In Situ Fabrication of Flexible, Thermally Stable, Large-Area, Strongly Luminescent Copper Nanocluster/Polymer Composite Films

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

14 Scopus Citations
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Author(s)

  • Stephen V. Kershaw
  • Bingkun Chen
  • Nirmal Goswami
  • Wing-Fu Lai
  • Jianping Xie

Detail(s)

Original languageEnglish
Pages (from-to)10206-10211
Journal / PublicationChemistry of Materials
Volume29
Issue number23
Early online date30 Nov 2017
Publication statusPublished - 12 Dec 2017

Abstract

Composite polymer films incorporating luminescent copper nanoclusters are conveniently fabricated by solution processing of a precursor mixture of polyvinylpyrrolidone, poly(vinyl alcohol), a Cu2+ salt, and glutathione in water. The formation of Cu nanoclusters takes place through chemical reactions of the precursors in a hydrogel network, whose dehydration during the subsequent aging process leads to aggregation-induced emission enhancement. Large-area (25 cm × 32 cm), flexible, transparent, thermally stable, bright-orange-emitting films are realized, with the photoluminescence quantum yield reaching 30%. The emission of the films is attributed to a phosphorescence mechanism, taking place through ligand-to-metal charge transfer followed by a radiative relaxation over a triplet state. Cu-nanocluster-based composite films are employed as a light-emitting layer for down-conversion orange light-emitting diodes.

Citation Format(s)

In Situ Fabrication of Flexible, Thermally Stable, Large-Area, Strongly Luminescent Copper Nanocluster/Polymer Composite Films. / Wang, Zhenguang; Xiong, Yuan; Kershaw, Stephen V.; Chen, Bingkun; Yang, Xuming; Goswami, Nirmal; Lai, Wing-Fu; Xie, Jianping; Rogach, Andrey L.

In: Chemistry of Materials, Vol. 29, No. 23, 12.12.2017, p. 10206-10211.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review