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Application of a sensor molecule based on functionalized pillar[5]arene for the detection of formaldehyde
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A sensor and functionalized technology, applied in material analysis by observing the effect of chemical indicators, analysis by chemical reaction of materials, instruments, etc., can solve the problem of formaldehyde molecular detection limitations and other issues
Inactive Publication Date: 2021-01-19
NORTHWEST NORMAL UNIVERSITY
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However, in real life, various formaldehyde molecules that are beneficial or harmful to the human body mostly exist in the water phase or gas, and most of the reported methods that can detect formaldehyde are carried out in solution, and the detection of formaldehyde molecules is also difficult. Relatively limited
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Embodiment 1
[0032]In the DMF solution of sensor TPEJ, add benzaldehyde, salicylaldehyde, p-fluorobenzaldehyde, m-bromobenzaldehyde, p-chlorobenzaldehyde, p-bromobenzaldehyde, n-decylaldehyde, p-tolualdehyde, m-tolualdehyde, For aqueous solutions of o-chlorobenzonitrile, o-tolualdehyde, m-chlorobenzaldehyde, o-bromobenzaldehyde, m-fluorobenzaldehyde, o-chlorobenzaldehyde, glutaraldehyde, and formaldehyde, if the fluorescence of the sensor solution is significantly enhanced and emits blue fluorescence, It means that what is added is formaldehyde solution; otherwise what is added is not formaldehyde solution.
Embodiment 2
[0034] In the DMF solution of sensor TPEJ, add TPEJ mass 1% (CF 3 SO 3 ) 2 Bi, after mixing evenly, add benzaldehyde, salicylaldehyde, p-fluorobenzaldehyde, m-bromobenzaldehyde, p-chlorobenzaldehyde, p-bromobenzaldehyde, n-decyl aldehyde, p-tolualdehyde, m-tolualdehyde, ortho-chlorobenzaldehyde respectively For aqueous solutions of benzonitrile, o-tolualdehyde, m-chlorobenzaldehyde, o-bromobenzaldehyde, m-fluorobenzaldehyde, o-chlorobenzaldehyde, glutaraldehyde, and formaldehyde, if the fluorescence of the sensor solution is significantly enhanced and emits blue fluorescence, it means What is added is formaldehyde solution; otherwise what is added is not formaldehyde solution.
Embodiment 3
[0036] (1) Preparation of formaldehyde detection test paper: pipette 20mL of DMF solution of sensor TPEJ (1×10 -2 M), join (CF 3 SO 3 ) 2 Bi (content 1%), after stirring evenly, put the silica gel plate on TPEJ+(CF 3 SO 3 ) 2 Completely soak in the Bi solution, take it out and dry it;
[0037] (2) Detection of formaldehyde solution: place the formaldehyde detection test paper in various aldehyde solutions (including benzaldehyde, salicylaldehyde, p-fluorobenzaldehyde, m-bromobenzaldehyde, p-chlorobenzaldehyde, p-bromobenzaldehyde, n-decyl aldehyde, p-tolualdehyde, m-tolualdehyde, o-chlorobenzonitrile, o-tolualdehyde, m-chlorobenzaldehyde, o-bromobenzaldehyde, m-fluorobenzaldehyde, o-chlorobenzaldehyde, glutaraldehyde, etc.), and then in Under the irradiation of 365nm ultraviolet light, observe the fluorescence change of the test paper. If the fluorescence of the test paper is obviously enhanced, it means that the solution is a formaldehyde solution;
[0038] (3) Detec...
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Abstract
The invention discloses application of sensor molecules based on functionalized column [5] aromatic hydrocarbon in detecting formaldehyde. Various aldehyde solutions are separately added into a DMF solution of sensor molecules TPEJ, which is discovered that only when the formaldehyde solution is added, the fluorescence of the sensor TPEJ is enhanced, and the fluorescence of the fluorescent sensormolecules emitting blue light is enhanced, therefore, the sensor TPEJ has single selective fluorescent response property for the formaldehyde, and is used for fluorescent identification of the formaldehyde solution, and the lowest detection limit is 3.27*10<-9> M. The research also discovers that after one percent BDPAT is added into the sensor molecules TPEJ, the response to the fluorescence of the formaldehyde is more apparent, and the response time is shorter; and moreover, by adding the (CF3SO3)2Bi, the response to the fluorescence of the formaldehyde is the most apparent, and the responsetime is the shortest and is only 8 seconds.
Description
technical field [0001] The present invention relates to the application of a sensor molecule based on pillar [5] aromatic hydrocarbons in detecting formaldehyde gas and solution, and also relates to the presetting of the sensor molecule (CF 3 SO 3 ) 2 The compound sensor molecule of Bi relates to the detection application of formaldehyde gas and solution, and belongs to the technical field of molecular detection. Background technique [0002] Ions and molecules play an important role in the fields of chemistry, biology, environment, etc., and are crucial for the detection of some special ions or molecules in the environment. Formaldehyde is a colorless gas with a strong pungent odor. Soluble in water, alcohol and ether. Formaldehyde is gaseous at room temperature and usually appears in the form of aqueous solution. 35~40% formaldehyde solution is called formalin. There is aldehyde group polycondensation reaction in the formaldehyde molecule, and phenolic resin (bakelit...
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