超分子化学
单线态氧
金刚烷
环糊精
抗菌活性
化学
膜
插层(化学)
抗菌剂
组合化学
光动力疗法
超分子组装
纳米技术
材料科学
细菌
有机化学
分子
氧气
生物化学
生物
遗传学
作者
Xiujuan J. Dai,Bing Zhang,Qilin Yu,Yu Liu
出处
期刊:ACS applied bio materials
[American Chemical Society]
日期:2021-11-16
卷期号:4 (12): 8536-8542
被引量:6
标识
DOI:10.1021/acsabm.1c01018
摘要
Supramolecular antimicrobial materials based on synthetic macrocycles have recently aroused enormous interests due to their controllable and effective antibacterial treatment. Herein, a multicharged supramolecular assembly was fabricated employing the moderate host-guest interaction between hexa-adamantane-appended ruthenium polypyridyl (Ru2) and polycationic cyclodextrin (CD-QAS) in water. The positively multicharged feature of supramolecular assembly could remarkably enhance the specific intercalation and accumulation in negatively charged bacteria membrane leading to the physical membrane damage. Subsequently, the assembly could efficiently initiate the significant generation of singlet oxygen (1O2) in situ when irradiated with white light thus exhibiting a highly efficient antibacterial capability. Significantly, antibacterial experiments indicated that Ru2/CD-QAS displayed less effect on suppressing the growth of E. coli only about 25% in the absence of light while they exhibited excellent killing efficiency more than 99% toward E. coli under light irradiation. This work provides a simple approach for constructing supramolecular antimicrobial materials for synergistic photodynamic antibacteria.
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