A new synthetic approach for substitutional solid solutions in a 3D coordination polymer: Cation vacancy, and tunable photoluminescence

Aliyu M. Hamisu, Fendi Y. Wardana, Azhar Ariffin, Irshad Baig, Christos D. Malliakas, Arief C. Wibowo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Solid solution featuring mixed valence in metal-organic coordination polymer (MOCP) is rare. Inspired by the flexibility of Pb2+ to undergo cation exchange, and its ability to adopt a variety of coordination numbers (CN) and chemical environments (CE), herein we report the first, to our knowledge, hetero-valent, single and multiple substituted MOCP with cation vacancy featuring tunable photoluminescence, which may pave a way towards a tunable, functional MOCP. The 3D Pb MOCP features 1D moiety which contains three unique Pb2+ sites, each with a different CN and CE, that can undergo cationic substitutions with exogenous divalent as well as aliovalent, e.g. mono- or trivalent cations under appropriate conditions. The formation of solid solution is confirmed by Single Crystal and Powder X-ray Diffractions, SEM-EDS, ICP-OES, as well as XPS. A tunable photoluminescent (PL) color exhibiting good antennae effect and retention of original 3D Pb host color is observed using as little as 6 wt% of Eu3+ dopant. More importantly, the PL intensity of Eu3+ substituted Pb MOCP increases as dopant amount increases even up to 80 wt% doping, a rather rare case and the first, to our knowledge, in MOCP solid solution.

Original languageEnglish (US)
Article number120948
JournalJournal of Solid State Chemistry
Volume279
DOIs
StatePublished - Nov 2019

Keywords

  • Cation vacancy
  • Doped metal organic coordination polymer
  • Hetero-valent
  • Photoluminescence
  • Solid solution

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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