Several p-nitrobiphenyl derivatives show significantly higher photoreactivity compared to their p-nitrophenyl analogs, in addition to displaying a new acid-catalyzed photodecarboxylation mechanism in p-(p'-nitrophenyl)-phenylacetic acid.
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Organic photosensitizers (PSs) with long-lived charge-separated states (CSs) are optimal for converting photonic energy into reactive oxygen species (ROS) by maximizing the interaction between excited electrons and holes in subsequent photoreactions. However, the substantial consumption of oxygen by the singlet oxygen species produced by these PSs can significantly impede their anticancer efficacy, because of the hypoxia nature of solid tumors. Herein, we present a rational strategy for the structural modification of the well-known Fukuzumi acridinium salt (9-mesityl-10-methylacridinium ion) with long-lived CSs, by incorporating a methyl-substituted diphenylamine group (named MTPAA).
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The strong-coupling microcavity between excitons and photons facilitates efficient modulation and control of light, as well as precise manipulation of photon propagation properties. This phenomenon demonstrates significant potential for diverse applications in quantum information processing, optical sensing, and nonlinear optics. The anapole, as a specific type of captured state, allows for effective control over the electromagnetic field through appropriate distributions of current and charge, generating substantial localized effects within the field.
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Chem Pharm Bull (Tokyo)
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College of Pharmacy, Kinjo Gakuin University, 2-1723 Omori, Moriyama-ku, Nagoya 463-8521, Japan.
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