Acetyl acetonate-stabilized Mn2+ :CdS quantum dots: Aqueous synthesis and reversible fluorescence tuned by redox reaction

被引：3

作者：

Gui, Rijun ^{[1
]}

Wan, Ajun ^{[1
]}

Jin, Hui ^{[1
]}

Li, Huili ^{[2
]}

Zhou, Chixing ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Pharm, Shanghai 200240, Peoples R China

来源：

MATERIALS LETTERS | 2013年 / 98卷

基金：

中国国家自然科学基金;

关键词：

Quantum dots; Luminescence; Oxidation; Reduction; Nanoparticles; OPTICAL-PROPERTIES; NANOCRYSTAL EMITTERS; PHOTOLUMINESCENCE;

D O I：

10.1016/j.matlet.2013.02.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this, article, Mn2+-doped CdS quantum dots (QDs) were synthesized using acetyl acetonate as a stabilizing agent in aqueous media. The as-prepared QDs exhibited reversible photoluminescence (PL) via partial oxidation of the emitting Mn species and subsequent reduction of the oxidized form. Treatment of the QDs with K2S2O8 as oxidizing agents led to decrease in PL emission intensity due to Mn2+ ((4)T(1)(-6)A(1)), and subsequent addition of NaBH4 into K2S2O8-treated QDs resulted in PL recovery. The PL changes of the QDs were almost fully reversible after undergoing repeated oxidizing-reducing cycles, indicating their potential applications as versatile PL probes and labels for biological assays, imaging of cells and tissues in vivo, especially for the detection of redox reactions. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：190 / 193

页数：4

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