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Issue 36, 2017
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Three polymorphs of one luminogen: how the molecular packing affects the RTP and AIE properties?

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Abstract

Polymorphism of organic molecules has received special attention, since the significantly different photophysical properties can provide important information to build a bridge between the micro- and macro-world. Here, we report three crystalline polymorphs of CzS-CN, which display much different properties of room temperature phosphorescence (RTP) and aggregation-induced emission (AIE). Due to their different molecular packings, the RTP lifetimes change from 266 ms to 41 ms, and then to 32 ms, accompanied by different photoluminescence quantum yields of crystals from 22.6% and 17.8% to 6.9%. Careful analyses of these crystal structures demonstrate that the properties are highly related to the packing mode and molecular configuration, regardless of the same chemical structure, thus disclosing some important clues to understand the structure–packing–property relationship of RTP and AIE performances.

Graphical abstract: Three polymorphs of one luminogen: how the molecular packing affects the RTP and AIE properties?

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Publication details

The article was received on 12 Aug 2017, accepted on 24 Aug 2017 and first published on 29 Aug 2017


Article type: Communication
DOI: 10.1039/C7TC03656F
Citation: J. Mater. Chem. C, 2017,5, 9242-9246
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    Three polymorphs of one luminogen: how the molecular packing affects the RTP and AIE properties?

    J. Yang, Z. Ren, B. Chen, M. Fang, Z. Zhao, B. Z. Tang, Q. Peng and Z. Li, J. Mater. Chem. C, 2017, 5, 9242
    DOI: 10.1039/C7TC03656F

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