Open AccessRevisiting an ancient inorganic aggregation‐induced emission system: An enlightenment to clusteroluminescence
Author(s) -
Zhao Zheng,
Wang Zaiyu,
Tavakoli Javad,
Shan Guogang,
Zhang Jianyu,
Peng Chen,
Xiong Yu,
Zhang Xuepeng,
Cheung Tsz Shing,
Tang Youhong,
Huang Bolong,
Yu Zhaoxun,
Lam Jacky W. Y.,
Tang Ben Zhong
Publication year - 2021
Publication title -
aggregate
Language(s) - English
Resource type - Journals
ISSN - 2692-4560
DOI - 10.1002/agt2.36
Subject(s) - chromophore , delocalized electron , excited state , photochemistry , luminescence , quantum yield , atomic orbital , chemical physics , visible spectrum , chemistry , ion , materials science , fluorescence , electron , atomic physics , physics , optoelectronics , optics , quantum mechanics , organic chemistry
Organic and inorganic clusteroluminescence have attracted great attention while the underlying mechanisms is still not well understood. Here, we employed a series of ancient inorganic complexes platinocyanides with aggregation‐induced emission property to elucidate the mechanism of clusteroluminescence including how does the chromophore form and how does the solid structures influence the luminescence behaviors. The results indicate that the isolated platinocyanide cannot work as a chromophore to emit visible light, while their clusterization at aggregate state can trigger the d‐orbitals coupling of the platinum atoms to facilitate the electron exchange and delocalization to form a new chromophore to emit visible light. Furthermore, the counter ions and H 2 O ligands help to rigidify the three‐dimensional network structure of the platinocyanides to suppress the excited state nonradiative decay, resulting in the high quantum yield of up to 96%. This work fundamentally helps understanding both the organic and inorganic clusteroluminescence phenomenon.