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单分散CdS纳米晶/PNIPAM复合水凝胶的制备及其温敏荧光特性

DOI: 10.3724/SP.J.1105.2012.11233, PP. 440-445

Keywords: CdS,单分散纳米晶,复合凝胶,温敏,光致发光

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Abstract:

采用液体-固体-溶液法(LSS)制备单分散CdS纳米晶;通过自由基聚合制备单分散CdS纳米晶/聚N-异丙基丙烯酰胺(CdS/PNIPAM)复合温敏水凝胶.采用HRTEM、XRD、FTIR、DSC、PL等对CdS纳米晶、CdS/PNIPAM温敏复合凝胶的微观结构与性能进行了表征,变温荧光光谱研究了温度对凝胶荧光性能的影响.结果表明,CdS纳米晶粒径约为2.8nm,单分散性良好;复合凝胶的荧光发射强度与环境温度存在一定的关联性,且呈可逆性.

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