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One-step ultrasonic synthesis of water-soluble carbon nanoparticles with excellent photoluminescent properties

  • Haitao Li
  • , Xiaodie He
  • , Yang Liu
  • , Hui Huang
  • , Suoyuan Lian
  • , Shuit-Tong Lee
  • , Zhenhui Kang

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Monodispersed water-soluble fluorescent carbon nanoparticles (CNPs) were synthesized directly from glucose by a one-step alkali or acid assisted ultrasonic treatment. The CNPs were characterized by transmission electron microscopy, optical fluorescent microscopy, fluorescent spectrophotometry, fourier transform infrared spectrophotometry and ultraviolet-visible spectrophotometry. The results showed that the particle surfaces were rich in hydroxyl groups, giving them high hydrophilicity. The CNPs could emit bright and colorful photoluminescence covering the entire visible-to-near infrared (NIR) spectral range. Notably, the NIR emission of the CNPs could be obtained by NIR excitation. Furthermore, these CNPs also had excellent up-conversion fluorescent properties. © 2010 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)605-609
JournalCarbon
Volume49
Issue number2
DOIs
Publication statusPublished - Feb 2011

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