[摘要]：A novel host mol. (I) bearing a dibenzo[24]-crown-8 moiety and a dipicolinic acid group was synthesized, and its Tb3+ complex displayed a satisfactory luminescent emission. The tris[2]pseudorotaxane formed from [TbL3]3- (H2L = I) and ferrocene deriv., [FcCH2NH2CH2Ph](PF6), reveals excellent reversible luminescent lanthanide behavior. The luminescence is quenched upon displacement of [FcCH2NH2CH2Ph]+ by K+.
