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Low-temperature one-step synthesis of covalently chelated ZnO/dopamine hybrid nanoparticles and their optical properties

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Abstract

Dopamine covalently chelated ZnO nanoparticles were synthesized by a nonaqueous one-step chemical process at a temperature as low as 60 °C. The formation of ZnO/dopamine hybrid structure was proved by x-ray powder diffraction (XRD), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) techniques. Detailed absorption, luminescence, and time-resolved decay studies were performed for these ZnO/dopamine hybrid nanoparticles. We observed an enhanced green emission, which could be assigned to a new band-gap emission based on the fast of nanosecond lifetime of the green emission. Our results demonstrated that the change of optical properties of ZnO nanoparticles after covalently chelated by dopamine ligands is closely associated with the formation of new band structure.

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Acknowledgments

We thank Mr. Junfeng Chen for time-resolved fluorescent lifetime measurement and Mrs. Meiling Ruan for TEM analysis.

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Authors and Affiliations

  1. State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics of Chinese Academy of Sciences, Shanghai, 200050, China

    WeiMin Huang, Peng Jiang, ChenYang Wei, DaKui Zhuang & Jianlin Shi

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  1. WeiMin Huang
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  2. Peng Jiang
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  3. ChenYang Wei
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Correspondence to Jianlin Shi.

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Huang, W., Jiang, P., Wei, C. et al. Low-temperature one-step synthesis of covalently chelated ZnO/dopamine hybrid nanoparticles and their optical properties. Journal of Materials Research 23, 1946–1952 (2008). https://doi.org/10.1557/JMR.2008.0243

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