title: Low-Temperature Synthesis of Thermoresponsive Diblock Copolymer Nano-Objects via Aqueous Photoinitiated Polymerization-Induced Self-Assembly (Photo-PISA) using Thermoresponsive Macro-RAFT Agents.
abstract: Photoinitiated reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization of 2-hydroxypropyl methacrylate is conducted in water at low temperature using thermoresponsive copolymers of 2-(2-methoxyethoxy) ethyl methacrylate and oligo(ethylene glycol) methacrylate (Mn = 475 g mol(-1) ) as the macro-RAFT agent. Kinetic studies confirm that quantitative monomer conversion is achieved within 15 min of visible-light irradiation (405 nm, 0.5 mW cm(-2) ), and good control is maintained during the polymerization. The polymerization can be temporally controlled by a simple "ON/OFF" switch of the light source. Finally, thermoresponsive diblock copolymer nano-objects with a diverse set of complex morphologies (spheres, worms, and vesicles) are prepared using this particular formulation.
authors.affiliation: Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China. tanjianbo@gdut.edu.cn.|Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, China. tanjianbo@gdut.edu.cn.
authors.forename: Jianbo
authors.initials: J
authors.lastname: Tan
authors.affiliation: Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.
authors.forename: Yuhao
authors.initials: Y
authors.lastname: Bai
authors.affiliation: Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.
authors.forename: Xuechao
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.
authors.forename: Chundong
authors.initials: C
authors.lastname: Huang
authors.affiliation: Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.
authors.forename: Dongdong
authors.initials: D
authors.lastname: Liu
authors.affiliation: Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China. lizhang@gdut.edu.cn.|Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, China. lizhang@gdut.edu.cn.
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
mesh_terms: D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D055668:Photochemical Processes; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D046911:Macromolecular Substances; D011108:Polymers; D014867:Water
keywords: RAFT; diblock copolymers; photo-PISA; self-assembly; thermoresponsive