title: Photoswitchable ring-opening polymerization of lactide catalyzed by azobenzene-based thiourea.
abstract: The reactivity of a catalytic polymerization system using photoresponsive azobenzene-based thiourea/PMDETA as a catalyst could be switched between slow and fast states by alternating exposure to UV and ambient light, because the active site of azobenzene thiourea is blocked via intramolecular hydrogen bonding when the azobenzene thiourea transfers from the E isomer to the Z isomer under UV irradiation.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou 730000, Gansu, People's Republic of China. wujc@lzu.edu.cn.
authors.forename: Zhongran
authors.initials: Z
authors.lastname: Dai
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou 730000, Gansu, People's Republic of China. wujc@lzu.edu.cn.
authors.forename: Yaqin
authors.initials: Y
authors.lastname: Cui
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou 730000, Gansu, People's Republic of China. wujc@lzu.edu.cn.
authors.forename: Changjuan
authors.initials: C
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou 730000, Gansu, People's Republic of China. wujc@lzu.edu.cn.
authors.forename: Jincai
authors.initials: J
authors.lastname: Wu
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D002384:Catalysis; D004146:Dioxanes / Q000138:chemical synthesis* / Q000737:chemistry; D006860:Hydrogen Bonding; D008027:Light; D015394:Molecular Structure; D055668:Photochemical Processes; D058105:Polymerization; D013890:Thiourea / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D004146:Dioxanes; C091880:dilactide; C009850:azobenzene; D013890:Thiourea