基于Schiff碱反应的新型碳量子点制备及其影响因素研究  

Synthesis and Factors of A Novel Carbon Quantum Dot Based on Schiff's Base Reaction

作　　者：占霞飞 唐建设[1] 吴军[1] 

机构地区：[1]安徽建筑大学环境与能源工程学院,安徽合肥230601

出　　处：《发光学报》2016年第10期1195-1202,共8页Chinese Journal of Luminescence

基　　金：国家自然科学基金(21205001);国家科技支撑计划(2012BAJ08B03)资助项目

摘　　要：通过简便水热合成方法,以戊二醛（GA）与3-氨丙基三甲氧基硅烷（APTMS）的Schiff碱反应制备了新型碳量子点。该碳量子点为直径2~7 nm的球体,激发波长为350 nm时,最大发射峰位于400 nm,量子产率为13.6%。实验表明,碳量子点的最佳制备条件是APTMS与GA的量比为1∶2,在180℃下加热8 h。碳量子点在p H=6.0磷酸缓冲液中的荧光强度最大,且荧光强度随测定温度（273~303 K）的升高而降低。A novel carbon quantum dot was synthesized from（ 3-aminopropyl）-trimethoxysilane（ APTMS） and glutaraldehyde（ GA） by facile hydrothermal method based on Schiff＇s base reaction.The carbon quantum dot was spherical with a diameter of about 2- 7 nm,and the excitation wavelength and maximum emission peak were 350 and 400 nm,respectively. The fluorescence quantum yield was up to 13. 6%. The experiment results show that the optimal prepared condition of carbon quantum dots is APTMS and GA molar ratio of 1∶ 2,heated at 180 ℃ for 8 h. The fluorescence intensity of carbon quantum dots is the maximum in p H 6. 0 phosphate buffer solution. In addition,the fluorescence intensity decreases with the increase of the measuring temperature from 273 to303 K.

关 键 词：碳量子点 Schiff碱反应 GA APTMS 光学性质 

分 类 号：O482.31[理学—固体物理]