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- Title
Solvent-Free Visible Light Photocatalytic Oxidation Processes Mediated by Transparent Films of an Imine-Based Organic Polymer.
- Authors
Sánchez-Fuente, Miguel; Jimenez-Almarza, Alicia; Alemán, José; Mas-Ballesté, Rubén
- Abstract
Reaction between concentrated solutions of phenotiazine containing trialdehyde building block 4,4′,4″-(10-phenothiazine-3,7,10-triyl)tribenzaldehyde and (1R,2R)-cyclohexane-1,2-diamine results in the formation of a yellow transparent film. Exhaustive characterization of this material indicates that it is the result of the assembly of a linear polymer resulting from the linking of imine-based macrocycles. Phenotiazine units confer to this plastic the optical properties characteristic of photocatalytic materials. The transparency of the obtained material enabled the performance of solvent-free photocatalytic processes. This concept is illustrated by the oxidation of liquid organic sulfides, which can be performed in a recyclable manner. According to selective quenching experiments, such processes are the result of the energy transfer to oxygen molecule, generating singlet oxygen that is able to activate the sulfide molecules directly.
- Subjects
PHOTOCATALYTIC oxidation; VISIBLE spectra; POLYMERS; POLYMER films; REACTIVE oxygen species; ENERGY transfer; OPTICAL properties; LINEAR polymers
- Publication
Catalysts (2073-4344), 2021, Vol 11, Issue 12, p1426
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal11121426