Blue‐Emitting Electron‐Donor/Acceptor Dyads for Naked‐Eye Fluorescence Detection of Singlet Oxygen. Issue 7 (22nd May 2017)

• Record Type: Journal Article
• Authors: Kohara, Reiko; Yuyama, Ken‐ichi; Shigeri, Yasushi; Biju, Vasudevanpillai
• Is Part Of: ChemPhotoChem. Volume 1:Issue 7(2017)
• Page Start: 299
• Page End: 303
• Publication Date: 2017-05-22
• Subjects: cycloaddition -- electron transfer -- fluorescence sensor -- photosensitization -- singlet oxygen; Photochemistry -- Periodicals; Periodicals; Electronic journals; 541.35
• DOI: 10.1002/cptc.201700046
• Languages: English
• ISSNs: 2367-0932

Abstract

Abstract: Singlet oxygen ( 1 O2 ) and other reactive oxygen species receive great attention in chemistry and biology. Fluorescence sensing is one of the most promising and widely used techniques in the detection of 1 O2 . Nonetheless, the selectivity and sensitivity of 1 O2 detection are highly depended on the structure, absorption band, stability and emission color of the fluorogenic sensor. We introduce novel and simple intramolecular electron donor–acceptor dyads that selectively and sensitively emit intense blue light in response to 1 O2 . The systematic changes in the emission intensity of the sensors allow detection of 1 O2 by the naked‐eye. Furthermore, the blue‐shifted absorption and blue emission bands of the sensors ensure selective excitation of common photosensitizers using visible light. The sensors are synthesized by a simple and single‐step reaction, which when combined with the exceptionally high stability of the sensors against visible‐light irradiation, makes them promising tools for 1 O2 detection in chemistry, biochemistry, materials science and the life sciences. Abstract : Sensing by sensitization : Blue‐shifted absorption and blue emission of simple intramolecular electron donor–acceptor dyads allow the stable detection of singlet oxygen without any interfere from common photosensitizers or lasers. The sensors exhibit exceptionally high stability against visible‐light irradiation.