Open AccessAIE-active positional isomers based on tetraphenylethylene attaching o-/m-/p-formylphenyl groups for reversible mechanochromism
Author(s) -
Shan Shan-Ni,
Lixian Jiang,
Jie Li,
YiHeng Li,
Yan Zeng,
Jinliang Wang,
Guiqin Lv
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/358/5/052055
Subject(s) - tetraphenylethylene , intramolecular force , chemistry , aggregation induced emission , structural isomer , photochemistry , stereochemistry , fluorescence , physics , quantum mechanics
Three AIE-active positional isomers, TPE-4(Ph- o -CHO), TPE-4(Ph- m -CHO) and TPE-4(Ph- p -CHO) , which are tetraphenylethylene ( TPE ) derivates peripherally attaching ortho-/meta-/para-formyl phenyl groups, were designed and synthesized. The formyl substitution position caused different intramolecular charge transfer (ICT) of the isomers, which can effectively modulate their photophysical properties and mechanochromism. TPE-4(Ph- o -CHO), TPE-4(Ph- m -CHO) and TPE-4(Ph- p -CHO) exhibited remarkable aggregation-induced emission (AIE) characteristics. Moreover, TPE-4(Ph- o -CHO), TPE-4(Ph- m -CHO) and TPE-4(Ph- p -CHO) possessed mechanochromic property, which displayed distinguished color changes. Thus, three isomers are potential to be applied in mechano-response sensors or optical storage materials.