Achieving Persistent Room Temperature Phosphorescence and Remarkable Mechanochromism from Pure Organic Luminogens.

Gong, Yongyang; Chen, Gan; Peng, Qian; Yuan, Wang Zhang; Xie, Yujun; Li, Shuhong; Zhang, Yongming; Tang, Ben Zhong · Adv Mater · 2015

basic_science · Level V

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Abstract

Persistent room temperature phosphorescence (RTP) from pure organic luminogens can be rationally realized based on the crystallization-induced phosphorescence phenomenon and severe crystallization. A perfect crystal with dense molecular packing and effective inter-molecular interactions isolates the triplet excitons from quenching sites and significantly blocks the high-energy vibrational dissipation, thus yielding long-lasting RTP.

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