Facile method for gold nanocluster synthesis and fluorescence control using toluene and ultrasound

Jimmy Kuan Jung Li, Cherng Jyh Ke, Cheng An J. Lin, Zhi Hua Cai, Ching Yun Chen, Walter H. Chang

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

This study develops a method for the synthesis of environmentally safe, non-toxic, and color-tunable fluorescent nanomaterials using AuCl3 and toluene without additional surfactants or reduction agents. A facile method for the fluorescence control of gold nanoclusters using simple ultrasonic irradiation is reported. The cluster composition, size, and emission wavelength can be controlled by the ultrasonic irradiation time. There is low photobleaching and the quantum yields are sufficient for optical devices and biosensors. The proper control of ultrasonic conditions such as exposure time, temperature, frequency, duty cycle, and intensity allows the composition and color of fluorescent gold nanoclusters to be adjusted. The obtained materials will be very useful for multicolor molecular probe design in the future.

Original languageEnglish
Pages (from-to)23-28
Number of pages6
JournalJournal of Medical and Biological Engineering
Volume33
Issue number1
DOIs
StatePublished - 2013

Keywords

  • Au
  • Composition
  • Fluorescence
  • Nanoclusters
  • Ultrasound

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