| Photoluminescence quenching of quantum-confined cadmium sulfide clusters by norbornadiene derivatives |
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| 作者姓名： | 谢普会 王雪松 张宝文 曹怡 |
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| 作者单位： | Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China，Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China，Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China，Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China |
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| 摘 要： | Influence of norbornadiene and its derivatives on the photoluminescence (PL) of quantum-confined cadmium sulfide clusters (Q-CdS) prepared in reverse micelles was investigated.It was found that norbornadiene-2,3-dicarboxylic acid (3) and its monopotassium salt (4) quenched PL intensity by 77% and 62%,respectively,whereas its dipotassium salt (5),norbornadiene (1) and norbornadiene-2,3-dimethylcarboxylate (2) had no effect on PL intensity.The formation constants for adducts formed between defect sites at the surface of Q-CdS clusters and 3 or 4 were also determined.PL quenching effect was attributed to the presence of ionizable proton which is considered to be able to trap photogenerated electrons and remove them from possible decay process.Measurements of the PL decay by single photon counting technique also supported these steady-state observations.
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Photoluminescence quenching of quantum-confined cadmium sulfide clusters by norbornadiene derivatives |
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| XIE,Pu-Hui WANG,-Xue-SongZHANG,Bao-Wen CAO,YiInstitute of Photographic Chemistry,Chinese Academy of Sciences,Beijing ,China.Photoluminescence quenching of quantum-confined cadmium sulfide clusters by norbornadiene derivatives[J].Chinese Journal of Chemistry,1998,16(2):109-117. |
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| Authors: | XIE Pu-Hui WANG -Xue-SongZHANG Bao-Wen CAO YiInstitute of Photographic Chemistry Chinese Academy of Sciences Beijing China |
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| Institution: | XIE,Pu-Hui WANG,-Xue-SongZHANG,Bao-Wen CAO,YiInstitute of Photographic Chemistry,Chinese Academy of Sciences,Beijing 100101,China |
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| Abstract: | Influence of norbornadiene and its derivatives on the photoluminescence (PL) of quantum-confined cadmium sulfide clusters (Q-CdS) prepared in reverse micelles was investigated.It was found that norbornadiene-2,3-dicarboxylic acid (3) and its monopotassium salt (4) quenched PL intensity by 77% and 62%,respectively,whereas its dipotassium salt (5),norbornadiene (1) and norbornadiene-2,3-dimethylcarboxylate (2) had no effect on PL intensity.The formation constants for adducts formed between defect sites at the surface of Q-CdS clusters and 3 or 4 were also determined.PL quenching effect was attributed to the presence of ionizable proton which is considered to be able to trap photogenerated electrons and remove them from possible decay process.Measurements of the PL decay by single photon counting technique also supported these steady-state observations. |
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| Keywords: | Q-CdS clusters reverse micelles photoluminescence quenching norbornadiene derivatives |
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