A Novel One-Step Approach to Synthesize Fluorescent Carbon Nanoparticles

被引：288

作者：

Zhang, Bing ^{[1
,2
]}

Liu, Chun-yan ^{[1
]}

Liu, Yun ^{[1
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100086, Peoples R China

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2010年 / 28期

关键词：

Fluorescence; Carbon; Nanoparticles; Quantum dots; Hydrothermal synthesis; QUANTUM DOTS; NANOCRYSTALS;

D O I：

10.1002/ejic.201000622

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Fluorescent carbon nanoparticles (CNPs) were prepared directly by a simple hydrothermal method by using L-ascorbic acid as a carbon source. The synthesized CNPs with higher photoluminescence efficiencies (6.79%) are monodisperse, and their diameter is about 2.0 nm. In contrast to previous methods, for this one-step process, neither strong acid treatment nor further surface modification is necessary. Aqueous solutions of the CNPs are stable at room temperature for at least half a year. In particular, the fluorescence of the CNPs does not change over a wide pH range and even in solvents with strong ionic strengths (e.g. 2.M NaCl).

引用

页码：4411 / 4414

页数：4

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