The isomeric effect on the D-π-π-A prototype fluorescent material: synthesis, photophysical property, and computation.

Autor: Wu, Dong-En, Guo, Qing-Hui, Qiao, Qiwei, Cai, Yu-Jie, Zhou, Qing-Qing
Zdroj: Chemical Monthly / Monatshefte für Chemie; Nov2021, Vol. 152 Issue 11, p1315-1326, 12p
Abstrakt: Two novel organic fluorescent isomers with D-π-π-A prototype structure, namely, (E)-2-[3-([1,1'-biphenyl]-4-yl)-1-(6-methoxynaphthalen-2-yl)allylidene]malononitrile and (E)-2-[1-([1,1'-biphenyl]-4-yl)-3-(6-methoxynaphthalen-2-yl)allylidene]malononitrile, were synthesized. Due to the exchange of naphthalene and biphenyl moieties on each side of conjugated bridge (C = C(CN)2)-conjugated bridge (C = C) group, two compounds are organic fluorescent isomers, and display different molecular stacking mode and photophysical property. Molecules of (E)-2-[3-([1,1'-biphenyl]-4-yl)-1-(6-methoxynaphthalen-2-yl)allylidene]malononitrile are packed with H-aggregation, while (E)-2-[1-([1,1'-biphenyl]-4-yl)-3-(6-methoxynaphthalen-2-yl)allylidene]malononitrile has a J-aggregation. Both of two compounds show solvatochromism and tunable aggregation-induced enhanced emission property. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz: