EP1332345A2 - Verfahren und vorrichtung zur evaluierung chemischer reaktionsabläufe - Google Patents
Verfahren und vorrichtung zur evaluierung chemischer reaktionsabläufeInfo
- Publication number
- EP1332345A2 EP1332345A2 EP01988859A EP01988859A EP1332345A2 EP 1332345 A2 EP1332345 A2 EP 1332345A2 EP 01988859 A EP01988859 A EP 01988859A EP 01988859 A EP01988859 A EP 01988859A EP 1332345 A2 EP1332345 A2 EP 1332345A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- reaction
- heat radiation
- sensor device
- processes
- chambers
- 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- Withdrawn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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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1002—Reagent dispensers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
- G01N35/1016—Control of the volume dispensed or introduced
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1065—Multiple transfer devices
Definitions
- the present invention relates to a system for monitoring chemical reaction sequences, in particular for detecting exothermic chemical reaction sequences, and the use of such a system or a heat radiation-sensitive sensor device and a method for monitoring a large number of chemical reaction mixtures.
- the present invention relates to the field of combinatorial chemistry, in particular a method and a device for monitoring and possibly controlling exothermic reaction sequences, preferably in so-called screening methods.
- screening This systematic screening of samples of natural or synthetic origin with suitable systems for the presence of low or high molecular weight substances with certain properties is referred to as "screening".
- screening is an important instrument to gain access to new or improved products or production processes.
- the criteria for success for the results obtained in a screening are the selection or test systems used. They have to be selective and as clear as possible in their informative value, easy to use, quick to implement and easy to reproduce. In the course of the steadily increasing number of test samples, e.g. B.
- HTS high throughput screening
- the object of the present invention is to provide an easy-to-use system for monitoring chemical reaction processes, in particular for detecting exothermic chemical reaction processes, and to provide a method for monitoring chemical reaction processes, in particular for a large number of chemical reaction mixtures.
- a further object of the following invention is to check mass-accumulating substances, such as those that arise, for example, in the context of combinatorial techniques, in a short time unit, in particular thermographically, and in particular to specify a system, a use and a method that are relatively simple with relatively little effort , secure way to enable preferably automated monitoring, in particular for a large number of chemical reaction sequences, for the detection of exothermic energy.
- mass-accumulating substances such as those that arise, for example, in the context of combinatorial techniques, in a short time unit, in particular thermographically, and in particular to specify a system, a use and a method that are relatively simple with relatively little effort , secure way to enable preferably automated monitoring, in particular for a large number of chemical reaction sequences, for the detection of exothermic energy.
- such a system should be able to be used in the context of combinatorial techniques, in particular in automated screening processes, for the selective detection of active compounds or compositions.
- a basic idea of the present invention is to provide a heat-sensitive sensor, in particular an IR camera or the like, in order to increase the heat radiation emitted by reaction mixtures to capture. Detection of exotherm is possible in a simple, inexpensive manner.
- IR here means infrared radiation. Accordingly, an IR camera is to be understood as a camera sensitive to heat radiation. According to a further development, the camera can also deliver other optical signals, for example with regard to a color change of reaction mixtures, the appearance of bubbles (e.g. during boiling) or the like.
- the term "detection of exothermic energy” is primarily to be understood to mean that the occurrence of exothermic energy, that is to say the exothermic course of chemical reactions, is recognized and accordingly can be displayed or relevant data can be output.
- the term is preferably to be understood broadly, so that in particular the detection of the strength of the exothermic energy (intensity of the heat radiation) and / or the chronological sequence of the exothermic reactions can also be recorded.
- the detection and evaluation is preferably carried out by means of the sensor device and an assigned evaluation device. However, some or all of the evaluation can optionally take place in the sensor device.
- the sensor device or its IR camera delivers measurement signals which are processed by the evaluation, in particular taking into account the time course or sequence.
- the processed signals which represent, for example, the time course of the exotherm or the temperature of the individual reaction mixtures, can preferably be displayed, printed and / or output for further processing or storage, for example via a standardized interface or the like.
- the measurement signals can also include additional information, in particular with regard to optical parameters or changes in the monitored reaction mixtures. This additional information is preferably included evaluated and correspondingly output as prepared signals separately or with the signals with regard to exothermic energy.
- the sensor device can monitor the individual reaction chambers or the reaction mixtures located therein individually or in groups sequentially - that is to say one after the other - for example by correspondingly moving the individual reaction chambers or groups of reaction chambers past the sensor device.
- the sensor device is preferably designed for the simultaneous — that is, simultaneous — monitoring of a large number, in particular all of the reaction chambers and the reaction mixtures located therein, thus allowing identification and differentiation of the thermal radiation emitted by the individual reaction mixtures.
- This spatial differentiation is possible in a very simple manner, in particular with the preferably provided IR camera, since a camera is fundamentally provided and suitable for the spatial differentiation of different areas and thus the different reaction mixtures.
- the sensor device or its IR camera deliver, preferably in electrical form, in particular digital measurement signals which - as already explained - can be evaluated.
- data processing devices with appropriate software can easily perform, in particular, automated evaluation, storage, display and the like.
- the sensor device or the IR camera can produce recordings in the conventional sense - in particular photos - which are then used to detect exothermic reaction processes.
- thermo-array a newly developed, automated and miniaturized system with a parallel array is described, which can be used as a highly sensitive array for the determination of exothermic reaction processes, such as polymerizations, addition reactions, condensation reactions, decomposition reactions etc., and all reactions or complex reaction processes, in which an exothermic reaction process predominates.
- exothermic reaction processes such as polymerizations, addition reactions, condensation reactions, decomposition reactions etc.
- all reactions or complex reaction processes in which an exothermic reaction process predominates.
- the system is preferably constructed as a stand-alone system from three combined workstations.
- a dosing system is also integrated.
- the system consists of an IR camera (e.g. IR camera ThermoscanTM SC 500 from FLIR), a multidrop (e.g. Multidrop 384 from Labsystems), a thermomixer (e.g. Thermomixer comfort from Eppendorf) and an eight-channel pipetting system (e.g. dosing device MicroLab SD from Hamilton).
- IR camera e.g. IR camera ThermoscanTM SC 500 from FLIR
- a multidrop e.g. Multidrop 384 from Labsystems
- thermomixer e.g. Thermomixer comfort from Eppendorf
- an eight-channel pipetting system e.g. dosing device MicroLab SD from Hamilton.
- Multidrop and Thermomixer are especially designed for the use of microtiter plates with a variable number of wells, so that a large number of samples can be processed side by side at the same time.
- Fig. 1 is a schematic representation of a system according to the invention.
- Fig. 2 is a diagram of the time course of the temperature of various reaction mixtures.
- system 1 shows a system 1 according to the invention (“high-scan thermo-array”) for monitoring chemical reaction sequences, in particular for detecting exo- Thermer chemical reaction processes.
- the system 1 can also be provided only for the detection of exotherm in general, for example when a limit value, in particular a predetermined temperature, is exceeded.
- the system 1 according to the invention is preferably provided for recording the temporal, thermal course or course of at least one chemical reaction, in particular a large number of chemical reactions.
- the system 1 has a reaction device 2 with a large number of spatially separated reaction chambers 3 for receiving reaction mixtures 4.
- the reaction device 2 is shown in FIG. 1 in a schematic section.
- the reaction device 2 also extends perpendicular to the plane of the drawing, the reaction chambers 3 being arranged, in particular, next to one another and one behind the other in rows and, for example, being open at the top, as shown.
- the system 1 has at least one metering device 5, indicated schematically in FIG. 1, for filling the reaction chambers 3.
- Reaction components 6, 7 can be supplied to the reaction chambers 3 by means of the metering device 5.
- the reaction components 6, 7 can be fed to a reaction chamber 3 simultaneously or in succession.
- the metering device 5 can fill individual reaction chambers 3 in succession or several or all reaction chambers 3 simultaneously.
- the mixing of the reaction components 6, 7 can preferably be carried out beforehand in the respective reaction chamber 3 or as required.
- reaction components 6, 7 or reaction mixtures 4 are supplied in the desired amounts, in particular with different proportions, in order, for example, to test different reaction mixtures 4 or to be able to record and evaluate their behavior.
- different or further reaction components 6, 7 can completely form the individual reaction chambers 3 for formation different reaction mixtures 4 are supplied.
- screening known from the prior art, in particular high-throughput screening (HTS).
- the system 1 has at least one sensor device 8 which can detect heat radiation 9 emitted by the reaction mixtures 4, that is to say is sensitive to heat radiation.
- the heat radiation 9 is infrared (IR) radiation.
- the sensor device 8 is assigned to the reaction device 2 in such a way that the desired detection of the thermal radiation 9 is possible.
- the sensor device 8 can be designed such that only a single reaction chamber 3 can be monitored or the thermal radiation 9 of a reaction mixture 4 located therein can be detected.
- the sensor device 8 is designed in such a way that several, in particular all, reaction chambers 3 can be monitored simultaneously or in parallel, or the heat radiation 9 of reaction mixtures 4 located therein can be detected.
- a plurality of sensor devices 8 are preferably provided for overall monitoring of all reaction chambers 3.
- the sensor devices (EM) 8 and the reaction device 2 can be moved relative to one another in such a way that the reaction chambers 3 can be monitored individually or in groups one after the other.
- the sensor device 8 can be arranged immediately adjacent or in the vicinity of the reaction chambers 3 to be monitored. In the example shown, however, the sensor device 8 is preferably arranged at a distance above the reaction device 2 and the reaction chambers 3, the sensor device 8 allowing simultaneous monitoring of all reaction chambers 3.
- the sensor device 8 comprises an infrared (IR) camera 10. Accordingly, a multiplicity, in particular all the reaction chambers 3 or reaction mixtures 4 located therein, can be monitored simultaneously for exothermic or thermal radiation 9.
- the sensor device 8 or camera 10 can also be sensitive or sensitive in the ultraviolet or, in particular, visible wavelength range and, accordingly, supply additional information about reaction processes or reaction mixtures 4 if required.
- the sensor device 8 or camera 10 is preferably designed such that electrical measurement signals or heat radiation data are provided, which are evaluated as required.
- an evaluation device 11 is directly connected to the sensor device 8 or camera 10.
- the evaluation 8 can also be carried out partially or entirely in the sensor device 8 or camera 10.
- the evaluation device 11 is in particular formed by an evaluation program (not explained in more detail) which runs on a computer, microprocessor or the like.
- the evaluation and processing of the data is therefore computer-aided.
- the measurement signals or heat radiation data also contain the information required to be able to assign the detected heat radiation 9 or corresponding temperatures to the respective reaction chambers 3 and thus to the respective reaction mixtures 4.
- the measurement signals or heat radiation data provided by the sensor device 8 or camera 10 can, if necessary, be temporarily stored and only evaluated later.
- a continuous evaluation is preferably carried out, in particular also the time course of the heat radiation or temperature of the individual reaction mixtures 4 - ie the respective exothermic reaction course, as exemplified in FIG. 2 for three different reaction processes - is recorded.
- the reaction processes are, for example, continuously saved, printed out and / or displayed or output to devices (not shown) for further processing, for example via an interface (not shown).
- the temperature or a value proportional to the respectively monitored reaction mixture 4 is recorded during the evaluation.
- the conversion of the thermal radiation 9 detected by the sensor device 8 or camera 10 - in particular these are intensity values - can optionally already take place in the sensor device 8 or in the subsequent evaluation. In particular, a corresponding calibration is possible or is provided.
- the conversion can be carried out, for example, by means of corresponding conversion parameters, value tables, interpolation or the like.
- the system 1 has in particular a time base 12 or the like.
- a time base 12 the internal clock of a computer or other device that carries out the evaluation and in particular forms the evaluation device 11 can also be used if necessary.
- the reaction device 2 is preferably designed as a microtiter plate.
- the reaction device 2 has reaction chambers 3 designed as recesses 13 - also referred to as “wells”, which are each separated from one another by webs 14 or the like.
- the reaction chambers 3 are preferably designed to be open at the top. If necessary, however, the reaction chambers 3 can also be closed, in particular by one illustrated, heat radiation 9 permeable cover or the like can be closed.
- the system 1 according to the invention is shown only schematically in FIG. 1.
