Switchover from singlet oxygen to superoxide radical through a photoinduced two-step sequential energy transfer process.

ABSTRACT: The competitive nature of type II photosensitizers in the transfer of excitation energy for the generation of singlet oxygen (¹O₂) presents significant challenges in the design of type I photosensitizers to produce the superoxide anion radical (O₂^˙-). In this study, we present an efficient method for the direct transformation of type II photosensitizers into type I photosensitizers through the implementation of an artificial light-harvesting system (ALHSs) involving a two-step sequential energy transfer process. The designed supramolecular complex (DNPY-SBE-β-CD) not only has the ability to generate ¹O₂ as type II photosensitizers, but also demonstrates remarkable fluorescence properties in aqueous solution, which renders it

SUBMITTER: Yu S 

PROVIDER: S-EPMC10829035 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature