title: Toward organic photohydrides: excited-state behavior of 10-methyl-9-phenyl-9,10-dihydroacridine.
abstract: The excited-state hydride release from 10-methyl-9-phenyl-9,10-dihydroacridine (PhAcrH) was investigated using steady-state and time-resolved UV/vis absorption spectroscopy. Upon excitation, PhAcrH is oxidized to the corresponding iminium ion (PhAcr(+)), while the solvent (acetonitrile/water mixture) is reduced (52% of PhAcr(+) and 2.5% of hydrogen is formed). The hydride release occurs from the triplet excited state by a stepwise electron/hydrogen-atom transfer mechanism. To facilitate the search for improved organic photohydrides that exhibit a concerted mechanism, a computational methodology is presented that evaluates the thermodynamic parameters for the hydride ion, hydrogen atom, and electron release from organic hydrides.
authors: Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University , Bowling Green, Ohio 43403, United States.
authors: Xin
authors: X
authors: Yang
authors: Janitha
authors: J
authors: Walpita
authors: Dapeng
authors: D
authors: Zhou
authors: Hoi Ling
authors: HL
authors: Luk
authors: Shubham
authors: S
authors: Vyas
authors: Rony S
authors: RS
authors: Khnayzer
authors: Subodh C
authors: SC
authors: Tiwari
authors: Kadir
authors: K
authors: Diri
authors: Christopher M
authors: CM
authors: Hadad
authors: Felix N
authors: FN
authors: Castellano
authors: Anna I
authors: AI
authors: Krylov
authors: Ksenija D
authors: KD
authors: Glusac
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D000166:Acridines / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013816:Thermodynamics; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry
chemical_list: C480178:10-methyl-9,10-dihydroacridine; D000097:Acetonitriles; D000166:Acridines; D014867:Water; D006859:Hydrogen; D006861:Hydrogen Peroxide; C032159:acetonitrile