高荧光氮、硫共掺杂碳点的制备及对痕量汞离子的选择性测定
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- 英文论文题名：A hydrothermal route to prepare high luminescent nitrogen-and sulfur-co-doped carbon dots as nanosensor for Hg~(2+)
- 论文作者：卓克垒 ; 王春风 ; 孙东 ; 陈玉娟 ; 刘建明
- 英文论文作者：Kelei Zhuo ; Chunfeng Wang ; Dong Sun ; Yujuan Chen ; Jianming Liu ; School of Chemistry and Chemical Engineering ; Henan Normal University ; School of Life Science ; Henan Normal University
- 年：2016
- 作者机构：河南师范大学化学化工学院;河南师范大学生命科学学院;
- 论文关键词：高荧光 ; 掺杂碳点 ; 荧光探针 ; 水热处理
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十三分会：绿色化学
- 语种：中文
- 分类号：TB383.1;O657.3;O613.71
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十三分会 ; 绿色化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：120k
- 原文格式：D
- 会议级别：全国
摘要
碳点是一类新型的碳纳米材料,具有良好的荧光性能、低的毒性和良好的生物兼容性等优点。这些独特的性能使得碳点在诸多领域得到应用,如生物成像~([1])和传感器~([2])等。通常情况下,所制备碳点的量子产率较低,需要表面修饰来提高其量子产率。但是表面功能化需要比较繁琐的操作步骤。因此,建立一个简便和绿色的高荧光碳点的制备方法,一直是材料科学领域的一个挑战。本工作通过一步水热处理盐酸吡硫醇和氧化石墨烯的混合液,制备出氮、硫共掺杂碳点建立了一个简便、低耗费和绿色的制备高荧光的氮、硫共掺杂碳点的新方法。用X-射线光电子能谱、透射电镜和荧光光谱等手段对材料的结构和光学性能进行了研究。实验结果表明所制备的氮、硫共掺杂碳点具有高的量子产率(32.2%)、良好的荧光稳定性、良好的水溶性和上转换荧光等特性。此外,该材料能用作荧光探针测定水溶液中的汞离子,具有高的选择性、低的检测限(1.0 nM)和宽的线性范围。
Carbon dots(CDs) have attracted tremendous interest due to their excellent properties such as low cytotoxicity and good biocompatibility.The excellent performances of CDs make them be applied in many fields such as bioimaging~([1]) and sensors~([2]).The generality of CDs shows a comparatively low photoluminescence(PL) quantum yield(QY).Thus,there is a great need to develop a facile and green method for synthesizing CDs with strong photoluminescence emission.Herein,we suggest a simple approach to prepare nitrogen-and sulfur-co-doped carbon dots(N/S-CDs) with a high PL efficiency through hydrothermal treatment of the pyritinol hydrochloride in the presence of GO.The N/S-CDs possess excellent PL properties such as high solubility,good luminescence stability,excitation-dependent emission,up-conversion PL,and high QY of ca.32.2%.Furthermore,the prepared N/S-CDs were used as a fluorescent probe to detect Hg~(2+) ion,showing an excellent selectivity and wide linear range.
Carbon dots(CDs) have attracted tremendous interest due to their excellent properties such as low cytotoxicity and good biocompatibility.The excellent performances of CDs make them be applied in many fields such as bioimaging~([1]) and sensors~([2]).The generality of CDs shows a comparatively low photoluminescence(PL) quantum yield(QY).Thus,there is a great need to develop a facile and green method for synthesizing CDs with strong photoluminescence emission.Herein,we suggest a simple approach to prepare nitrogen-and sulfur-co-doped carbon dots(N/S-CDs) with a high PL efficiency through hydrothermal treatment of the pyritinol hydrochloride in the presence of GO.The N/S-CDs possess excellent PL properties such as high solubility,good luminescence stability,excitation-dependent emission,up-conversion PL,and high QY of ca.32.2%.Furthermore,the prepared N/S-CDs were used as a fluorescent probe to detect Hg~(2+) ion,showing an excellent selectivity and wide linear range.
引文
[1]Zhu,S.J.;Tang,S.J.J.;Zhang,H.;Yang,B.Chem.Commun.,2012,48:4527.
[2]Yan,F.Y.;Zou,Y.;Wang,M.;Mu,X.L.;Yang,N.;Chen,L.Sens.Actuators B,2014,192:488.
[2]Yan,F.Y.;Zou,Y.;Wang,M.;Mu,X.L.;Yang,N.;Chen,L.Sens.Actuators B,2014,192:488.