Fluorescent MoS2 Quantum Dots: Ultrasonic Preparation, Up-Conversion and Down-Conversion Bioimaging, and Photodynamic Therapy

被引：273

作者：

Dong, Haifeng ^{[1
]}

Tang, Songsong ^{[1
]}

Hao, Yansong ^{[1
]}

Yu, Haizhu ^{[1
]}

Dai, Wenhao ^{[1
]}

Zhao, Guifeng ^{[1
]}

Cao, Yu ^{[1
]}

Lu, Huiting ^{[2
]}

Zhang, Xueji ^{[1
]}

Ju, Huangxian ^{[3
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Res Ctr Bioengn & Sensing Technol, Beijing Key Lab Bioengn & Sensing Technol, Beijing 100083, Peoples R China

[2] Beijing Univ Aeronaut & Astronaut, Sch Chem & Environm, Dept Environm Sci & Engn, Beijing 100083, Peoples R China

[3] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Analyt Chem Life Sci, Nanjing 210093, Jiangsu, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 05期

基金：

中国国家自然科学基金;

关键词：

MoS2 quantum dots; ultrasonic preparation; up-conversion fluorescence; bioimaging; photodynamic therapy (PDT); ACTIVE EDGE SITES; MONOLAYER MOS2; THIN-LAYERS; NANOSHEETS; PHOTOLUMINESCENCE; EXFOLIATION; NANOPARTICLES; FABRICATION; EFFICIENT; PHASE;

D O I：

10.1021/acsami.5b10459

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Small size molybdenum disulfide (MoS2) quantum dots (QDs) with desired optical properties were controllably synthesized by using tetrabutylammonium-assisted ultrasonication of multilayered MoS2 powder via OH mediated chain-like Mo-S bond cleavage mode. The tunable up-bottom approach of precise fabrication of MoS2 QDs finally enables detailed experimental investigations, of their optical properties. The synthesized MoS2 QDs present good down conversion photoluminescence behaviors and exhibit remarkable up-conversion photoluminescence for bioimaging. The mechanism of the emerging photoluminescence was investigated. Furthermore, superior O-1(2) production ability of MoS2 QDs to commercial photosensitizer PpIX was demonstrated, which has great potential application for photodynamic therapy. These early affording results of tunable synthesis of MoS2 QDs with desired photo properties can lead to application in fields of biomedical and optoelectronics.

引用

页码：3107 / 3114

页数：8

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