title: Photoconversion of a protonated diarylethene derivative.
abstract: A photochromic diarylethene with N,N-dimethyl substituted group 1a was prepared. 1a showed ring-opening and ring-closing photoisomerization with UV/vis light irradiation. Treatment of 1a with CF(3)COOH produced a protonated diarylethene 1aH. With UV light irradiation, 1aH photoconverted to protonated ring-closed isomer 1c, which is photoinactive. It is found that 1c is hydrophilic and 1aH is hydrophobic.
authors.affiliation: Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Huan-huan
authors.initials: HH
authors.lastname: Liu
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.forename: Zeng
authors.initials: Z
authors.lastname: Gao
authors.forename: Yi
authors.initials: Y
authors.lastname: Chen
mesh_terms: D005030:Ethylenes / Q000737:chemistry*; D015394:Molecular Structure; D055668:Photochemical Processes; D011522:Protons; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D005030:Ethylenes; D011522:Protons; D013438:Sulfhydryl Compounds