Highly luminescent covalently bonded layered double hydroxide-fluorescent dye nanohybrids

Li Yan, Yu Wang, Jinhua Li, Sergii Kalytchuk, Andrei S. Susha, Stephen V. Kershaw, Feng Yan, Andrey L. Rogach, Xianfeng Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

Incorporation of fluorescein dye molecules into layered double hydroxide (LDH) nanoparticles to form nanocomposites has great potential for optical and biological applications. Herein, we report a novel highly luminescent covalently bonded LDH-sodium fluorescein dye nanohybrid. This nanocomposite shows a significantly higher quantum yield (QY) of 55.1% than the nanohybrids prepared using the previously reported anion exchange (3.0%) and coprecipitation (12.4%) approaches. Our LDH-sodium fluorescein nanohybrid is superior to the pure fluorescent dye from a number of perspectives. Firstly, the nanohybrid exhibits excellent linearity between the fluorescence intensity and the concentration in a certain range. Secondly, the nanohybrid remains fluorescent even in a dry powder form. Thirdly, the nanohybrid can self-assemble into a transparent and free-standing film which is fluorescent under UV, which will lead to important applications in optical devices.
Original languageEnglish
Pages (from-to)4490-4494
Number of pages5
JournalJournal of Materials Chemistry C
Volume2
Issue number22
DOIs
Publication statusPublished - 14 Jun 2014

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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