Silver Nanoparticle-Mediated Synthesis of Fluorescent Thiolated Gold Nanoclusters

A new strategy using silver nanoparticles (Ag NPs) to synthesize thiolated Au NCs is demonstrated. The quasi-spherical Ag NPs serve as a platform, functioning as a reducing agent for Au (III) and attracting capping ligands to the surface of the Ag NPs. Glutathione disulfide (GSSG) and dithiothreitol...

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Autores principales:	Cheng-Yeh Chang, Tzu-Hsien Tseng, Bo-Ru Chen, Yi-Ru Wu, Cheng-Liang Huang, Jui-Chang Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	electrophoretic mobility quantum yield capping ligands nanoparticles nanoclusters Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/627d5eb701254c0bb25e340b3677a44b
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spelling	oai:doaj.org-article:627d5eb701254c0bb25e340b3677a44b2021-11-25T18:30:10ZSilver Nanoparticle-Mediated Synthesis of Fluorescent Thiolated Gold Nanoclusters10.3390/nano111128352079-4991https://doaj.org/article/627d5eb701254c0bb25e340b3677a44b2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2835https://doaj.org/toc/2079-4991A new strategy using silver nanoparticles (Ag NPs) to synthesize thiolated Au NCs is demonstrated. The quasi-spherical Ag NPs serve as a platform, functioning as a reducing agent for Au (III) and attracting capping ligands to the surface of the Ag NPs. Glutathione disulfide (GSSG) and dithiothreitol (DTT) were used as capping ligands to synthesize thiolated Au NCs (glutathione-Au NCs and DTT-Au NCs). The glutathione-Au NCs and DTT-Au NCs showed red color luminance with similar emission wavelengths (630 nm) at an excitation wavelength of 354 nm. The quantum yields of the glutathione-Au NCs and DTT-Au NCs were measured to be 7.3% and 7.0%, respectively. An electrophoretic mobility assay showed that the glutathione-Au NCs moved toward the anode, while the DTT-Au NCs were not mobile under the electric field, suggesting that the total net charge of the thiolated Au NCs is determined by the charges on the capping ligands. The detection of the K<sub>SV</sub> values, 26 M<sup>−1</sup> and 0 M<sup>−1</sup>, respectively, revealed that glutathione-Au NCs are much more accessible to an aqueous environment than DTT-Au NCs.Cheng-Yeh ChangTzu-Hsien TsengBo-Ru ChenYi-Ru WuCheng-Liang HuangJui-Chang ChenMDPI AGarticleelectrophoretic mobilityquantum yieldcapping ligandsnanoparticlesnanoclustersChemistryQD1-999ENNanomaterials, Vol 11, Iss 2835, p 2835 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	electrophoretic mobility quantum yield capping ligands nanoparticles nanoclusters Chemistry QD1-999
spellingShingle	electrophoretic mobility quantum yield capping ligands nanoparticles nanoclusters Chemistry QD1-999 Cheng-Yeh Chang Tzu-Hsien Tseng Bo-Ru Chen Yi-Ru Wu Cheng-Liang Huang Jui-Chang Chen Silver Nanoparticle-Mediated Synthesis of Fluorescent Thiolated Gold Nanoclusters
description	A new strategy using silver nanoparticles (Ag NPs) to synthesize thiolated Au NCs is demonstrated. The quasi-spherical Ag NPs serve as a platform, functioning as a reducing agent for Au (III) and attracting capping ligands to the surface of the Ag NPs. Glutathione disulfide (GSSG) and dithiothreitol (DTT) were used as capping ligands to synthesize thiolated Au NCs (glutathione-Au NCs and DTT-Au NCs). The glutathione-Au NCs and DTT-Au NCs showed red color luminance with similar emission wavelengths (630 nm) at an excitation wavelength of 354 nm. The quantum yields of the glutathione-Au NCs and DTT-Au NCs were measured to be 7.3% and 7.0%, respectively. An electrophoretic mobility assay showed that the glutathione-Au NCs moved toward the anode, while the DTT-Au NCs were not mobile under the electric field, suggesting that the total net charge of the thiolated Au NCs is determined by the charges on the capping ligands. The detection of the K<sub>SV</sub> values, 26 M<sup>−1</sup> and 0 M<sup>−1</sup>, respectively, revealed that glutathione-Au NCs are much more accessible to an aqueous environment than DTT-Au NCs.
format	article
author	Cheng-Yeh Chang Tzu-Hsien Tseng Bo-Ru Chen Yi-Ru Wu Cheng-Liang Huang Jui-Chang Chen
author_facet	Cheng-Yeh Chang Tzu-Hsien Tseng Bo-Ru Chen Yi-Ru Wu Cheng-Liang Huang Jui-Chang Chen
author_sort	Cheng-Yeh Chang
title	Silver Nanoparticle-Mediated Synthesis of Fluorescent Thiolated Gold Nanoclusters
title_short	Silver Nanoparticle-Mediated Synthesis of Fluorescent Thiolated Gold Nanoclusters
title_full	Silver Nanoparticle-Mediated Synthesis of Fluorescent Thiolated Gold Nanoclusters
title_fullStr	Silver Nanoparticle-Mediated Synthesis of Fluorescent Thiolated Gold Nanoclusters
title_full_unstemmed	Silver Nanoparticle-Mediated Synthesis of Fluorescent Thiolated Gold Nanoclusters
title_sort	silver nanoparticle-mediated synthesis of fluorescent thiolated gold nanoclusters
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/627d5eb701254c0bb25e340b3677a44b
work_keys_str_mv	AT chengyehchang silvernanoparticlemediatedsynthesisoffluorescentthiolatedgoldnanoclusters AT tzuhsientseng silvernanoparticlemediatedsynthesisoffluorescentthiolatedgoldnanoclusters AT boruchen silvernanoparticlemediatedsynthesisoffluorescentthiolatedgoldnanoclusters AT yiruwu silvernanoparticlemediatedsynthesisoffluorescentthiolatedgoldnanoclusters AT chenglianghuang silvernanoparticlemediatedsynthesisoffluorescentthiolatedgoldnanoclusters AT juichangchen silvernanoparticlemediatedsynthesisoffluorescentthiolatedgoldnanoclusters
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Silver Nanoparticle-Mediated Synthesis of Fluorescent Thiolated Gold Nanoclusters

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