The first example of Tb3-containing metallopolymer-type hybrid materials with efficient and high color-purity green luminescence

摘要: In the series of homo-leptic trinuclear complexes {[Ln3(L)4Cl4(MeOH)(H2O)]·Cl} (Ln = La, 1; Ln Eu, 2; Tb, 3 or Gd, 4) self-assembled from allyl-modified benzimidazole-type ligand HL (4-allyl-2-(1H-benzo[d]imidazol-2-yl)-6-methoxyphenol) and LnCl3·6H2O, a suitable energy level match endows efficient green luminescence (Φoverall 72%) Tb3-arrayed complex 3. The copolymerization between each these monomers 1–4 CC-containing MMA (methyl methacrylate) NBE (norbornene) shows that degradative chain transfer terminal four flexible allyl groups within restrains their radical polymerization with while it does not hinder effective ring-opening metathesis (ROMP) NBE. Thus, two kinds PMMA-supported doping hybrid materials 1@PMMA, 2@PMMA, 3@PMMA 4@PMMA PNBE-supported metallopolymer-type Poly(NBE-1), Poly(NBE-2), Poly(NBE-3) Poly(NBE-4) are obtained, respectively. Especially for both high color-purity characteristic emission Tb3+ ions, improved physical properties including significantly enhanced 76% 83%) observed, covalent-bonding higher-concentration self-quenching as compared to doping.