0.000 description 1
- 125000003718 tetrahydrofuranyl group Chemical group 0.000 description 1
- 125000003831 tetrazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 125000004568 thiomorpholinyl group Chemical group 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 150000003577 thiophenes Chemical class 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/414—Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
- G01N27/4141—Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS specially adapted for gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0057—Warfare agents or explosives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/16—Phosphorus containing
- Y10T436/163333—Organic [e.g., chemical warfare agents, insecticides, etc.]
Definitions
- the present invention relates to a method and a device for the detection and / or electrical quantification of organophosphorus compounds present in gaseous form or in solution.
- Organophosphorus compounds are molecules consisting of a phosphorus atom to which are bonded different chemical groups whose nature determines the exact properties of the compound. Subject of intensive research on the combat gases during and after the Second World War which led to the development of Sarin, Soman, Tabun, Cyclosarin, GV, VX, VE, VG and VM gases, and molecules simulating the As a result of the action of organophosphorous neurotoxicants of the DFP (Diisopropylfluorophosphate), DCP (diethylchlorophosphate) and DMMP (dimethylmethylphosphonate) type, organophosphorus compounds are today mainly used in agriculture as insecticides or herbicides.
- DFP Diisopropylfluorophosphate
- DCP diethylchlorophosphate
- DMMP dimethylmethylphosphonate
- pesticides based on organophosphorus compounds include Parathion, Malathion, Methyl Parathion, Chlorpyrifos, Diazinon, Dichlorvos, Phosmet, Tetrachlorvinphos and methyl Azinphos.
- organophosphorus compounds have the property of binding particularly strong and stable at the active site of this enzyme. Once fixed, the organophosphorus compound prevents the cholinesterase from degrading acetylcholine, a neurotransmitter released at the level of neuronal synapses during neuronal excitation: lack of degradation of acetylcholine in choline and inactive acetate, the cholinergic receptors are constantly stimulated, which can lead to paralysis and lead to death.
- organophosphorus compounds used as insecticides are not only toxic to insects but also to any animal, man including. For this reason, despite their relatively good biodegradability that allowed them to supplant insecticides based on organochlorine compounds with low biodegradability, their often much higher toxicity requires special precautions for use. In addition, these insecticides being among the most used not only in agriculture by professionals but also by individuals, the Detection and dosing of organophosphorus compounds represent a public health interest and would also be particularly useful for the agri-food industry.
- Kemp acid impregnated filter paper coupled to a fluorophore in an atmosphere having 10 ppm DFP allows the detection of this organophosphorus agent by reading fluorescence under a UV lamp.
- This detection although specific, has various disadvantages. First of all, it needs to be implemented in an environment with reduced brightness which requires at least one ⁇ _> capping D ⁇
- organophosphorus compounds which increases the power consumption and congestion, and therefore decreases the portability, the detection device and / or quantification and organophosphorus compounds. It can not always be used in places where the presence of organophosphorus compounds is to be detected in real time.
- patent application EP 2 866 429 describes chemical sensors intended for the detection of explosives, in particular of nitroaromatic compounds, comprising a fluorescent material capable of forming a charge-transfer complex with the type of molecule to be detected and means of measuring the fluorescence variation of said material.
- These sensors further comprise a filter comprising a polymeric material comprising cavities called "molecular fingerprints" whose geometric and chemical configuration is defined so as to fix the type of molecule to be detected.
- MIPs Molecular Imprinted Polymers
- MIPs Like biological receptors, MIPs have high affinity and good selectivity for a particular family of molecules. A priori, we can design MIPs in the image of any molecule or family of molecules depending on their size or the chemical functions they carry. Thus the synthesis of MIPs is conceivable for any chemical family. Because of their highly crosslinked chemical structure, MIPs have very good thermal and chemical stability.
- a method for the selective detection of organophosphorus compounds has also been described in patent application EP 2154525.
- This describes a device for detecting and / or quantifying organophosphorus compounds comprising an electrical device comprising a separate source electrode and a drain electrode. by a semiconductor material and a device for detecting the variation of the positive charges between the two electrodes.
- the electrodes or the semiconductor material are grafted by receptor molecules capable of reacting with the organophosphorus compounds to be detected to form a positively charged cycle.
- the detection devices of organophosphorus compounds currently available have the disadvantage either of not being selective of the organophosphorus compounds, or of being usable only for testing a sample in solution, or of requiring a fluorescence reader and a test environment. low light or presenting stability problems.
