NDLI: Furthering the chemosensing of silver nanoclusters for ion detection

Content Provider	Royal Society of Chemistry (RSC)
Author	Liu, Xianhu Guan, Lingmei Huang, Saipeng Luo, Zhixun Ding, Weihua
Copyright Year	2015
Abstract	Ligand-protected metal nanoclusters (NCs) having hydrodynamic diameters and fluorescent properties have reasonable potential for ion detection and bio-imaging applications by taking advantage of their smaller sizes and degradability as compared with larger nanoparticles. By controlling the pH value, here we have synthesized a fluorescent silver nanocluster, Ag–glutathione, which is found to be a versatile chemosensor operative for the detection of both manganese (Mn2+) and iodine (I−) ions. Mn2+ and I− are further distinguished by the ratiometric absorption spectrometry method. Care was taken for sufficient spectral analyses, based upon which we have fully demonstrated the chemosensing mechanisms of Ag@glutathione (Ag@SG) NCs applied in ion detection. Having expounded this issue, we further investigated the potential application of Ag@SG NCs in bio-imaging. It is interesting to find that the as-prepared Ag@SG NCs are nontoxic and available for fluorescence imaging of MCF-7 cells, with on/off alternation of fluorescence emission in the presence of Mn2+ or I− ions. The low cytotoxicity, good penetrability and on/off fluorescence property of Ag@SG NCs in MCF-7 cells suggest promising biological applications.
Starting Page	64138
Ending Page	64145
Page Count	8
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	5
Issue Number	79
Journal	RSC Advances
DOI	10.1039/c5ra11124b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Absorption spectroscopy MCF-7 Fluorescence Ion Cytotoxicity Chemoreceptor Manganese Iodine Glutathione
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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Supporting Information Furthering the Chemosensing of Silver Nanoclusters for Ions Detection

Novel fluorescent chemosensing of CN⁻ anions with nanomolar detection using the Zn²⁺–isonicotinohydrazide metal complex

Turn-on fluorescence detection of cysteine with glutathione protected silver nanoclusters

A turn-on fluorescein spirolactam derivative as a high selective fluorescence probe for detection of silver ion(i) in water

Glutathione-protected silver nanoclusters for sensing trace-level Hg²⁺ in a wide pH range

Detection of large deletion in human BRCA1 gene in human breast carcinoma MCF-7 cells by using DNA-Silver Nanoclusters

Fluorescent detection of silver ions in water with organic nano-aggregates

A label-free aptasensor for the detection of ATP based on turn-on fluorescence DNA-templated silver nanoclusters.

Fluorescence detection of glutathione reductase activity based on deoxyribonucleic acid-templated silver nanoclusters.

Furthering the chemosensing of silver nanoclusters for ion detection

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Supporting Information Furthering the Chemosensing of Silver Nanoclusters for Ions Detection

Novel fluorescent chemosensing of CN− anions with nanomolar detection using the Zn2+–isonicotinohydrazide metal complex

Turn-on fluorescence detection of cysteine with glutathione protected silver nanoclusters

A turn-on fluorescein spirolactam derivative as a high selective fluorescence probe for detection of silver ion(i) in water

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Detection of large deletion in human BRCA1 gene in human breast carcinoma MCF-7 cells by using DNA-Silver Nanoclusters

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A label-free aptasensor for the detection of ATP based on turn-on fluorescence DNA-templated silver nanoclusters.

Fluorescence detection of glutathione reductase activity based on deoxyribonucleic acid-templated silver nanoclusters.

Furthering the chemosensing of silver nanoclusters for ion detection

Novel fluorescent chemosensing of CN⁻ anions with nanomolar detection using the Zn²⁺–isonicotinohydrazide metal complex

Glutathione-protected silver nanoclusters for sensing trace-level Hg²⁺ in a wide pH range