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

โœ Scribed by Haitao Li; Xiaodie He; Yang Liu; Hui Huang; Suoyuan Lian; Shuit-Tong Lee; Zhenhui Kang

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
579 KB
Volume
49
Category
Article
ISSN
0008-6223

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โœฆ Synopsis

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.

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