材料科学
光致发光
二硫化钼
量子点
光敏剂
光动力疗法
纳米技术
制作
荧光
超声
光电子学
光化学
化学工程
光学
有机化学
化学
复合材料
物理
工程类
病理
替代医学
医学
作者
Haifeng Dong,Songsong Tang,Yansong Hao,Haizhu Yu,Wenhao Dai,Guifeng Zhao,Yu Cao,Huiting Lu,Xueji Zhang,Huangxian Ju
标识
DOI:10.1021/acsami.5b10459
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 (1)O2 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.
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