Preparation method and application of trifluoromethanesulfonyl-terminated bis (diphenylacetylene) fluorescent liquid crystal composite material with adjustable triple thermoluminescence discoloration performance

The invention belongs to the technical field of fluorescent liquid crystal materials, and particularly discloses a preparation method and application of a trifluoromethanesulfonyl-terminated bis (diphenylacetylene) fluorescent liquid crystal composite material with an adjustable and controllable triple thermoluminescence discoloration performance, and a bis (diphenylacetylene) fluorescent liquid crystal compound based on tail end-SO2CF3 modification is used as a luminous source. The fluorescent liquid crystal compound is simple to synthesize and novel in structure, and has good liquid crystal performance, fluorescence performance and thermal stability by changing a terminal electron-donating group and a fluorine-substituted benzene ring to adjust the emission wavelength and the luminous intensity; reversible fluorescence switching at different temperatures can be realized by selecting load matrixes with different melting points, and particularly, in a liquid crystal state temperature range of a liquid crystal