| 6-巯基烟酸修饰的CdSe纳米晶的合成及应用 |
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| 引用本文： | 梁耀珍,俞英,王伟杰,胡小刚,吴建中,曹玉娟.6-巯基烟酸修饰的CdSe纳米晶的合成及应用[J].分析科学学报,2010,26(6). |
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| 作者姓名： | 梁耀珍 俞英 王伟杰 胡小刚 吴建中 曹玉娟 |
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| 作者单位： | 华南师范大学化学与环境学院,广东广州,510006 |
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| 基金项目： | 国家自然科学基金(No.20975041); 广东省自然科学基金重点项目(No.10251063101000000) |
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| 摘 要： | 以6-巯基烟酸(6-MNA)为修饰剂,在水溶液中合成CdSe纳米晶,考察了pH值、反应物不同配比、反应温度及反应时间等条件对合成CdSe纳米晶荧光强度的影响,获得最佳合成条件为:反应物配比Cd2+∶HSe-∶6-MNA=1∶0.5∶3,溶液pH值为9.70,回流温度60℃,回流时间30min。透射电镜观察所合成的纳米晶形貌为树状,与传统的球状不同,激发及发射波长分别位于400nm和543nm,与传统的球状纳米晶相似。同时考察了缓冲溶液的体积与pH值、反应温度、反应时间对体系荧光强度的影响。在最佳实验条件下,体系的荧光强度与牛血清白蛋白(BSA)的浓度呈线性关系,线性范围为0～4.5×10-7mol/L,相关系数R=0.9851,检出限为1.0×10-8mol/L。该方法用于合成样及实际样品的测定,结果令人满意。
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| 关 键 词： | 6-巯基烟酸 CdSe纳米晶 牛血清白蛋白 |
Preparation of 6-Mercapto-nicotinic Acid Modified CdSe Nanoparticles and Its Application |
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| LIANG Yao-zhen,YU Ying,WANG Wei-jie,HU Xiao-gang,WU Jian-zhong,CAO Yu-juan.Preparation of 6-Mercapto-nicotinic Acid Modified CdSe Nanoparticles and Its Application[J].Journal of Analytical Science,2010,26(6). |
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| Authors: | LIANG Yao-zhen YU Ying WANG Wei-jie HU Xiao-gang WU Jian-zhong CAO Yu-juan |
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| Institution: | LIANG Yao-zhen,YU Ying,WANG Wei-jie,HU Xiao-gang,WU Jian-zhong,CAO Yu-juan (College of Chemistry and the Environment,South China Normal University,Guangzhou510006) |
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| Abstract: | Water-soluble 6-mercapto-nicotinic acid capped CdSe nanoparticles were synthesized.The reaction conditions such as pH value,molar ratio of reactants,reaction time and temperature were optimized.The transmission electron microscopy results showed that the synthesized CdSe nanoparticles were dendroides-like.The excitation and emission wavelengths were 400nm and 543nm,respectively. The influence on the fluorescence intensity of CdSe/6-MNA in the presence of bovine serum albumin (BSA)was studied.It was found th... |
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| Keywords: | 6-Mercapto-nicotinic acid CdSe nanocrystals Bovine serum albumin |
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