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Luminescence Switching of Organogold(I) Complexes between Aggregation‐induced Phosphorescence Enhancement and Aggregation‐caused Quenching by Balancing Auxiliary Ligands around the Au I Center
Author(s) -
Zhuo Hao,
Chi Xin,
Jiang Mengtian,
Xu Haibing,
Zeng Minghua
Publication year - 2021
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202100186
Subject(s) - phosphorescence , luminescence , quenching (fluorescence) , chemistry , photochemistry , electron transfer , fluorescence , materials science , optoelectronics , physics , quantum mechanics
Attaching AIE‐active L1 ([1,1′:2′,1′′:4′′,1′′′‐quaterphenyl]‐2‐yldiphenylphosphane) to AuCl, shortened the distances of P−C bonds to promote electron cloud overlap between Au I and L1 , affords 1 ( L1 AuCl) with aggregation‐induced phosphorescence enhancement (AIPE) activity by 3 LMCT transitions. Then substituting the coplanar L2 (9‐ethynylanthracene) for the Cl − in 1 providing 2 , switches the luminescence to aggregation‐caused quenching (ACQ) activity. Furthermore, we restore the performance from ACQ to AIPE by metathesis reactions to transfer 2 into 1 . It is versatile synthetic strategy of reversible transformation between 1 and 2 that switches the luminescence of organogold(I) between AIPE and ACQ through balancing auxiliary ligands around the given metal.