Method for detecting concentration of trifluoroacetic acid with polymer in acidichromism performance

Abstract

Acidichromism is a color changing form which grows fast in recent years. Although more studies on acidichromism performance of polymers appear, and the relation between the acidichromism performance and solvent and the relation between the acidichromism performance and acid strength are reported, the relation between the acidichromism and a polymer structure are not reported yet. Therefore, according to the invention, a novel conjugated polymer is successfully compounded through Suzuki reaction by taking a pyrimidine monomer of a 2-amidogen substituent as a copolymer electron-deficiency group and taking a benzene ring as an electron-rich group, the polymer is subjected to structural characterization and performance study, the impact of a pyrimidine unit substituent on the acidichromism performance of pyrimidine and benzene alternating copolymers is discussed, further, the impact of an alternating unit (a benzene unit) on the acidichromism performance of pyrimidine copolymers is emphatically discussed, and therefore, the invention provides a novel polymer in the acidichromism performance and determines the acidichromism scope and the lowest responsive acid concentration, and the structure formula of the acid-doped representative polymer is shown in a diagram of the abstract.

Description

technical field [0001] The invention relates to a method for detecting the concentration of trifluoroacetic acid by a polymer with acid-induced color change performance, belongs to the technical fields of information storage, electrode materials, novel acid-base sensitive sensing materials and the like, and has potential application prospects. Background technique [0002] Acid-induced discoloration is a form of discoloration that has developed rapidly in recent years. It refers to reversible color changes caused by different pH values ​​or exposure to acidic or alkaline gases. Materials with acid-induced discoloration properties are called acid-induced discoloration. Color-changing materials, polymers with their properties provide reference for applications in fields such as pH or sensors. In 2008, Jeong-HoKim and JaeYunJaung studied the acid-induced discoloration properties of porphyrin-quinophyllin derivatives and found that the continuous addition of trifluoroacetic acid...

AI Technical Summary

Problems solved by technology

In addition, the design of polymers with electron-deficient aromatic rings in the main chain and reductive doping properties has great application prospects in polymer battery electrode materials, electrochemical capacitors, etc. Among electron-deficient compounds, 2-aminopyrimidine It is a typical electron-deficient aromatic heterocyclic compound, which has a wide range of physiological activities and has certain applications in the fields of organic light-emitting, photovoltaic cells, etc. Although the research on polymers containing pyrimidine rings has not been interrupted, the pyrimidine unit and benzene The study of conjugated polymers composed of units is still rarely reported, and as an electrode material is one of the main applications of pyrimidine-containing heterocyclic conjugated polymers. In developed countries, the application research of all-polymer materials as batteries has achieved certain results. Progress, polymers composed of electron-deficient groups can be n-type doped, and can be used as anode materials for polymer batteries. The electrolyte of n-type batteries is small and easy to be refined. Electron-deficient aromatic rings and electron-rich aromatic rings The composed charge-moving conjugated polymer has p-type and n-type doping properties at the same time, and functional polymers with different characteristics can be designed by selectively changing each polymer unit

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