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Preparation and Effect of Lighting on Structures and Properties of GSH Capped ZnSe QDs

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Abstract

L-glutathione (GSH) capped ZnSe quantum dots (QDs) were prepared by microwave-assisted aqueous synthesis. Then, the resulting QDs were illuminated under dark, ultraviolet light and incandescent light, respectively. Thereby effect of lighting on the structures and properties of QDs were studied systematically. It was revealed that particle size and element content of QDs took a sharp change after irradiation, while the crystal structure maintains nearly unaffected. Comparing to the ZnSe QDs under dark condition, counterparts irradiated by UV light possessed outstanding sphericity, size distribution and dispersion. And the content of sulfur (S) in ZnSe QDs irradiated by UV light was much higher relatively. The effect of lighting on vibration peaks of O−H was considerable. However, this effect was observed to be weak on other chemical bonds. The possible explanation ascribes to photo-chemical interactions can occur between S−H and O−H bonds on the surface of GSH ligand. The lighting induced GSH to occur photocatalytic oxidation on the surface of ZnSe QDs, which improved the optical properties of QDs. The effects of lighting rely on irradiation types, the sequence is UV light, incandescent light and dark from high to low.

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Acknowledgments

We gratefully acknowledge the financial support of the National High-Tech Research and Development Program of China (863 Program, 2007AA06Z418) and Youth Talent project of Science and Technology Research Program of Hubei Provincial Department of Education of China (Q20131105) and China Scholarship Council and Hubei Provincial Department of Education of China (201308420539) and Coal Conversion and New Carbon Materials Hubei Key Laboratory(Wuhan University of Science and Technology (WKDM201301) and Wuhan University of Science and Technology Foundation of China (z00980 and 2014XG006).

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Authors and Affiliations

  1. College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan, 430081, People’s Republic of China

    Ling Ding, Zeze Peng, Jinhui Zhou & Yuhe Liang

  2. College of Resource & Environmental Sciences, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, People’s Republic of China

    Ling Ding & Peijiang Zhou

  3. Birck Nanotechnology Center and School of Industrial Engineering, Purdue University, West Lafayette, IN, 47906, USA

    Ling Ding, Gary J. Cheng, Qiong Nian & Dong Lin

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  1. Ling Ding
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  2. Zeze Peng
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  3. Peijiang Zhou
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  4. Gary J. Cheng
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  5. Qiong Nian
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  6. Dong Lin
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  7. Jinhui Zhou
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  8. Yuhe Liang
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Correspondence to Ling Ding or Peijiang Zhou.

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Ding, L., Peng, Z., Zhou, P. et al. Preparation and Effect of Lighting on Structures and Properties of GSH Capped ZnSe QDs. J Fluoresc 25, 1663–1669 (2015). https://doi.org/10.1007/s10895-015-1653-7

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  • DOI: https://doi.org/10.1007/s10895-015-1653-7

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