title: Unusual conformational preference of an aromatic secondary urea: solvent-dependent open-closed conformational switching of N,N'-bis(porphyrinyl)urea.
abstract: N,N'-Bis(2,3,7,8,12,13,17,18-octaethylporphyrin-5-yl)urea (3) exhibits cis-trans conformational switching depending on the solvent properties, and can adopt the cofacial porphyrin dimer structure under certain conditions. The conformational preference can be switched by electrochemical stimulus.
authors.affiliation: Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Tokyo 112-8610, Japan.
authors.forename: Mio
authors.initials: M
authors.lastname: Matsumura
authors.forename: Aya
authors.initials: A
authors.lastname: Tanatani
authors.forename: Isao
authors.initials: I
authors.lastname: Azumaya
authors.forename: Hyuma
authors.initials: H
authors.lastname: Masu
authors.forename: Daisuke
authors.initials: D
authors.lastname: Hashizume
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kagechika
authors.forename: Atsuya
authors.initials: A
authors.lastname: Muranaka
authors.forename: Masanobu
authors.initials: M
authors.lastname: Uchiyama
mesh_terms: D055664:Electrochemical Techniques; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D011166:Porphyrins / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D014508:Urea / Q000031:analogs & derivatives* / Q000737:chemistry*
chemical_list: C583011:N,N'-bis(2,3,7,8,12,13,17,18-octaethylporphyrin-5-yl)urea; D011166:Porphyrins; D012997:Solvents; D014508:Urea