Development of water-soluble phenazine-2,3-diol-based photosensitizers for singlet oxygen generation

Abstract

Phenazine-2,3-diol-based dyes, KY-1Na and KY-2Na bearing one and two carboxylic acid sodium salts, respectively, have been newly developed as a water-soluble photosensitizer (PS) possessing the ability to generate singlet oxygen...

Development of phenazine-2,3-diol-based photosensitizers: effect of substitution of the cyano group for the nitro group on singlet oxygen generation

“…12 Meanwhile, halogen-atom-free PSs such as a family of heteroanthracenes have been extensively studied. 7,8,10,13 Indeed, methylene blue ( MB ) without halogen atoms is commonly used not only as a standard PS for determining the Φ Δ values of the other PSs but also as a medication to treat methemoglobinemia. 14 In addition, for efficient use in water purification systems and PDT, PSs are required to have photoabsorption in the longer wavelength region, that is, the visible light region (400–800 nm) and phototherapeutic window (650–900 nm).…”