Advantages of Mobile Liquid-Crystal Phase of AIE Luminogens for Effective Solid-State Emission

We investigate aggregation-induced emission (AIE) characters of bulk tetraphenylethene (TPE) derivatives with nonpolar and polar exterior chains. The bulk TPE derivatives with nonpolar dodecyl and polar di­(ethylene oxide) chains are in liquid crystal (LC) and crystalline phases, respectively, at ro...

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Bibliographic Details
Published in:Journal of physical chemistry. C 2016-12, Vol.120 (47), p.26695-26702
Main Authors: Bui, Hoa Thi, Kim, Jinhee, Kim, Ho-Joong, Cho, Byoung-Ki, Cho, Sung
Format: Article
Language:English
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Summary:We investigate aggregation-induced emission (AIE) characters of bulk tetraphenylethene (TPE) derivatives with nonpolar and polar exterior chains. The bulk TPE derivatives with nonpolar dodecyl and polar di­(ethylene oxide) chains are in liquid crystal (LC) and crystalline phases, respectively, at room temperature. The mobile LC character of the TPE derivatives in bulk is crucial for high AIE efficiency because the mobile LC character is effective in minimizing the number of undesirable nonemissive local sites in aggregates and inducing a homogeneous zigzag-stacked columnar structure with j-type coupled transition dipoles of the TPE derivatives. The mobile LC characteristics of AIE luminogens can be advantageous for highly efficient solid-state emission.
ISSN:1932-7447
1932-7455
DOI:10.1021/acs.jpcc.6b10026