Water-Soluble Monolayer Molybdenum Disulfide Quantum Dots with Upconversion Fluorescence

被引:123
作者
Huang, Hao [1 ]
Du, Cuicui [1 ]
Shi, Hongyan [1 ]
Feng, Xun [1 ]
Li, Jin [1 ]
Tan, Yanlei [1 ]
Song, Wenbo [1 ]
机构
[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China
基金
中国国家自然科学基金;
关键词
THIN-FILM; MOS2; GRAPHENE; NANOSHEETS; EXFOLIATION; FABRICATION; NITRIDE; LAYERS;
D O I
10.1002/ppsc.201400101
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Uniform water-soluble monolayer MoS2 quantum dots (MQDs) with lateral sizes of approximate to 2.1 nm, a clearly zigzag-terminated edge, and a hexagonal lattice structure are achieved using ammonium molybdate, thiourea, and N-acetyl-L-cysteine (NAC) as precursors and the capping reagent in a facile one-pot hydrothermal approach. MQDs have good dispersity and high stability in aqueous suspension and exhibit a significantly larger direct bandgap (3.96 eV) compared to monolayer MoS2 nanosheets (1.89 eV). Pronounced blue-shifts in the wavelengths of both the excitonic absorption and intrinsic state emission with activated strong luminescence at room temperature beyond monolayer MoS2 nanosheets is demonstrated. Unusual upconversion photoluminescence is also observed and is caused by two successive transfers of energy from the near-infrared (NIR) absorption generated by the NAC capping reagent to the hexagonal structure of MQDs. Additional optical properties of MQDs may provide numerous exciting technological applications. Here, MQDs are demonstrated as a highly selective fluorescent reagent for detecting tetracycline hydrochloride under UV and NIR irradiation.
引用
收藏
页码:72 / 79
页数:8
相关论文
共 50 条
  • [31] Water-soluble MoS2 quantum dots for facile and sensitive fluorescence sensing of alkaline phosphatase activity in serum and live cells based on the inner filter effect
    Zhong, Yaping
    Xue, Fengfeng
    Wei, Peng
    Li, Ruohan
    Cao, Chunyan
    Yi, Tao
    [J]. NANOSCALE, 2018, 10 (45) : 21298 - 21306
  • [32] Luminescent Properties of a Water-Soluble Conjugated Polymer Incorporating Graphene-Oxide Quantum Dots
    Li, Penglei
    Di Stasio, Francesco
    Eda, Goki
    Fenwick, Oliver
    McDonnell, Shane O.
    Anderson, Harry L.
    Chhowalla, Manish
    Cacialli, Franco
    [J]. CHEMPHYSCHEM, 2015, 16 (06) : 1258 - 1262
  • [33] One-pot solvothermal synthesis of water-soluble boron nitride nanosheets and fluorescent boron nitride quantum dots
    Liu, Qingqing
    Hu, Chaofan
    Wang, Xiaomin
    [J]. MATERIALS LETTERS, 2019, 234 : 306 - 310
  • [34] Water-soluble boron carbon oxynitride dots with excellent solid-state fluorescence and ultralong room-temperature phosphorescence
    Han, Shenghui
    Lian, Gang
    Zeng, Xiaoliang
    Cao, Zhaozhen
    Wang, Qilong
    Cui, Deliang
    Wong, Ching-Ping
    [J]. NANO RESEARCH, 2020, 13 (12) : 3261 - 3267
  • [35] Water soluble reduced graphene oxide as an efficient photoluminescence quencher for semiconductor quantum dots
    Tang, Haiping
    Sun, Luwei
    He, Haiping
    [J]. OPTICAL MATERIALS, 2017, 64 : 9 - 12
  • [36] Molybdenum Disulfide Quantum Dots as a Photoluminescence Sensing Platform for 2,4,6-Trinitrophenol Detection
    Wang, Yong
    Ni, Yongnian
    [J]. ANALYTICAL CHEMISTRY, 2014, 86 (15) : 7463 - 7470
  • [37] Water-soluble non-conjugated polymer dots with strong green fluorescence for sensitive detection of organophosphate pesticides
    Zhang, Chunxian
    Li, Shuai
    Duan, Zhiqiang
    Li, Qin
    Zhao, Mengxuan
    Chen, Yulong
    Zhai, Xiurong
    Mao, Guojiang
    Wang, Hua
    [J]. ANALYTICA CHIMICA ACTA, 2022, 1206
  • [38] Rapid and ratiometric fluorescent detection of hypochlorite by glutathione functionalized molybdenum disulfide quantum dots
    Zhong, Yaping
    Guo, Lijuan
    Zou, Yibiao
    Chen, Yu
    Lu, Zhentan
    Wang, Dong
    [J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2023, 295
  • [39] Copper nanoclusters modified molybdenum disulfide quantum dots probe for sensitive detection of tetracycline
    Tang, Xiaoxue
    Chi, Haonan
    Jia, Zijian
    Lv, Jingxue
    Lv, Yuguang
    Wu, Jiang
    [J]. SENSING AND BIO-SENSING RESEARCH, 2024, 43
  • [40] Exceptional photoconductivity of poly (3-hexylthiophene) fibers through in situ encapsulation of molybdenum disulfide quantum dots
    Nair, Vishnu
    Kumar, Anil
    Subramaniam, Chandramouli
    [J]. NANOSCALE, 2018, 10 (22) : 10395 - 10402