- the reaction components 6, 7 can be fed to the metering device 5, for example, via lines or channels 15, 16.
- the metering device 5 can be of single or multi-channel design, for example the same reaction component 6 or 7 being able to be fed to a plurality of reaction chambers 3 at the same time and / or at least 2 different reaction components 6, 7 being able to be fed to at least one reaction chamber 3 at the same time.
- the system 1 preferably has a mixing device 17 assigned to the reaction device 2.
- the mixing device 17 can, for example, cause the reaction device 2 or its reaction chambers 3 to be shaken or shaken and / or ultrasound to act - for example by means of an ultrasound transducer (not shown) or the like.
- the mixing device 17 can also have at least one agitator 18, preferably a plurality of agitators 18, each associated with a reaction chamber 3.
- the agitators 18 - if provided - can be driven by an electric drive 19 or the like.
- the mixing device 17 brings about a thorough mixing of the reaction mixtures 4 located in the reaction chambers 3 or their reaction components 6, 7.
- the system 1 preferably has a heating device 20 assigned to the reaction device 2, for example in the form of a heating plate, a heating shock or an infrared radiator.
- the heating device 20 serves for any desired heating or tempering of the reaction mixtures 4 located in the reaction chambers 3.
- the system 1 preferably has a control device 21, which in particular has an automated sequence, that is to say in particular a automated screening of a large number of reaction mixtures 4 and their thermal monitoring, enables.
- the control device 21 serves to control the metering device 5, the evaluation device 11 with the associated sensor device 8 or camera 10, the mixing device 17 and / or the heating device 20, as indicated by the dashed lines.
- the evaluation device 11 and the time base 12 are integrated in the control device 21. However, this is not absolutely necessary. Rather, the evaluation device 11 can also be formed, for example, by a separate computer or the like.
- the components or components of the proposed system 1 described above preferably form a device.
- it can also be at least partially separate or independent devices.
- a display device 22 is preferably assigned to the system 1 in order to display the thermal profiles of the reactions.
- This display device 22 - in particular a screen or the like - is connected, for example, directly to the evaluation device 11 or to the control device 21.
- the evaluation can also be switched to different modes if necessary. For example, it is possible to switch between continuously monitoring the thermal course of reactions and a warning function or identification function when a predeterminable temperature is exceeded.
- the recorded thermal processes are preferably continuously displayed on the display device 22, for example in the form of a diagram corresponding to FIG. 2.
- Monomers e.g. Methacrylates, initiators such as hydroperoxides, accelerators such as sulfonylamides and reducing agents such as tertiary amines.
- These reactive components 6, 7 are optionally supplied in part in dilute form by means of a metering system 5 which fills the wells 3 of a 96-well microtiter plate.
- a multichannel pipetting system (Hamilton MicroLab SD) is used as dosing system 5, which is characterized by the parallel handling of different liquids. In this way, substances can be transferred from a number of source vessels to a number of target vessels.
- the filling of the individual wells of the microtiter plate with the microns of the educts or the composition of the individual formulations is controlled by a software program and takes place in the high-scan thermal array according to the invention.
- the formulations are homogenized using a Thermomixer (Thermomixer comfort from Eppendorf).
- Thermomixer comfort from Eppendorf.
- the exothermic polymerization process is then started by metered addition of 1 to 10 ⁇ l of a metal salt solution. It is It is important that all 96 wells are filled within a maximum of five seconds. After renewed homogenization, the exothermic process begins, which is recorded by IR thermography for each well and visualized on a monitor.
- FIG. 2 illustrates the thermographic course of three selected reaction samples.
- 2 shows an example of a diagram of various reaction sequences.
- Curve 23 corresponds, for example, to a rapidly curing adhesive, curve 24 to a moderately rapidly curing adhesive and curve 25 to a slowly curing adhesive. Accordingly, different temperature maxima and different curve profiles result at different times.
- curves 23, 24 and 25 correlate with different reaction mixtures 4 in different reaction chambers 3.
- thermal process of the editorial staff can be called up individually for each reaction mixture 4, if necessary, or several or all processes can be displayed one above the other or next to one another, with one another or in any other way combined.
- another form of representation for example in the form of number tables, or a further evaluation, for example by reduction to temperature maxima and time, is possible.
