发光学报, 2016, 37 (10): 1195, 网络出版: 2017-01-13
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 Schiffs Base Reaction
碳量子点 Schiff碱反应 光学性质 carbon quantum dots Schiffs base reaction GA glutaraldehyde (3-aminopropyl)trimethoxysilane APTMS optical properties
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pH=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。
Abstract
A novel carbon quantum dot was synthesized from (3-aminopropyl)-trimethoxysilane (APTMS) and glutaraldehyde (GA) by facile hydrothermal method based on Schiffs 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 pH 6.0 phosphate buffer solution. In addition, the fluorescence intensity decreases with the increase of the measuring temperature from 273 to 303 K.
占霞飞, 唐建设, 吴军. 基于Schiff碱反应的新型碳量子点制备及其影响因素研究[J]. 发光学报, 2016, 37(10): 1195. ZHAN Xia-fei, TANG Jian-she, WU Jun. Synthesis and Factors of A Novel Carbon Quantum Dot Based on Schiffs Base Reaction[J]. Chinese Journal of Luminescence, 2016, 37(10): 1195.
PDF全文
