Benzo[1,2-b:4,3-b']dithiophene-pyridine isomers: Synthesis, self-assembly, photophysical and acidochromic properties

被引:1
|
作者
Chang, Qing [1 ]
Ma, Tao [1 ]
Liu, Chao [1 ]
Hu, Jinliang [1 ]
Cheng, Xiaohong [1 ]
机构
[1] Yunnan Univ, Sch Chem Sci & Technol, Key Lab Med Chem Nat Resources, Minist Educ, Kunming 650091, Yunnan, Peoples R China
基金
中国国家自然科学基金;
关键词
Self-assembly; Liquid crystal; Organogel; WLED; Acid-base vapors sensor; Information storage; CIRCULARLY-POLARIZED LUMINESCENCE; SUPRAMOLECULAR CHIRALITY; INVERSION; PHOSPHORS; SI;
D O I
10.1016/j.dyepig.2022.110490
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Two benzo[1,2-b:4,3-b']dithiophene-pyridine-based bent shaped isomers (3BDTPy12 and 4BDTPy12) have been synthesized via Suzuki coupling reactions as key steps. They differ themselves in the position of N-atom on the pyridine unit which has generated significant effect on their self-assembly behavior and photophysical properties. 4BDTPy12 with N in the para position in the pyridine ring can self-assemble into a columnar liquid crystalline phase while its isomer 3BDTPy12 with N in the meta position in the pyridine ring is only a crystal. Both compounds can form gels in different organic solvents but with different morphologies. The influence of the solvent polarities and doping agents including chiral L-phenylalanine (L-Phe), trifluoroacetic acid as well as L tartaric acid on their gel morphologies were also studied. The gel of 4BDTPy12 doped with L-tartaric acid could produce enhanced yellow emission which can be used to generate WLED, and such compounds can be used as chemosensors towards volatile acid-base vapors with good reversibility.
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页数:8
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