水热法一步合成N/P-掺杂碳点及其荧光性能研究  

One-step synthesis of N/P-doped carbon dots and their fluorescence properties

作　　者：杨凤[1] 廖彩云 王美娜 郑保战[1] 肖丹[1,3] 吴莉[4] 郭勇[1] YANG Feng;LIAO Cai-yun;WANG Mei-na;ZHENG Bao-zhan;XIAO Dan;WU Li;GUO Yong(College of Chemistry,Sichuan University,Sichuan,Chengdu 6 10064,China;College of Chemical Engineering,Sichuan University,Chengdu 610064,China;Analytical&Testing Center,Sichuan University,Chengdu 610064,China;Chengdu product quality inspection institute co.,LTD,Chengdu 6 10100,China)

机构地区：[1]四川大学化学学院,四川成都610064 [2]成都产品质量检验研究院有限公司,四川成都610100 [3]四川大学化学工程学院,四川成都610064 [4]四川大学分析测试中心,四川成都610064

出　　处：《化学研究与应用》2018年第3期313-318,共6页Chemical Research and Application

基　　金：四川大学实验技术立项项目(20170041)资助

摘　　要：本文采用水热合成法一步合成具有不同荧光性能的N/P-掺杂碳点。利用X-ray光电子能谱(XPS)和透射电子显微镜(TEM)对所得碳点的元素组成和微观形貌进行测试和分析。通过荧光光谱研究了不同碳点的光学性能,并考察了合成体系、碳源和掺杂情况对所得碳点荧光性能的影响。研究表明,通过加入植酸作为磷源成功实现了P-掺杂,所得碳点粒径约为2.3 nm。合成体系和碳源将影响所得碳点的荧光发射光谱和量子产率,通过P-掺杂可使其峰位发生明显移动,并改善碳点的荧光量子产率。We adopted one-step hydrothermal method to prepare the nitrogen/phosphorus-doped carbon dots with improved fluorescence properties.XPS and TEM were employed to investigate the components and morphologies of carbon dots,and their optical properties were studied by photoluminescent(P L)spectroscopy.In addition,we researched the effect of reaction systems,carbon sources and dopants on the fluorescence performances.Results indicated that P was successfully introduced to the surface of carbon dots with^2.3 nm diameter.Reaction systems and carbon sources have important effects on fluorescence emission spectra and quantum yields.P-dopant shifted the fluorescence emission spectra and improved the fluorescence quantum yields of as-synthesized dots.

关 键 词：碳点 氮/磷掺杂 荧光性能 

分 类 号：O657.3[理学—分析化学]