首页|Benzo[1,2-b:4,3-b']dithiophene-pyridine isomers:Synthesis,self-assembly,photophysical and acidochromic properties
Benzo[1,2-b:4,3-b']dithiophene-pyridine isomers:Synthesis,self-assembly,photophysical and acidochromic properties
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NSTL
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.
Key Laboratory of Medicinal Chemistry for Natural Resources,Ministry of Education,School of Chemical Science and Technology,Yunnan University,Kunming,Yunnan,650091,PR China
NSTL
