光致变色
发光
光致发光
光化学
材料科学
分子
光电子学
纳米技术
化学物理
化学
有机化学
作者
Zihao Zhao,Yusong Cai,Qiang Zhang,Anze Li,Tianwen Zhu,Xiaohong Chen,Wang Zhang Yuan
标识
DOI:10.1038/s41467-024-48728-w
摘要
Abstract Photoluminescence (PL) colour-changing materials in response to photostimulus play an increasingly significant role in intelligent applications for their programmability. Nevertheless, current research mainly focuses on photochemical processes, with less attention to PL transformation through uniform aggregation mode adjustment. Here we show photochromic luminescence in organic crystals (e.g. dimethyl terephthalate) with PL varying from dark blue to purple, then to bright orange-red, and finally to red. This change is attributed to the emergence of clusters with red emission, which is barely achieved in single-benzene-based structures, thanks to the subtle molecular rearrangements prompted by light. Crucial to this process are the through-space electron interactions among molecules and moderate short contacts between ester groups. The irradiated crystals exhibit reversible PL transformation upon sufficient relaxation, showing promising applications in information storage and smart optoelectronic devices. This research contributes to the development of smart photochromic luminescent materials with significant PL colour transformations through molecular rearrangement.
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