Lanthanide CPs: The guest-tunable drastic changes of luminescent quantum yields, and two photon luminescence

Cheng Hui Zeng, Jing Ling Wang, Yang Yi Yang, Tian Shu Chu, Sheng Liang Zhong, Seik Weng Ng, Wing Tak Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

43 Citations (Scopus)

Abstract

Four kinds of guest-driven lanthanide coordination polymers (CPs) have been synthesized. They have similar formula: [Tb(NPA)3CH3CN]n(1, H-NPA = N-phenylanthranilic acid), {[Tb(NPA)3CH3OH]CH3OH}n(2), [Ln(NPA)3DMF]n(Ln = Tb (3a), Gd (3b), Eu (3c)), and [Tb(NPA)3DMSO]n(4). These complexes were characterized by single-crystal diffraction, PXRD, FT-IR, TGA, DTA, EA, UV-vis spectra and luminescence lifetime measurements. They are all highly thermostable, acid and base resistant. The luminescence quantum yields (QY) of Tb3+complexes: 1, 2, 3a and 4 are 4.0%, 9.0%, 44% and 46% respectively. Interestingly, there is a drastic change from 4.0% to 46% in luminescence QY by exchanging the coordination solvent, the oscillation of small molecule near the Tb3+causes the drastic change. Furthermore, the octupolar-like structure of 4 has a high two-photon luminescence.
Original languageEnglish
Pages (from-to)2235-2242
Number of pages8
JournalJournal of Materials Chemistry C
Volume2
Issue number12
DOIs
Publication statusPublished - 28 Mar 2014

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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