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

Zhao Zhang, Heini Feng, Lin Liu, Chao Yu, Xingqiang Lü*, Xunjin ZHU, Rick W K WONG, Richard A. Jones, Mei Pan, Chengyong Su

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

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

Original languageEnglish
Pages (from-to)6229-6241
Number of pages13
JournalDalton Transactions
Volume44
Issue number13
DOIs
Publication statusPublished - 7 Apr 2015

Scopus Subject Areas

  • Inorganic Chemistry

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