title: Two modes of photoinduced twisted intramolecular charge transfer in meso-arylaminated subporphyrins.
abstract: Photoinduced twisted intramolecular charge transfer (TICT) of meso-(4-dimethylamino)phenylamino subporphyrin and meso-(4-nitro)phenylamino subporphyrin has been revealed by steady-state and time-resolved absorption/fluorescence experiments and quantum calculations. Subporphyrins and undergo molecular twisting at the Cmeso-N bond and the N-Cipso bond, respectively, to trigger intramolecular charge separation, which is restricted at low temperature or in viscous paraffin oil with concurrent fluorescence recovery of local excited states.
authors.affiliation: Department of Chemistry and Spectroscopy Laboratory for Functional π-Electronic System, Yonsei University 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Korea. dongho@yonsei.ac.kr.
authors.forename: Won-Young
authors.initials: WY
authors.lastname: Cha
authors.forename: Jong Min
authors.initials: JM
authors.lastname: Lim
authors.forename: Kyu Hyung
authors.initials: KH
authors.lastname: Park
authors.forename: Masaaki
authors.initials: M
authors.lastname: Kitano
authors.forename: Atsuhiro
authors.initials: A
authors.lastname: Osuka
authors.forename: Dongho
authors.initials: D
authors.lastname: Kim