期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202308513
关键词
Antibacterial; Host-Guest Systems; Photochemistry; Photothermal Therapy; Supramolecular Chemistry
This study reports a supramolecular naphthalene diimide (NDI) radical anion with efficient NIR-II photothermal conversion for E. coli-responsive photothermal therapy. The supramolecular radical anion demonstrates excellent NIR-II photothermal antimicrobial activity and provides a new approach for constructing NIR-II photothermal agents and non-contact treatments for bacterial infections.
We report a supramolecular naphthalene diimide (NDI) radical anion with efficient NIR-II photothermal conversion for E. coli-responsive photothermal therapy. The supramolecular radical anion (NDI-2CB-[7])(center dot-), which is obtained from the E. coli-induced in situ reduction of NDI-2CB[7] neutral complex, formed by the host-guest interaction between an NDI derivative and cucurbit[7]uril (CB[7]), exhibits unexpectedly strong NIR-II absorption and remarkable photothermal conversion capacity in aqueous solution. The NIR-II absorption is caused by the self-assembly of NDI radical anions to form supramolecular dimer radicals in aqueous solution, which is supported by theoretically predicted spectra. The (NDI-2CB[7])(center dot-) demonstrates excellent NIR-II photothermal antimicrobial activity (> 99%). This work provides a new approach for constructing NIR-II photothermal agents and non-contact treatments for bacterial infections.
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