- the so-called "receptor" molecules according to the invention are sensitive and specific molecules of the organophosphorus analytes to be detected, capable of generating an electrical charge after reaction with the organophosphorus compounds. This charge formation then modifies the electrical properties of the semiconductor material.
- the detection is performed by recording over time the evolution of the electrical properties of the semiconductor material. More specifically, it has been shown that this polymeric material grafted with receptor groups makes it possible to increase the number of grafted receptor groups and therefore the sensitivity of the material.
- the molecularly imprinted polymer by allowing only certain species to penetrate into the sensitive material and thus to react with the grafted receptor groups, advantageously makes it possible to increase the selectivity of the sensitive material. while protecting the semiconductor material from many interferents.
- This polymeric material therefore acts as a barrier layer, which is protective of the semiconductor material, making it possible to limit the false positives commonly encountered when working with a bare or grafted semiconductor material, but also for sorting by preferentially allowing the molecules of interest to pass through. .
- This polymeric material thus makes it possible to obtain a double selectivity, both steric and chemical. It makes it possible to detect molecules that have on the one hand a structure similar to the imprint used to form the MIP (size, shape, chemical functions) and on the other hand that are able to react with the receiver incorporated into the MIP polymer.
- a first object of the invention relates to a device for detecting and / or quantifying at least one organophosphorus compound comprising:
- an electrical device comprising a source electrode and a drain electrode separated by a semiconductor material
- a function X capable of reacting with the organophosphorus compound to be detected to form an intermediate group -Z, X being chosen from -CH 2 OH, -CH 2 NH 2 , -CH 2 SH;
- Y being a nucleophilic function chosen from a tertiary amine, an ether or a thioether.
- Said polymeric material comprises so-called molecular cavity cavities whose geometric and chemical configuration makes it possible to let the organophosphorus compounds to be detected in said polymer material.
- leaving group is meant a leaving group, nucleofuge, ie a group capable of being substituted by a nucleophilic group during a nucleophilic attack.
- leaving groups mention may in particular be made of halogen atoms, in particular bromine, chlorine and fluorine atoms, and AlkO-, AlkS- groups, where Alk represents an alkyl group comprising from 1 to 6 carbon atoms. and ArO-, ArS-, where Ar is an aryl group substituted with one or more N0 2 and / or Cl groups or not.
- the exposure of the receptor group to an organophosphorus compound leads to the formation of a nucleophilic intermediate group -Z, resulting from the nucleophilic substitution of an L 3 labile ligand on the phosphorus atom by the nucleophilic function X.
- the generation of an electronic charge makes it possible to abruptly modify the electrostatic environment of the semiconductor material.
- Y-function capable of reacting with said -Z group to form a cycle carrying a positive charge it is understood that the X and Y functions of the receiver group are in spatial proximity to one another, so as to allow intramolecular cyclization.
- the reaction of the nucleophilic function Y on the group -Z leads to the formation of a 5- to 7-membered ring.
- the receptor group is a group of formula -ALX in which A is a group comprising a function Y, and L is a group - (CH 2 ) n -, where n is an integer of 0 to 6. More preferably, n is an integer from 0 to 2.
- X is -CH 2 OH.
- A is a group comprising a tertiary amine, especially a nitrogen heterocycle, more particularly a heterocycloalkyl or a heteroaryl.
- the receptor group is a group of formula (I):
- the receptor group is a group of formula (II):
- MIPs are robust biomimetic systems for selectively capturing a given type of molecule.
- MIPs Like biological receptors, MIPs have high affinity and good selectivity for given molecules.
- a priori we can design MIPs in the image of any molecule or family of functional molecules: thus, we can consider the synthesis of MIPs and more specifically for target molecules for which there is no biological equivalent .
- MIPs Because of their highly crosslinked chemical structure, MIPs have very good thermal and chemical stability. They have on the other hand the advantage of being synthesized from low cost reagents. MIPs can be of different types: organic, organic-inorganic or inorganic hybrid.
- the molecular imprinted polymer can be obtained by a process comprising the steps of:
- polymerization by means of an initiator, and in the presence of a crosslinking agent, of one or more types of polyfunctional monomers (mf), in the presence of a so-called molecular imprinting molecule which can be either directly the molecule to detect either a steric and chemical analogue, and
- the so-called molecular imprint molecule develops interactions with one or more functional monomers in a pore-forming solvent. These may be ionic, hydrophobic or hydrogen bonding interactions.
- a crosslinking agent and a polymerization initiator leads to the formation of a synthetic matrix containing the recognition sites specifically constructed around the imprinted molecule.
- the molecular imprint is removed using a suitable solvent: finally, a polymer matrix is obtained having so-called cavity cavities whose geometrical and magnetic coniiguration is perfectly adapted to the fixation or receiving the molecules of interest, these cavities communicating with the outer surface of the polymer material by means of channels.
- the polymeric material comprising cavities with molecular imprints is obtained by polymerization of a monomer of acrylic or methacrylic acid.
- the imprinting molecule making it possible to obtain a selectivity of the polymer for the organophosphorus compounds, is pinacolyl methylphosphate.
- the initiator may especially be 2,2'-azobis (2,4-dimethyl) valeronitrile.
- the crosslinking agent may be in particular ethylene glycol dimethacrylate.
- the acrylic or methacrylic acid polymer is polymerized in the presence of at least one receptor molecule of formula RALX, in which R is a group which makes it possible to incorporate the group receptor in the imprinted polymer structure, A, L and X being as defined above.
- the compound R-A-L-Y is a compound of formula (Ia) or (Ib
- all or part of the cavities of the molecularly imprinted polymer comprises at least one receptor group as defined in the present application, capable of reacting with the organophosphorus compound (s) to be quantified and / or detected.
- the molecularly imprinted polymer material is a film whose thickness is between 2 nm and 100 nm.
- the invention also relates to a polymer material that can be obtained according to a process comprising the steps of:
- polymerization by means of an initiator, and in the presence of a crosslinking agent, of one or more types of polyfunctional monomers (mf), in the presence of a so-called molecular imprinting molecule which can be either directly the molecule detecting either a steric and chemical analogue and a receptor molecule as defined in the present application, and
- the electrical device may be of resistance type, or of the field effect transistor type.
- the electrical device When the electrical device is of the resistor type, the variation of the intensity of the current between the source and drain electrodes is detected and possibly measured, variation of current intensity caused by the generation of positive charges when the cyclization of the receptor molecule when it comes into contact with the organophosphorus compounds, at a given and known imposed tension between the source and drain electrodes. This variation of current intensity gives access to the variation of conductance.
- the semiconductor portion is separated from the gate by a dielectric material.
- the intensity of the source-drain current is detected and possibly measured, for example, the variation of the intensity of the source-drain current, at a given and known voltage imposed between the source and drain electrodes crossing the transistor. Since the intensity of the current is a function of the gate voltage, the transconductance of the semiconductor is then available.
- the change in conductance or the transconductance variation is indicative of the presence of organophosphorus compounds and is proportional to the concentration of organophosphorus compounds.
- the semiconductor material acts as a transducer of the chemical signal in a signal of an electrical nature. Indeed, when the reaction takes place between an organophosphorus molecule and the polymer-bound receptor, the product of the reaction is a salt having a cation and an anion. The formation of this salt greatly disturbs the electrical properties of the semiconductor material on which the sensitive material is deposited. It is therefore the follow-up of one or more of the electrical properties of the semiconductor material that will inform the detection of organophosphorus compounds.
- the semiconductor material which acts as a conduction channel is a semiconductor material, advantageously based on carbon, silicon, germanium, zinc, gallium, indium, cadmium or a material organic semiconductor.
- the semiconductor material consists of silicon nanowire (s) and / or carbon nanotube (s).
- the semiconductor material is silicon nanowire (s) etched on an SOI (Silicon On Insulator) surface.
- these may be oligomers, polymers or small molecules.
- they may be heterocyclic aromatic compounds such as thiophenes and their derivatives, preferably P3HT (poly-3-hexylthiophene), or polypyrroles and their derivatives, aryiamines and their derivatives, preferably PTA ( polytriarylamine), triarylamine-fluorene copolymers, isochromenones and their derivatives, heterocyclic macrocycles such as porphyrins, phthalocyanines and their derivatives.
- P3HT poly-3-hexylthiophene
- PTA polytriarylamine
- PTA polytriarylamine
- heterocyclic macrocycles such as porphyrins, phthalocyanines and their derivatives.
- Organic semiconductor materials can also be polycyclic aromatic acenes and their derivatives, preferably anthracene or pentacene, arylenes and their derivatives, for example perylene, polyparaphenylene, polyparaphenylenevinylene or polyfluorene.
- Organic semiconductor materials can also be polysilanes and their derivatives.
- the electrodes may be metallic, for example gold, silver, palladium, platinum, titanium, doped silicon, copper or nickel.
- the simple structure of the device allows low cost and large scale production.
- the device can be very small, requiring little energy to operate, promoting its portability.
- Another object of the invention relates to a multi-sensor comprising a device for detecting and / or quantifying organophosphorus compounds according to the present invention.
- multisensor is meant a device comprising a plurality of elementary sensors assembled to each other, these elementary sensors being able to be provided with sensitive materials, and or different transducers.
- Another subject of the present invention relates to a polymer material for detecting and / or quantifying at least one organophosphorus compound, said polymer material carrying at least one receptor group comprising:
- a function X capable of reacting with the organophosphorus compound to be detected to form a -Z group, X being selected from -CH 2 OH, -CH 2 NH 2 , -CH 2 SH;
- Y being a nucleophilic function chosen from a tertiary amine, an ether or a thioether
- said polymeric material comprising so-called molecular finger cavities whose geometric and chemical configuration is defined so as to allow the organophosphorus compounds to be detected to be detected in said polymeric material.
- the receptor group is a group of formula (I) or (II) as defined above.
- the polymeric material is an acrylic polymer grafted with receptor groups as defined above.
- Another subject of the present invention relates to a method for detecting and / or quantifying at least one organophosphorus compound, characterized in that it comprises the following steps:
- test sample in liquid or gaseous form into contact with a detection and / or quantification device as defined above,
- Alkyl denotes a linear, branched or cyclic aliphatic hydrocarbon chain comprising from 1 to 12 carbon atoms, especially from 1 to 6 carbon atoms. Branched means that one or more lower alkyl groups, such as methyl, ethyl or propyl, are linked to a linear alkyl chain. “Lower alkyl” refers to an alkyl group of 1 to 4 carbon atoms.
- Alkylene refers to a substituted or unsubstituted, branched, linear or cyclic hydrocarbon chain comprising 1 to 12 carbon atoms resulting from the removal of 2 hydrogen atoms to form a divalent group.
- alkylene refers to a substituted or unsubstituted, branched, linear or cyclic hydrocarbon chain comprising 1 to 12 carbon atoms resulting from the removal of 2 hydrogen atoms to form a divalent group.
- methylene -C3 ⁇ 4-
- 1,2-ethanediyl -CH 2 CH 2 -
- Aryl refers to an aromatic group defined as a cyclic group satisfying the Huckel rule, that is to say having a number of delocalized ⁇ electrons equal to (4n + 2).
- Huckel rule that is to say having a number of delocalized ⁇ electrons equal to (4n + 2).
- Arylene refers to an aryl group as defined above wherein 2 hydrogen atoms have been removed to form a divalent group.
- phenylene group By way of example, mention may be made of the phenylene group:
- tertiary amine function is meant in the sense of the present application a function in which the nitrogen atom is not bonded to any atom hydrogen.
- the nitrogen atom may thus be bonded to 3 carbon groups or may be included in an aromatic system such as in a pyridine.
- ether function is meant a group -Alk-O-Alk- or -Alk-O-Ar, in which the term Alk denotes an alkyl or alkylene group and Ar denotes an aryl or arylene group, alkyl groups, alkyls aryls and arylenes being as defined above.
- thioether function is meant a group -Alk-S-Alk-, or -Alk-S-Ar in which the term Alk denotes an alkyl or alkylene group, and Ar denotes an aryl or arylene group, alkyl groups, alkylenes, aryls and arylenes being as defined above.
- heterocycle refers to a substituted or unsubstituted cyclic carboxy group in which the ring moiety comprises at least one heteroatom such as O, N or S.
- the nitrogen and sulfur atoms may be optionally oxidized, and the Nitrogen atom may be optionally substituted in an aromatic or nonaromatic ring.
- heterocycles include heteroaryl and hetero cycloalkyl groups.
- heterocycloalkyl refers to a cycloalkyl group in which one or more carbon atoms are replaced with at least one heteroatom such as -O-, -N- or -S-.
