期刊
BIOSENSORS & BIOELECTRONICS
卷 60, 期 -, 页码 292-298出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2014.04.046
关键词
Carbon dots; Green synthesis; Sensing; Bioimaging
类别
资金
- National Natural Science Foundation of China [31100981]
- Doctoral Program of Higher Education of China [20110182120014]
- Natural Science Foundation Project of CQ CSTC [cstc2013jcyjA10117]
- Fundamental Research Funds for the Central Universities [XDJK2013B038]
- Innovative Research Team in University of Chongqing
An innovative and green strategy to synthesize carbon dots (CDs) with a quantum yield (QY) of nearly 19.8% has been successfully established for the first time. Subsequently, the possible fluorescence (FL) mechanism was elucidated by fluorescence, UV-vis, high resolution transmission electron microscope (HR-TEM), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses. Significantly, not only the precursor of CDs and whole synthesis procedure was green, but also the CDs obtained here exhibited various advantages including high fluorescent QY, excellent photostability, non-toxicity and satisfactory stability. Additionally, the CDs were employed for assaying Fe3+ based on direct interactions between Fe3+ and -COOH, -OH and -NH2 of CDs, resulting in aggregations that facilitate to quench their fluorescence. The decrease of fluorescence intensity permitted detections of Fe3+ in a linear range of 5.0 x 10(-9)-1.0 x 10(-4) mol/L, with a detection limit of 1.7 x 10(-9) mol/L at a signal-to-noise ratio of 3, suggesting a promising assay for Fe3+. Eventually, the CDs were applied for cell imaging and coding, demonstrating their potential towards diverse applications. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据