NIR-II responsive coating for antibacterial synergistic effect of photothermal and chemodynamic therapy

被引：4

作者：

Chen, Zicheng ^{[1
]}

Chen, Lizhen ^{[1
]}

Wang, Fengqian ^{[1
]}

Cao, Aijian ^{[1
]}

Zhang, Jingxian ^{[1
]}

Huang, Langhuan ^{[1
]}

Chen, Huifang ^{[2
,3
]}

Tan, Shaozao ^{[1
]}

机构：

[1] Jinan Univ, Coll Chem & Mat Sci, Guangdong Engn & Technol Res Ctr Graphene like Ma, Dept Chem, Guangzhou 510632, Peoples R China

[2] Guangxi Normal Univ, Coll Chem & Pharm, Guilin 541004, Peoples R China

[3] GuangDong Lingnan Inst Technol, Guangzhou 510663, Peoples R China

来源：

PROGRESS IN ORGANIC COATINGS | 2025年 / 200卷

基金：

中国国家自然科学基金;

关键词：

Photothermal therapy; Chemodynamic therapy; Synergistic antibacterial; Coating; Titanium; GRAPHENE OXIDE; TITANIUM; NANOPARTICLES;

D O I：

10.1016/j.porgcoat.2024.108980

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Due to the advantages of non-invasive, low toxicity, high specificity and no drug resistance, photothermal therapy (PTT) and chemodynamic therapy (CDT) as an alternative to antibiotic therapy have been widely used in the treatment of implant infections. Herein, a coating which is synergistic antibacterial by photothermal therapy and chemodynamic therapy triggered by near-infrared (NIR) laser was successfully prepared on the surface of Ti sheet (TGC). First, TGC has strong absorption in the second near-infrared window (NIR-II, 1000-1700 nm) optical region and has good photothermal effect. Secondly, TGC produces & sdot;OH in a Fenton-like reaction under the action of NIR laser, killing floating bacteria. Under the irradiation of NIR-II laser, TGC exerts the photothermal/ chemodynamic effect, and has an efficient killing effect on Gram-negative E. coli and Gram-positive S. aureus, and effectively inhibits the further reproduction of bacteria to form biofilms. This combined photoresponsive/Fentonlike multimodal antimicrobial coating shows advantages in the field of implant anti-infection.

引用

页数：13

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