Dinitriles Bearing AIE-Active Moieties: Synthesis, E/Z Isomerization, and Fluorescence Properties

作者：Tasso Thiago Teixeira; Furuyama Taniyuki; Kobayashi Nagao^*

来源：Chemistry - A European Journal, 2015, 21(12): 4817-4824.

DOI：10.1002/chem.201406128

• aggregation
• cyanides
• dyes
• pigments
• fluorescence
• solvatochromism

Dinitriles bearing aggregation-induced emission (AIE)-active moieties [tetraphenylethylene (TPE) or diphenylphenanthrene (DPP)] were prepared. Compounds 4 (TPE-linked) and 8 (DPP-linked) showed considerably redshifted emission resulting from their large Stokes shifts and also strong fluorescence in the aggregated and solid states. Pure E and Z stereoisomers of both dinitriles were easily separated, and their isomerization equilibria and fluorescence properties were investigated. In addition to their pronounced AIEE behavior, 4 and 8 also showed various reversible chromic responses to external stimuli, namely, solvato-, piezo-, vapo-, and thermochromism, which make them potential candidates for smart materials.

• 出版日期2015-3-16