- heterocyclylalkyl groups mention may be made in particular of pyrrolidinyl, pyrrolinyl, imidazolidinyl, imidazolinyl, pirazolidinyl, pirazolinyl, pyrazymyl, pipendyl, piperazinyl, morpholinyl, thiomorpholinyl, tetrahydrofuranyl, dithiolyl, oxathiolyl, dioxazolyl, oxathiazolyl, pyranyl, oxazinyl and oxathiazinyl groups. and oxadiazinyl.
- heteroaryl refers to an aromatic group containing from 5 to 10 carbon atoms in which one or more cyclic carbon atoms are substituted with one or more heteroatoms such as -O-, -N-, -S-.
- heteroaryl group mention may be made in particular of pyrrolyl, furanyl, thienyl, pirazolyl, imidazolyl, thiazolyl, isothiazolyl, isoxazolyl, oxazolyl, oxathiolyl, oxadiazolyl, triazolyl, oxatriazolyl, furazanyl, tetrazolyl, pyridyl, pyrazinyl, pyrimidinyl and pyridazinyl groups.
- merged cyclic systems By way of example of such merged cyclic systems, mention may be made in particular of groups phthalamide, phthalic anhydride, indoline, isoindoline, tetrahydroisoquinoline, chromane, isochromane, chromene, and isochromene.
- Figure 1 shows the synthesis of the polymer material according to the invention.
- a silicon nanowire (s) field effect transistor is prepared from a p-doped SOI wafer (10 B atom / cm).
- the silicon wire of dimensions 70 nm in thickness, 0.2 ⁇ in width and 2 ⁇ in length is obtained by electron lithography and ion beam etching ("ion etching").
- the thickness of the dielectric material (Si0 2 ) is 140 nm.
- the Ti / Au (10/100 nm) source and drain electrodes are produced by electron lithography and resin separation ("Iift-off").
- the degenerate silicon substrate is used as the gate electrode.
- the layer of polymeric molecular imprint material is photocrosslinked at the surface of the semiconductor material as follows.
- the transistor is simultaneously subjected to spinning (30 sec, 3000 rpm) and UV photoirradiation (30 sec).
- the sample is then rinsed with toluene and acetone and placed in methanol overnight to extract the molecular imprint.
- the sample is then rinsed with anhydrous methanol and dried under vacuum.
- a carbon nanotube field effect transistor is prepared by vaporization on a silicon wafer comprising a native oxide layer (dielectric material with a thickness of 100 nm) and source and drain gold electrodes produced by electronic lithography and resin removal ("lift-off"). The electrodes are spaced by a channel of 20 ⁇ .
- a solution of single walled carbon nanotubes (SWCNTs) dispersed in N-methylpyrrolidone (dispersion at 0.05 g / l of SWCNT, passed to the ultrasounds for 90 min and then centrifuged twice 1 hour at 14000 rpm) is nebulized for 10 sec on the layer of dielectric material between the electrodes.
- the degenerate silicon substrate is used as the gate electrode.
- the layer of polymeric molecular imprint material is photocrosslinked at the surface of the semiconductor material as follows.
- the transistor is simultaneously subjected to the spin (30 sec, 3000 rpm) and UV photoirradiation (30 sec).
- the sample is then rinsed with toluene and acetone and placed in methanol overnight to extract the molecular imprint.
- the sample is then rinsed with anhydrous methanol and dried under vacuum.
- Example 2 a new sensor prepared according to Example 1 is used.
- the current 3 ⁇ 4s is then measured as a function of time.
- Triethylamine at a concentration of 75,000 ppm in dry synthetic air for 3 minutes
- Example 4 Detection of diphenylchlorophosphate (DPCP) by a carbon nanotube transistor having on its surface a thin film of molecular imprinting material B prepared according to Example 2. Between each exposure, a new sensor prepared according to Example 2 is used. The source (S), drain (D) and gate (G) electrodes are subject to the following potentials: V. The IDS current is then measured as a function of time.
- DPCP diphenylchlorophosphate
- the IDS current is stable when the sensor is in air only (IDS-10 "10 A) After exposure of the transistor to vapors of organophosphorus compounds (500 ppb of diphenylchlorophosphate in dry synthetic air for 3 minutes), the current IDS increases very rapidly by a factor greater than 10 in less than a minute.It is found experimentally that the variation of the conductance or the variation of the transconductance is indicative of the presence of organophosphorus compounds and is proportional to the number of reacted receptors. With the OPs, the response (variation of the positive charges) is all the more rapid and important that the concentration of OPs is high By performing a calibration curve, a quantification of the OPs can be performed.