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- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10052511 | 2000-10-23 | ||
| DE10052511A DE10052511B4 (de) | 2000-10-23 | 2000-10-23 | System zur Überwachung chemischer Reaktionsabläufe und seine Verwendung |
| PCT/EP2001/011855 WO2002035218A2 (de) | 2000-10-23 | 2001-10-13 | Verfahren und vorrichtung zur evaluierung chemischer reaktionsabläufe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1332345A2 true EP1332345A2 (de) | 2003-08-06 |
Family
ID=7660757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01988859A Withdrawn EP1332345A2 (de) | 2000-10-23 | 2001-10-13 | Verfahren und vorrichtung zur evaluierung chemischer reaktionsabläufe |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20040106201A1 (de) |
| EP (1) | EP1332345A2 (de) |
| AU (1) | AU2002221672A1 (de) |
| DE (1) | DE10052511B4 (de) |
| WO (1) | WO2002035218A2 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050095714A1 (en) * | 2003-10-31 | 2005-05-05 | Wollenberg Robert H. | High throughput preparation of lubricating oil compositions for combinatorial libraries |
| DE102004017039A1 (de) * | 2004-04-02 | 2005-11-03 | Rwth Aachen | Verfahren und Vorrichtung zur Erfassung von Prozessparametern von Reaktionsflüssigkeiten in mehreren geschüttelten Mikroreaktoren |
| EP1842587A1 (de) * | 2006-04-03 | 2007-10-10 | Sika Technology AG | Verwendung der Infrarot-Thermographie als Mittel zur Bestimmung des Aushärtungsverlaufes einer zweikomponentigen Zusammensetzung |
| NL2002055C (en) * | 2008-10-03 | 2010-04-06 | Enzyscreen B V | An apparatus and a method for investigation of microtiter plates subjected to orbital shaking. |
| DE102012105101B3 (de) * | 2012-06-13 | 2013-07-04 | Netzsch-Gerätebau GmbH | Thermoanalysevorrichtung |
| DE102016116377A1 (de) * | 2016-09-01 | 2018-03-01 | Rheinisch-Westfälisch Technische Hochschule (RWTH) Aachen | Verfahren und Vorrichtung zur Erfassung von Prozessparametern in Flüssigkulturen |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3641593A1 (de) * | 1985-12-06 | 1987-06-11 | Fuji Photo Film Co Ltd | Doppelpipettenvorrichtung |
| US6030917A (en) * | 1996-07-23 | 2000-02-29 | Symyx Technologies, Inc. | Combinatorial synthesis and analysis of organometallic compounds and catalysts |
| US6063633A (en) * | 1996-02-28 | 2000-05-16 | The University Of Houston | Catalyst testing process and apparatus |
| EP1669738A3 (de) * | 1996-10-09 | 2007-12-12 | Symyx Technologies, Inc. | Infrarotspektroskopie und Abbildung von Bibliotheken |
| DE19826303A1 (de) * | 1998-06-12 | 1999-12-16 | Studiengesellschaft Kohle Mbh | Verfahren zur kombinatorischen Materialentwicklung durch den Einsatz von Wärmedifferenzbildern |
| US6306658B1 (en) * | 1998-08-13 | 2001-10-23 | Symyx Technologies | Parallel reactor with internal sensing |
-
2000
- 2000-10-23 DE DE10052511A patent/DE10052511B4/de not_active Expired - Fee Related
-
2001
- 2001-10-13 EP EP01988859A patent/EP1332345A2/de not_active Withdrawn
- 2001-10-13 US US10/399,831 patent/US20040106201A1/en not_active Abandoned
- 2001-10-13 WO PCT/EP2001/011855 patent/WO2002035218A2/de not_active Ceased
- 2001-10-13 AU AU2002221672A patent/AU2002221672A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0235218A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20040106201A1 (en) | 2004-06-03 |
| AU2002221672A1 (en) | 2002-05-06 |
| DE10052511A1 (de) | 2002-05-02 |
| WO2002035218A3 (de) | 2002-08-15 |
| DE10052511B4 (de) | 2005-12-29 |
| WO2002035218A2 (de) | 2002-05-02 |
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