1306201-17-1Relevant articles and documents
Luminescent columnar liquid crystals based on AIE tetraphenylethylene with hydrazone groups bearing multiple alkyl chains
Jiang, Shengjie,Qiu, Jiabin,Chen, Yunxiang,Guo, Hongyu,Yang, Fafu
, p. 533 - 541 (2018)
A series of novel tetraphenylethylene aromatic acylhydrazone derivatives 11, 12 and 13 with 4, 8 or 12 alkyl chains were designed and synthesized in yields of 82–85%. Studies on the mesomorphic properties suggested the ordered hexagonal columnar mesophase
Circularly polarized luminescence based on columnar self-assembly of tetraphenylethylene with multiple cholesterol units
Jiang, Shengjie,Qiu, Jiabin,Lin, Liangbin,Guo, Hongyu,Yang, Fafu
, p. 363 - 370 (2019/01/03)
The influence of different states of AIE derivative with columnar liquid crystalline phase on circularly polarized luminescence (CPL) was investigated in this work. Two novel tetraphenylethylene derivatives with multiple cholesterol units (TPE-C and TPE-SC) were prepared. They exhibited enantiotropic liquid crystalline behaviours with the ordered hexagonal columnar mesophase. They possessed excellent AIE properties in H2O-THF system. The fluorescence quantum yields of TPE-C and TPE-SC at solid state were as high as 28.8% and 22.6%, respectively. The chiral transfer from cholesterol units to TPE cores was confirmed by CD spectra. The studies on CPL spectra suggested that their CPL behaviors were tuned by the different states. They showed weak CPL properties at solid and isotropic state but strong CPL luminescence at liquid crystalline phase based on the orderly columnar self-assembly. The glum of TPE-SC at liquid crystalline phase reached 8.83 × 10?2.
