Influence of doping ion, capping agent and pH on the fluorescence properties of zinc sulfide quantum dots: Sensing of Cu2+ and Hg2+ ions and their biocompatibility with cancer and fungal cells

被引：35

作者：

Desai, Mittal L. ^{[1
]}

Deshmukh, Balaji ^{[2
]}

Lenka, Nibedita ^{[2
]}

Haran, Varun ^{[2
]}

Jha, Sanjay ^{[3
]}

Basu, Hirakendu ^{[4
]}

Singhal, Rakesh Kumar ^{[4
]}

Sharma, P. K. ^{[4
]}

Kailasa, Suresh Kumar ^{[1
]}

Kim, Ki-Hyun ^{[5
]}

机构：

[1] SV Natl Inst Technol, Dept Appl Chem, Surat 395007, India

[2] Pune Univ Campus, NCCS Complex, Natl Ctr Cell Sci, Pune 411007, Maharashtra, India

[3] Navsari Agr Univ, Gujarat Agr Biotechnol Inst, Surat 395007, India

[4] Bhabha Atom Res Ctr, Analyt Chem Div, Mumbai 400085, India

[5] Hanyang Univ, Dept Civil & Environm Engn, Atmospher Environm & Air Qual Management Lab, 222 Wangsimni Ro, Seoul 04763, South Korea

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2019年 / 210卷

关键词：

GSH-Mn2+-ZnS QDs; Cu2+; Hg2+; Cancer cells; Fungal cells; UV-visible and fluorescence spectroscopy; ROOM-TEMPERATURE PHOSPHORESCENCE; DOPED ZNSE; COLORIMETRIC DETECTION; GOLD NANOPARTICLES; AQUEOUS SYNTHESIS; HEAVY-METALS; WATER; CADMIUM; MERCURY; PROBE;

D O I：

10.1016/j.saa.2018.11.027

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Herein, a facile one-pot synthetic method was explored for the fabrication of glutathione capped Mn2+ doped-zinc sulphide quantum dots (GSH-Mn2+-ZnS QDs) for both fluorescent detection of Cu2+ and Hg2+ ions and for fluorescence imaging of two cancer (RIN5F and MDAMB231) and fungal (Rhizopus oryzae) cells. Particularly, doping of Mn2+ into ZnS QDs nanocrystal structure resulted a great improvement in the fluorescence properties of ZnS QDs. The emission peak of undoped ZnS QDs was found at 447 nm, which is due to the large number of surface defects in the ZnS QDs nanostructures. Under identical conditions, there is a good linear relationship between the quenching of fluorescence intensity and analytes (Cu2+ and Hg2+ ions) concentration in the range of 0.005 to 0.2 mM and of 0.025 to 0.4 mM for Cu2+ and Hg2+ ions, respectively. The GSH-Mn2+-ZnS QDs exhibit least cytotoxicity against RIN5F and MDAMB231 cells, demonstrating the multifunctional applications in sensing of metal ions and biocompatibility towards cancer (RIN5F and MDAMB231) and fungal (Rhizopus oryzae) cells. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：212 / 221

页数：10

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