Spectral, Luminescent, and Photochemical Properties of Derivatives of Hydrogenated Furo- and Thienoquinolines

New derivatives of hydrogenated furo- and thioenoquinolines have been synthesized, and their spectral and luminescent properties and photochemical transformations have been investigated. The triplet origin of the short-lived states upon photoexcitation was confirmed by the flash photolysis technique, and spectral and kinetic parameters of the generated triplet states and aminyl radicals were obtained for the synthesized furohydroquinolines. Processes with participation of the triplet state of the compounds under study are important for use in photodermatology.