卟啉
可见光谱
光热治疗
金属化
材料科学
光化学
过氧化氢
灭菌(经济)
兴奋剂
分解水
纳米技术
金属
化学工程
光电子学
化学
光催化
催化作用
有机化学
工程类
货币经济学
经济
外汇市场
冶金
外汇
作者
Yu Zhao,Mengge Yuan,Haowei Yang,Jie Li,Yulong Ying,Jinhua Li,Weihao Wang,Sheng Wang
出处
期刊:Small
[Wiley]
日期:2023-09-04
卷期号:20 (2)
被引量:5
标识
DOI:10.1002/smll.202305189
摘要
Abstract Traditional metal‐organic frameworks (MOFs) based micro/nanomotors (MOFtors) can achieve three‐dimensional (3D) motion mainly depending on noble metal (e.g., Pt), toxic fuels (e.g., hydrogen peroxide), and surfactants, or under external magnetic fields. In this study, light‐driven MOFtors are constructed based on PCN‐224(H) and regulated their photothermal and photochemical properties responding to the light of different wavelengths through porphyrin metalation. The resulting PCN‐224(Fe) MOFtors presented a strong 3D motion at a maximum speed of 1234.9 ± 367.5 µm s −1 under visible light due to the various gradient fields by the photothermal and photochemical effects. Such MOFtors exhibit excellent water sterilization performance. Under optimal conditions, the PCN‐224(Cu) MOFtors presented the best antibacterial performance of 99.4%, which improved by 23.4% compared to its static counterpart and 43.7% compared to static PCN‐224(H). The underlying mechanism demonstrates that metal doping could increase the production of reactive oxygen species (ROS) and result in a more positive surface charge under light, which are short‐distance effective sterilizing ingredients. Furthermore, the motion of MOFtors appears very important to extend the short‐distance effective sterilization and thus synergistically improve the antibacterial performance. This work provides a new idea for preparing and developing light‐driven MOFtors with multi‐responsive properties.
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