Effects of the grafting on the fluorescence properties of CdTe nanocrystals |
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| Authors: | Fang Mei Xi‐Wen He Wen‐You Li Yu‐Kui Zhang |
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| Institution: | 1. Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China;2. National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116011, People's Republic of China |
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| Abstract: | In this paper, we systematically investigated the influence of graft reagents having an amino or a carboxyl terminus with different chain lengths on the fluorescence properties of water‐soluble thioglycolic acid‐stabilized CdTe nanocrystals (TGA–CdTe). Strong enhancement effects of the grafting on the fluorescence intensity of TGA–CdTe were observed. The experiment results demonstrated that short‐chain‐length grafting can increase the fluorescence intensity of CdTe nanocrystals (NCs) better than long‐chain‐length grafting, and the grafting did not influence the emission wavelength of the CdTe NCs. The fluorescence intensity of the carboxyl‐grafted TGA–CdTe was more stable than that of the amino‐grafted TGA–CdTe at wide pH ranges (pH 5.1–10.0). Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | TGA– CdTe grafting fluorescence |
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