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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 AuI and L1, affords 1 (L1AuCl) 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 tran
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