Facile Preparation of CO2‐Responsive Polymer Nano‐Objects via Aqueous Photoinitiated Polymerization‐Induced Self‐Assembly (Photo‐PISA)

Carbon dioxide (CO2)‐responsive polymer nano‐objects are prepared by photoinitiated reversible addition‐fragmentation chain transfer dispersion polymerization of 2‐hydroxypropyl methacrylate and 2‐(dimethylamino)ethyl methacrylate (DMAEMA) in water at room temperature using a poly(poly(ethylene glyc...

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Bibliographic Details
Published in:Macromolecular rapid communications. 2017-07, Vol.38 (13), p.n/a
Main Authors: Tan, Jianbo, Zhang, Xuechao, Liu, Dongdong, Bai, Yuhao, Huang, Chundong, Li, Xueliang, Zhang, Li
Format: Article
Language:English
Subjects:
Addition polymerization
Carbon dioxide
Chain transfer
Chains (polymeric)
CO2‐responsive
diblock copolymers
Fragmentation
Hydroxypropyl methacrylate
Irradiation
Light irradiation
Light scattering
Macromolecules
Photon correlation spectroscopy
photo‐PISA
Polyethylene glycol
Polymerization
Radiation
Self-assembly
Temperature effects
Vesicles
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Summary:Carbon dioxide (CO2)‐responsive polymer nano‐objects are prepared by photoinitiated reversible addition‐fragmentation chain transfer dispersion polymerization of 2‐hydroxypropyl methacrylate and 2‐(dimethylamino)ethyl methacrylate (DMAEMA) in water at room temperature using a poly(poly(ethylene glycol) methyl ether methacrylate) macromolecular chain transfer agent. Kinetic studies confirm that full monomer conversions are achieved in all cases within 10 min of visible‐light irradiation (405 nm, 0.5 mW cm−2). The effect of DMAEMA on the polymerization is studied in detail, and pure higher order morphologies (worms and vesicles) are prepared by this particular formulation. Finally, CO2‐responsive property of the obtained vesicles is investigated by dynamic light scattering, visual appearance, and transmission electron microscope. CO2‐responsive diblock copolymer nano‐objects are prepared by aqueous photoinitiated polymerization‐induced self‐assembly (photo‐PISA) of 2‐hydroxypropyl methacrylate and 2‐(dimethylamino)ethyl methacrylate. A diverse set of complex morphologies (worms and vesicles) are prepared by this facile approach. The aqueous photo‐PISA formulation reported here provides a suitable platform for in situ encapsulation and subsequently CO2‐triggered release of globular proteins.
ISSN:1022-1336
1521-3927
DOI:10.1002/marc.201600508