Jing Huang, Ning Sun, Yongqiang Dong
May 13, 2013
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Influential Citations
244
Citations
Quality indicators
Journal
Advanced Functional Materials
Abstract
Four 4,4′‐bis(1,2,2‐triphenylvinyl)biphenyl (BTPE) derivatives, 4,4′‐bis(1,2,2‐triphenylvinyl)biphenyl, 2,3′‐bis(1,2,2‐triphenylvinyl)biphenyl, 2,4′‐bis(1,2,2‐triphenylvinyl)biphenyl, 3,3′‐bis(1,2,2‐triphenylvinyl)biphenyl and 3,4′‐bis(1,2,2‐triphenylvinyl)biphenyl (oTPE‐mTPE, oTPE‐pTPE, mTPE‐mTPE, and mTPE‐pTPE, respectively), are successfully synthesized and their thermal, optical, and electronic properties fully investigated. By merging two simple tetraphenylethene (TPE) units together through different linking positions, the π‐conjugation length is effectively controlled to ensure the deep‐blue emission. Because of the minor but intelligent structural modification, all the four fluorophores exhibit deep‐blue emissions from 435 to 459 nm with Commission Internationale de l'Eclairage (CIE) chromaticity coordinates of, respectively, (0.16, 0.14), (0.15, 0.11), (0.16, 0.14), and (0.16, 0.16), when fabricated as emitters in organic light‐emitting diodes (OLEDs). This is completely different from BTPE with sky‐blue emission (0.20, 0.36). Thus, these results may provide a novel and versatile approach for the design of deep‐blue aggregation‐induced emission (AIE) luminogens.