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Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1002871A FR2962549B1 (fr) | 2010-07-08 | 2010-07-08 | Dispositif de detection et/ou quantification electrique par empreinte moleculaire de composes organophosphores |
| PCT/FR2011/051564 WO2012004502A1 (fr) | 2010-07-08 | 2011-07-04 | Dispositif de detection et/ou quantification electrique par empreinte moleculaire de composes organophosphores |
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| Publication Number | Publication Date |
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| EP2591343A1 true EP2591343A1 (fr) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11741636.2A Withdrawn EP2591343A1 (fr) | 2010-07-08 | 2011-07-04 | Dispositif de detection et/ou quantification electrique par empreinte moleculaire de composes organophosphores |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20130244334A1 (fr) |
| EP (1) | EP2591343A1 (fr) |
| FR (1) | FR2962549B1 (fr) |
| WO (1) | WO2012004502A1 (fr) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102645471A (zh) * | 2012-03-31 | 2012-08-22 | 无锡百灵传感技术有限公司 | 一种用于检测三氯磷酸酯电化学传感器的制备方法 |
| CN104215674B (zh) * | 2014-09-17 | 2016-07-06 | 扬州工业职业技术学院 | 一种快速检测土壤中烯草酮农药残留的方法 |
| CN111474282B (zh) * | 2020-05-23 | 2022-11-25 | 中国检验检疫科学研究院 | 对待测化合物进行定性/定量检测的方法和试剂盒 |
| CN112540105B (zh) * | 2020-12-11 | 2022-04-15 | 中国科学院上海微系统与信息技术研究所 | 一种用于检测有机磷化合物的气体传感器及其制备方法 |
| GB202114557D0 (en) * | 2021-10-12 | 2021-11-24 | Univ Court Univ St Andrews | Apparatus and methods for detection of chemicals using optical sensors |
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|---|---|---|---|---|
| US5571401A (en) | 1995-03-27 | 1996-11-05 | California Institute Of Technology | Sensor arrays for detecting analytes in fluids |
| US7416703B2 (en) * | 1998-04-28 | 2008-08-26 | The Johns Hopkins University | Polymer based lanthanide luminescent sensors for the detection of organophosphorus compounds |
| FR2846338B1 (fr) | 2002-10-28 | 2006-12-29 | Univ Claude Bernard Lyon | Biocapteur electrochimique multi-enzymatique a algues unicellulaires, procede et utilisation mettant en oeuvre un tel biocapteur |
| WO2005112670A1 (fr) * | 2004-05-24 | 2005-12-01 | Mip Technologies Ab | Polymeres a empreintes moleculaires selectifs des nitrosamines et procedes d'utilisation desdits polymeres |
| US7776269B2 (en) | 2005-03-15 | 2010-08-17 | The United States Of America As Represented By The Secretary Of The Navy | Capacitive based sensing of molecular adsorbates on the surface of single wall nanotubes |
| FR2934685B1 (fr) * | 2008-07-29 | 2010-09-03 | Commissariat Energie Atomique | Detection et/ou quantification electrique de composes organophosphores |
| FR2935705B1 (fr) * | 2008-09-05 | 2010-10-29 | Univ De Technologie De Compiegne | Procede de preparation de polymeres a empreintes moleculaires (pem) par polymerisation radicalaire |
-
2010
- 2010-07-08 FR FR1002871A patent/FR2962549B1/fr not_active Expired - Fee Related
-
2011
- 2011-07-04 EP EP11741636.2A patent/EP2591343A1/fr not_active Withdrawn
- 2011-07-04 WO PCT/FR2011/051564 patent/WO2012004502A1/fr not_active Ceased
- 2011-07-04 US US13/809,092 patent/US20130244334A1/en not_active Abandoned
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| See references of WO2012004502A1 * |
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| Publication number | Publication date |
|---|---|
| US20130244334A1 (en) | 2013-09-19 |
| FR2962549B1 (fr) | 2012-08-24 |
| WO2012004502A1 (fr) | 2012-01-12 |
| FR2962549A1 (fr) | 2012-01-13 |
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