碳量子点的氨基化及其对发光性能的影响  

Preparation and photoluminescence property of amine-containing carbon quantum dots

作　　者：田瑞雪[1] 武玲玲[1] 赵清[1] 胡胜亮[1] 杨金龙[2] 

机构地区：[1]中北大学材料科学与工程学院,太原030051 [2]清华大学新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《化工新型材料》2014年第1期90-92,共3页New Chemical Materials

基　　金：国家自然科学基金(51272301;51172214;51172120);中国博士后基金资助项目(2012M510788;2013T60269);山西省高等学校优秀青年带头人计划

摘　　要：利用水热反应釜的条件,使碳量子点的含氧基团与氨水反应,实现了碳量子点的表面氨基化。制备的氨基化碳量子点尺寸分布均匀,总的含氮量受反应温度影响。实验结果表明:氨基化后的碳量子点荧光发射性质明显优于未氨基化的碳量子点;氨基化的氮源及其氮源加入反应过程中的顺序均会影响碳量子点的荧光发射效率。通过实验设计,确定出了氨基化碳量子点的最佳制备条件,从而为碳量子点的光学性质调控及应用奠定了技术支持。Amine-containing carbon quantum dots （CQDs） were prepared by surface reaction between oxygen-contained groups and ammonia solution in the autoclave. CQDs showed a uniform size and their contents of N element vary with the reaction temperature. The results indicated that the photoluminescent property of amine-containing CQDs was better than that of as-prepared CQDs. On the other hand, the efficiency of fluoresce emission from amine-containing CQDs depended on the types of nitrogen sources and their adding orders in the reaction. The optimum conditions for the preparation of CQDs was finally obtained by a series of experimental design, which was the basis in tuning optical properties and applications of CQDs.

关 键 词：碳量子点 胺基基团 光致发光 

分 类 号：O471.1[理学—半导体物理]