Issue 24, 2023

Promoting photothermal antibacterial activity through an excited-state intramolecular proton transfer process

Abstract

The construction of an efficient photothermal antibacterial platform is a promising strategy for the treatment of drug-resistant bacterial infections. Herein, through the introduction of excited-state intramolecular proton transfer to promote the photothermal effect, N-(2,4-dihydroxybenzylidene)-4-aminophenol (DOA)–polyvinyl alcohol (PVA) systems (DPVA) can reach 55 °C within 10 s under irradiation. They show superior antibacterial behavior against drug-resistant bacteria and a therapeutic effect on infected skin wounds with only 100 s of irradiation, much faster than those of reported photothermal materials (5–10 min). This work provides a convenient approach to fabricate broad-spectrum antibacterial wound dressings for treating bacteria-infected wounds, greatly contributing to the design and applications of photothermal antibacterial platforms.

Graphical abstract: Promoting photothermal antibacterial activity through an excited-state intramolecular proton transfer process

Supplementary files

Article information

Article type
Paper
Submitted
07 12 2022
Accepted
08 2 2023
First published
08 2 2023

J. Mater. Chem. B, 2023,11, 5537-5543

Promoting photothermal antibacterial activity through an excited-state intramolecular proton transfer process

W. Yao, T. Deng, A. Huang, Y. Zhang, Q. Li and Z. Li, J. Mater. Chem. B, 2023, 11, 5537 DOI: 10.1039/D2TB02664C

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