title: Reduction of dipyrido-[3,2-a:2',3'-c]-phenazine (dppz) by photolysis in ethanol solution.
abstract: Photolysis of dipyrido-[3,2-a:2',3'-c]-phenazine (dppz) (1) in ethanol solution leads to the formation of 9,14-dihydrodipyridophenazine (2), which has been characterised by detailed NMR analysis, UV/VIS absorption spectroscopy, and theoretical calculations which reveal that its red colour is due to a low-lying intramolecular charge transfer state.
authors.affiliation: Chemistry Department, Trinity College, University of Dublin, Dublin 2, Republic of Ireland.
authors.forename: David A
authors.initials: DA
authors.lastname: McGovern
authors.forename: Ania
authors.initials: A
authors.lastname: Selmi
authors.forename: John E
authors.initials: JE
authors.lastname: O'Brien
authors.forename: John M
authors.initials: JM
authors.lastname: Kelly
authors.forename: Conor
authors.initials: C
authors.lastname: Long
mesh_terms: D000431:Ethanol / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010619:Phenazines / Q000737:chemistry*; D010782:Photolysis; D012996:Solutions / Q000737:chemistry; D013057:Spectrum Analysis
chemical_list: C518221:9,14-dihydrodipyridophenazine; D010619:Phenazines; D012996:Solutions; C443808:dipyrido(3,2-a-2',3'-c)phenazine; D000431:Ethanol