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      Photothermal bactericidal surfaces: killing bacteria using light instead of biocides

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          Abstract

          Recent developments of photothermal bactericidal surfaces based on immobilized photothermal agents to kill bacteria through hyperthermia effects are reviewed.

          Abstract

          Endowing the surfaces of synthetic materials with bactericidal activity is a direct and effective way to prevent bacterial colonization and biofilm formation, solving the related serious problems such as contamination, infection and biofouling. Conventional bactericidal surfaces are usually based on biocidal agents such as antibiotics to kill attached bacteria; however, such surfaces have inherent limitations from their respective biocidal agents and most of them become less effective against the so-called “super bacteria” with multidrug-resistance. In recent years, photothermal bactericidal surfaces have become a promising alternative for combating surface-attached bacteria. These surfaces rely on immobilized photothermal agents, which can convert light energy into thermal energy to effectively eliminate bacteria through various hyperthermia effects, showing several advantages including broad-spectrum sterilization ability, no drug resistance and few side effects. In this review, we highlight the recent development of these photothermal bactericidal surfaces, which are categorized into three types according to the photothermal agents. Multi-functional photothermal bactericidal surfaces with either integrated synergistic killing mechanisms or capability to switch function between killing bacteria and releasing bacteria are also introduced. A brief perspective is finally presented on the directions that show promise for the future.

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          ANSI Z136.1-2000: American National Standard for Safe Use of Lasers

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            Author and article information

            Contributors
            Journal
            BSICCH
            Biomaterials Science
            Biomater. Sci.
            Royal Society of Chemistry (RSC)
            2047-4830
            2047-4849
            January 5 2021
            2021
            : 9
            : 1
            : 10-22
            Affiliations
            [1 ]State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
            [2 ]College of Chemistry
            [3 ]Chemical Engineering and Materials Science
            [4 ]Soochow University
            [5 ]Suzhou
            [6 ]Institute for Cardiovascular Science and Department of Cardiovascular Surgery of the First Affiliated Hospital
            [7 ]P. R. China
            Article
            10.1039/D0BM00617C
            32525140
            008a0f39-ff28-4ad7-801d-31dd79d33f1a
            © 2021

            http://rsc.li/journals-terms-of-use

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