Issue 35, 2021

Carambola-like Bi2Te3 superstructures with enhanced photoabsorption for highly efficient photothermal therapy in the second near-infrared biowindow

Abstract

Photothermal therapy (PTT) stimulated by light in the second near-infrared (NIR-II) biowindow shows great superiorities in the penetration ability of tissue and maximum permissible exposure (MPE). Exploring new photothermal agents with good optical absorbance in the NIR-II region is highly desirable for efficient cancer therapy. Herein, we successfully prepare carambola-like bismuth telluride (Bi2Te3) superstructures modified with PEGylated phospholipid (Bi2Te3@PEG) for CT imaging-guided PTT in the NIR-II biowindow. Attributing to their superstructures, Bi2Te3@PEG exhibited enhanced photoabsorption with higher photothermal conversion efficiency (55.3% for 1064 nm) compared with that of Bi2Te3 nanoparticles. Furthermore, the good X-ray attenuation capacity of Bi endows Bi2Te3@PEG with an outstanding performance as computed tomography (CT) contrast agents. Bi2Te3@PEG superstructures have been confirmed to effectively eliminate tumor in vitro and in vivo with negligible long-term toxicities, offering them great potential to act as theranostic platforms for cancer diagnosis and treatment.

Graphical abstract: Carambola-like Bi2Te3 superstructures with enhanced photoabsorption for highly efficient photothermal therapy in the second near-infrared biowindow

Supplementary files

Article information

Article type
Paper
Submitted
30 mar 2021
Accepted
24 mai 2021
First published
25 mai 2021

J. Mater. Chem. B, 2021,9, 7271-7277

Carambola-like Bi2Te3 superstructures with enhanced photoabsorption for highly efficient photothermal therapy in the second near-infrared biowindow

Y. Zhao, Y. Liu, Q. Wang, J. Liu, S. Zhang, T. Zhang, D. Wang, Y. Wang, L. Jin and H. Zhang, J. Mater. Chem. B, 2021, 9, 7271 DOI: 10.1039/D1TB00694K

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