Quick high-selectivity fluorine ion colorimetric probe and preparation method thereof
Technical field
The present invention relates to as fluorine ion colorimetric probe, its preparation method and its quick high-selectivity identification to fluorine ion
Application.
Background technology
In environmental and biological materials, anion is ubiquitous, and it is present in empty gas and water and soil in environment,
It is present in organ, the cell of human body, even in cell liquid, it plays extremely important angle in environment and the ecosystem
Color.And be the indispensable element of biological life activity as fluorine ion minimum in anion, dredged in teeth caring and treatment sclerotin
The aspect important role such as loose disease.In order to contain enough fluorine ions in human body, people are using it as a kind of important
Additive, is usually used in toothpaste, medicine and drinking water.However, the fluorine of excess is not only to aquatile and the toxic effect of plant,
Will also result in serious human health problems.The sodium fluoride (NaF) of such as higher concentration can disturb normal cell metabolism.It is anxious
Property intake is heavy dose of or fluorine of long-term intake low dosage, acute stomach trouble and kidney disorder, tooth and bone can be caused chronic
Poisoning, lithiasis, serious even can cause death.At present, the whole world still has many people drinking the water containing fluorine high
Source, this health to the mankind generates threat.
In consideration of it, research is a kind of can to detect that fluorine ion has the method with content, no matter treatment, guarantor in clinical disease
Retaining ring border or academic research aspect suffer from extremely important effect.Have much although detecting the method for fluorine ion, it is unfortunate
Be that capillary electrophoresis sensitivity is low, the poor reproducibility of fluoride ion selective electrode, the high cost of fluorine ion nuclear magnetic resonance, sternly
Its application is limited again and is developed.It is with low cost because colorimetric probe is simple to operate, it might even be possible to by the conversion of molecular recognition signal
Into the change of color, it is not necessary to expensive instrument directly can with naked eye, therefore, colorimetric probe is compared with other recognition methods
With significant advantage.
The content of the invention
It is badly in need of one kind and prepares simple quick high-selectivity fluorine ion colorimetric probe in this area such that it is able to effective detection fluorine
Ion.Therefore, the present invention has synthesized the novel fluorine ion colorimetric probe of a class, its synthesis is simple, stability is high, and/or selection
Property is high, and/or can quickly recognize fluorine ion.
Specifically, the invention provides a kind of fluorine ion colorimetric probe, it is 4- tert-butyl diphenyl siloxy benzene second
Vinyl compound.
Present invention also offers the preparation method of fluorine ion colorimetric probe, it is by by corresponding 4- tert-butyl diphenyls
Siloxy compound of benzaldehyde category is obtained with the reaction of 2- cyanobenzothiazole classes compound.
In the preparation method of fluorine ion colorimetric probe of the invention, reaction temperature is 20~100 DEG C;Reaction time is 2h
~10h;4- tert-butyl diphenyl siloxy compound of benzaldehyde category is for about with the mol ratio of 2- cyanobenzothiazole class compounds
1:1 to 5:1.
Fluorine ion colorimetric probe of the invention can be acted on fluorine ion, produce the change of absorption spectrum (while adjoint
Different color changes), so as to realize the quantitative determination to fluorine ion.
Specifically, fluorine ion colorimetric probe of the invention is acted on other anion can not cause absorption respectively
The obvious change of spectrum, so as to realize the Selective recognition to fluorine ion, and then can be optionally used for excluding other anion
In the presence of the interference of the quantitative determination to fluorine ion.
Selectively, the good stability of fluorine ion colorimetric probe of the invention, and then can for a long time preserve and use.
Further, fluorine ion colorimetric probe of the invention is quick high-selectivity fluorine ion colorimetric probe, and synthesis letter
It is single, be conducive to commercialized popularization and application.
Brief description of the drawings
Fig. 1 (Fig. 1 a and Fig. 1 b) is influences of the various concentrations NaF (0~200 μM) to probe (10 μM) absorption spectrum.
Fig. 2 is influence of the different analytes (100 μM) to probe (10 μM) absorption spectrum.
Fig. 3 is influence of the different analytes (100 μM) to probe (10 μM) absorption spectrum quantitative analysis NaF (100 μM).
Fig. 4 is probe (10 μM) to 100 μM of test results of concentration NaF response times.
Specific embodiment:
The present invention proposes synthetic route, method and its light spectrality of above-mentioned quick high-selectivity fluorine ion colorimetric probe
Energy.
Fluorine ion colorimetric probe of the invention is a class 4- tert-butyl diphenyl siloxy styrene compounds, and it has
Following general structure
The synthetic route and method of above-mentioned fluorine ion colorimetric probe are as follows:
Quick high-selectivity identification fluorine ion colorimetric probe of the invention is noteworthy characterized by being capable of quick high-selectivity ground
Identification fluorine ion, and/or quantitative analysis accurately can be carried out to fluorine ion in the presence of other high concentration anionics.Important
It is that the mode that fluorine ion colorimetric probe of the invention can also be observed with " bore hole " carries out qualitative and quantitative analysis.
The present invention will be illustrated in greater detail by by following examples below.Following examples are merely illustrative,
It should be understood that the present invention is not limited by following embodiments.
