| 室温水相合成CdTe/CdS核/壳结构量子点 |
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| 引用本文： | 沈晓芳.室温水相合成CdTe/CdS核/壳结构量子点[J].化学通报,2011(7):669-672. |
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| 作者姓名： | 沈晓芳 |
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| 作者单位： | 食品科学与技术国家重点实验室江南大学食品学院; |
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| 基金项目： | 国家自然科学基金项目(21005032); 中央高校基本科研业务费专项资金(JUSRP10918); 江南大学食品科学与技术国家重点实验室开放课题项目(SKLF-KF200910)资助 |
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| 摘 要： | 开发了一种以聚乙烯吡咯烷酮为分散剂和稳定剂经条件温和的室温水相合成光谱可调的水溶性CdTe/CdS核/壳结构量子点的方法:向新鲜制备的CdTe量子点溶液中加入硫源,继续反应即可生成CdS壳层,通过控制硫源的浓度即可控制CdS壳层厚度,从而调节光谱性质和增强稳定性.采用XRD、TEM、HRTEM、荧光光谱以及紫外-可见光...
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| 关 键 词： | 水相合成 CdTe/CdS核/壳结构量子点 聚乙烯吡咯烷酮 |
Room Temperature Synthesis of CdTe/CdS Core/Shell Quantum Dots in Aqueous Solution |
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| Shen Xiaofang.Room Temperature Synthesis of CdTe/CdS Core/Shell Quantum Dots in Aqueous Solution[J].Chemistry,2011(7):669-672. |
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| Authors: | Shen Xiaofang |
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| Institution: | Shen Xiaofang(State Key Laboratory of Food Science and Technology,School of Food Science and Technology,Jiangnan University,Wuxi 214122) |
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| Abstract: | A facile procedure for preparing spectrum-tunable and water-soluble CdTe/CdS core/shell Quantum Dots(QDs) with good stability at room temperature was developed.Polyvinylpyrrolidone was used as dispersant and stabilizer in the synthesis.The emission colors of the prepared CdTe/CdS core/shell QDs could be readily tuned from green to red by varying S2-concentration to control the growth of the CdS shell onto the CdTe nanocrystals with residual Cd ions.The CdTe/CdS core/shell QDs were characterized by XRD,TEM,H... |
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| Keywords: | Water-phase synthesis CdTe/CdS core/shell quantum dots Polyvinylpyrrolidone |
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