First Examples of Near‐Infrared Luminescent Poly(methyl methacrylate)‐Supported Metallopolymers Based on Zn2Ln‐Arrayed Schiff Base Complexes
作者： Tie-Zheng Miao , Wei-Xu Feng , Zhao Zhang , Pei-Yang Su , Xing-Qiang Lü
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摘要: The first examples of Wolf Type II Zn2Ln-containing metallopolymers poly{MMA-co-[Zn2(L)2(4-vp)2Ln(NO3)3]} (Ln = La, Nd, Yb, Er, Gd; H2L N,N′-bis(salicylidene)ethylene-1,2-diamine; 4-vp 4-vinylpyridine; MMA methyl methacrylate) are obtained from the controlled copolymerization heterotrinuclear Zn2Ln-arrayed complexes [Zn2(L)2(4-vp)2Ln(NO3)3] 1; Ln 2; 3; 4; Gd, 5) with MMA. strong and characteristic near-infrared (NIR) luminescent Ln3+-centered emission for each PMMA-supported Er) hybrid materials is retained somewhat higher intrinsic quantum yields than those respective complex. Especially poly(MMA-co-3), which has more efficient sensitization both ligand-centered singlet (1LC) triplet (3LC) states chromophores, concentration self-quenching Yb3+-based NIR luminescence could be effectively prevented.
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