Microwave-assisted synthesis of highly luminescent AgInS2/ZnS nanocrystals for dynamic intracellular Cu(II) detection

Wei-Wei Xiong; Guo-Hai Yang; Xing-Cai Wu; Jun-Jie Zhu

doi:10.1039/C3TB20638F

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Microwave-assisted synthesis of highly luminescent AgInS₂/ZnS nanocrystals for dynamic intracellular Cu(ii) detection†

Wei-Wei Xiong,^a Guo-Hai Yang,^a Xing-Cai Wu*^a and Jun-Jie Zhu*^a

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* Corresponding authors

^a State Key Lab. of Analytical Chemistry for Life Science, Key Lab. of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, P. R. China
E-mail: wuxingca@nju.edu.cn, jjzhu@nju.edu.cn
Fax: +86-25-83597204
Tel: +86-25-83597204

Abstract

Low-toxicity, highly luminescent, and water-soluble AgInS₂/ZnS nanocrystals (NCs) have been synthesized via a microwave-assisted approach. The structure and optical features of the AgInS₂/ZnS NCs were characterized by X-ray diffraction, high resolution transmission electron microscopy, Fourier transform infrared spectroscopy, ultraviolet visible absorption spectroscopy and photoluminescence (PL) spectroscopy. The as-synthesized AgInS₂/ZnS NCs exhibited high PL quantum yields (40%) and long PL lifetimes (424.5 ns). Furthermore, the dynamic changes of the intracellular copper(II) levels in HeLa cells were monitored using the AgInS₂/ZnS NCs as fluorescent probes. The results showed that the AgInS₂/ZnS NCs as promising fluorescent probes can be used in the detection of intracellular copper ions in living cells.

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Article information

DOI: https://doi.org/10.1039/C3TB20638F
Article type: Paper
Submitted: 02 May 2013
Accepted: 24 Jun 2013
First published: 24 Jun 2013

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J. Mater. Chem. B, 2013,1, 4160-4165

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Microwave-assisted synthesis of highly luminescent AgInS₂/ZnS nanocrystals for dynamic intracellular Cu(II) detection

W. Xiong, G. Yang, X. Wu and J. Zhu, J. Mater. Chem. B, 2013, 1, 4160 DOI: 10.1039/C3TB20638F

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Journal of Materials Chemistry B