Embodiment 1
(scheme 1) is by 174mg (1.0mmol) 2- cyanobenzothiazoles, 361mg (1.0mmol) 4- tert-butyl diphenyl silicon
Epoxide benzaldehyde and 50 μ L triethylamines are dissolved in 20mL ethanol, and at 25 DEG C after stirring reaction 8h, filtration under diminished pressure obtains crude product, so
Dichloromethane and mixed system (v/v, 1 of petroleum ether are used afterwards:1) pillar layer separation is carried out, faint yellow pure product is obtained
310mg, yield is 60 ﹪.
(scheme 2) is by 174mg (1.0mmol) 2- cyanobenzothiazoles, 542mg (1.5mmol) 4- tert-butyl diphenyl silicon
Epoxide benzaldehyde and 50 μ L triethylamines are dissolved in 20mL ethanol, and at 25 DEG C after stirring reaction 8h, filtration under diminished pressure obtains crude product, so
Dichloromethane and mixed system (v/v, 1 of petroleum ether are used afterwards:1) pillar layer separation is carried out, faint yellow pure product is obtained
372mg, yield is 72 ﹪.
1H-NMR(400MHz,CDCl3)δ(*10-6):1.04 (s, 9H), 6.77 (d, J=8.0Hz, 2H), 7.29-7.41
(m, 8H), 7.63 (d, J=8.0Hz, 4H), 7.72-7.77 (m, 3H), 7.94 (d, J=8.0Hz, 1H), 7.98 (s, 1H);13C-
NMR(100MHz,CDCl3)δ(*10-6):18.51,25.44,101.43,116.01,119.70,120.61,122.36,
124.58,124.73,125.83,126.76,127.05,129.33,130.97,131.54,133.78,134.43,145.57,
152.62,158.56,162.43.ESI-MS calculated value C32H29N2OSSi[M+H]+517;Measured value 517.
Embodiment 2
The present inventor has carried out following test:A () various concentrations NaF (0~200 μM) is to (10 μM) absorptions of probe
The influence of spectrum;Absorption intensity and NaF concentration (0,1,2,4,6,8,10,15,20,30,40,60 μ for adding at (b) 485nm
M the linear relationship between).Said determination is carried out in acetonitrile, and all spectrum tests are all that NaF adds work at 25 DEG C
With what is measured after 20min.Result is referring to Fig. 1.
It will be seen from figure 1 that along with the increase of NaF concentration in probe solution, absorption spectrum gradually rises, and 0~
The linear relationship into good with absorption value in 60 μM of NaF concentration ranges.Therefore, probe of the invention can relatively accurately determine to treat
Survey the content of fluorine ion in blood sample or environment.
Embodiment 3
Influence of the different analytes (100 μM) to probe (10 μM) absorption spectrum.Analyte includes:Chlorion Cl-, bromine from
Sub- Br-, iodide ion I-, sulfate ion SO4 2-, nitrate ion NO3 -, nitrite ion NO2 -, thiocyanate ion SCN-
With fluorine ion F-, their concentration is 100 μM.All test conditions are completed in acetonitrile, and all spectrum are all 25
Measured after analyte addition effect 20min at DEG C.The probe storing solution (1mM) for pipetting 50 μ L puts 5mL colorimetric cylinders into, then
3mL acetonitriles are added, then pipettes the above-mentioned analyte storing solutions (10mM) of 50 μ L and added in colorimetric cylinder, be then settled to 5mL with acetonitrile.
Shake up, stand 20min, you can determine.Result is as shown in Figure 2.
Figure it is seen that probe has selectivity very high to fluorine ion, can be carried out instead with fluorine ion in specific manner
Should.In acetonitrile solution, compared with other analytes, so after probe reacts with fluorine ion, absorption spectrum is increased significantly;And
After other Common Anions existed in organism are acted on probe there is no significant change in absorption intensity.
Embodiment 4
Influence of the different analytes (100 μM) to probe (10 μM) absorption spectrum quantitative analysis fluorine ion (100 μM).Point
Analysis thing includes:Chlorion Cl-, bromide ion Br-, iodide ion I-, sulfate ion SO4 2-, nitrate ion NO3 -, nitrite anions from
Sub- NO2 -, thiocyanate ion SCN-With fluorine ion F-, their concentration is 100 μM.All test conditions are complete in acetonitrile
Into, and all spectrum measure all at 25 DEG C after analyte addition effect 20min.Result is as shown in Figure 3.
From figure 3, it can be seen that other Common Anions existed in organism will not significantly interfere with probe to fluorine ion
Qualitative and quantitative is detected.
Embodiment 5
Probe (10 μM) is to 100 μM of test results of concentration NaF response times.First, the probe storing solution of 50 μ L is pipetted
(1mM) is put into 5mL colorimetric cylinders, and the acetonitrile of 4.5mL is added to it, then pipettes the NaF storing solutions (10mM) of 50 μ L, finally uses second
Nitrile is settled to 5mL, quickly shakes up, and timing is determined.Result is as shown in Figure 4.
Figure 4, it is seen that after NaF adds probe solution to react, its absorption intensity is that significant change, 20 points occur
Absorption intensity tends towards stability after clock.This elevated rapidity of absorption intensity illustrates that this probe can be completely used for fluorine with explicitly
The instant detection of ion.