| Literature DB >> 26761391 |
Haifeng Dong1, Songsong Tang1, Yansong Hao1, Haizhu Yu1, Wenhao Dai1, Guifeng Zhao1, Yu Cao1, Huiting Lu2, Xueji Zhang1, Huangxian Ju3.
Abstract
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.Entities:
Keywords: MoS2 quantum dots; bioimaging; photodynamic therapy (PDT); ultrasonic preparation; up-conversion fluorescence
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Year: 2016 PMID： 26761391 DOI： 10.1021/acsami.5b10459
Source DB: PubMed Journal: ACS Appl Mater Interfaces ISSN： 1944-8244 Impact factor: 9.229