Fluorescence emission and photooxidation studies with 5,6- and 6,7-benzocoumarins and a 5,6-benzochromone under direct and concentrated sun light

Photocatalytic Activity of TiO2 Modified with Hexafluorometallates—Fine Tuning of Redox Properties by Redox-Innocent Anions

“…Singlet oxygen generation was followed by monitoring the progress of α-terpinene oxidation to ascaridole (Figure 2B). 27 The solution of α-terpinene (10 −3 mol dm −3 ) was prepared in methanol. Irradiation was carried out for 2 h. Determination of the changes in the concentration of the substrate has been done with high-performance liquid chromatography (HPLC) analysis (PerkinElmer, Flexar system) equipped with a UV−vis detector.…”

Vanadia-catalyzed solar photooxidation of aniline

“…3-5%). V 2 O 5 (E g = 2.8 eV) [3] is susceptible to photoactivation with visible light of wavelength less than 443 nm and here we report solar photocatalysis by V 2 O 5 ; reports on solar photocatalysis are few and preliminary [4][5][6]. An air-equilibrated solution of aniline yields azobenzene on irradiation at 365 nm with benzophenone sensitizing the oxidation [7][8][9].…”

Solar Photooxygenations for the Manufacturing of Fine Chemicals—Technologies and Applications

“…The photooxidation of α-terpinene ( 1 ) in the presence of a benzocoumarin sensitizer ( 3 ) and in concentrated sunlight has been reported by Karapire and co-workers ( Scheme 4 ) [ 82 ]. The authors used a small Fix Focus dish reactor with a cylindrical water-cooled Pyrex photoreactor vessel in its focal point ( Figure 3 ).…”