title: Synthesis of coumarin/pyrrole-fused heterocycles and their photochemical and redox-switching properties.
abstract: Two coumarin/pyrrole-fused heterocycles were synthesized to investigate their photochemical and redox-switching properties. Photooxidation of the colorless diphenyl-substituted pyrrolocoumarin resulted in a distinct change to red and a sharp decrease in fluorescence intensity. The photooxidized product can be swiftly reverted to the original form by NaCNBH3 reduction or hydrogenation.
authors.affiliation: Department of Chemistry, Tunghai University, No. 181, Section 3, Taichung Port Road, Taichung City 40704, Taiwan, Republic of China.
authors.forename: Chi-Hui
authors.initials: CH
authors.lastname: Lin
authors.forename: Ding-Yah
authors.initials: DY
authors.lastname: Yang
mesh_terms: D003374:Coumarins / Q000138:chemical synthesis* / Q000737:chemistry; D006571:Heterocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D006865:Hydrogenation; D010084:Oxidation-Reduction; D055668:Photochemical Processes; D011758:Pyrroles / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D003374:Coumarins; D006571:Heterocyclic Compounds; D011758:Pyrroles; C030123:coumarin