4.7 Article

Synthesis of carbon dots from Hypocrella bambusae for bimodel fluorescence/photoacoustic imaging-guided synergistic photodynamic/photothermal therapy of cancer

Journal

JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 526, Issue -, Pages 302-311

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.05.005

Keywords

Carbon dot; Photodynamic therapy; Photothermal therapy

Funding

  1. National Natural Science Foundation of China [51472252, 51572269, 61720106014]
  2. Strategic Priority Research Program of the Chinese Academy of Sciences [XDB17000000]

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As phototheranostic agents, carbon dots (CDs), have recently drawn considerable attention due to their excellent physicochemical properties. However, the complex synthetic route and high-cost of CDs greatly limit their practical application. To address this issue, given their nearly infinite supply from nature, Hypocrella bambusae is used as the precursor for the preparation of CDs in this study. The obtained Hypocrella bambusae CDs (HBCDs) possess good water solubility, broad absorption (350-800 nm), red-light emission (maximum peak at 610 nm), and low biotoxicity. Moreover, HBCDs can highly generate O-1(2) (0.38) and heat (27.6%) under 635 nm laser irradiation. These excellent properties of HBCDs capacitate them to be utilized for bimodal fluorescence/photoacoustic imaging-guided synergistic photodynamic therapy (PDT)/photothermal therapy (PTT). This work provides a new candidate for tumor treatment with the combination of PDT and PIT, and explores a novel approach for the preparation of CD-based phototheranostic agents with natural biomass as raw carbon sources. (C) 2018 Elsevier Inc. All rights reserved.

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