光致发光
量子产额
材料科学
碳化
纳米点
分散性
钝化
荧光
产量(工程)
纳米技术
化学工程
碳纤维
光电子学
扫描电子显微镜
光学
图层(电子)
冶金
复合材料
工程类
高分子化学
物理
复合数
作者
Bisang Chen,Feiming Li,Shunxing Li,Wen Weng,Hong‐Xu Guo,Tao Guo,Xiaoyang Zhang,Yabin Chen,Tingting Huang,Xiaolin Hong,Shiyu You,Yuemei Lin,Kunhong Zeng,Chenfei Shen
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2013-01-01
卷期号:5 (5): 1967-1967
被引量:285
摘要
Carbon nanodots (CDs) have been synthesized at gram scale with a high yield (41.8%) by carbonization of sucrose with oil acid in one simple step. The synthesized CDs are monodisperse with a narrow size distribution (average 1.84 nm in size), and show a high fluorescence quantum yield (21.6%) without passivation. The PL intensity of the obtained CDs is pH independent over a range of 2–8. Besides, their PL intensity remains unchanged even after six hours of UV excitation and six months of storage, exhibiting excellent stability. The obtained CDs have been used for cell imaging. The results demonstrate that the prepared CDs have great potential for real applications.
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