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Polymer Brushes with Phototriggered and Phototunable Swelling and pH Response
Author(s) -
Cui Jiaxi,
Azzaroni Omar,
del Campo Aránzazu
Publication year - 2011
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201100435
Subject(s) - swelling , polymer , polymer chemistry , brush , irradiation , materials science , amine gas treating , polymer brush , chemistry , photochemistry , composite material , organic chemistry , polymerization , physics , nuclear physics
Photolabile polymer brushes with tailored length containing a photoremovable protecting group (NVOC) are prepared via the SI‐ATRP method. Upon light irradiation, the NVOC group is removed to generate controlled densities of free amine groups (PAMA) randomly distributed along the brush. The presence of the ionizable groups induces a photo‐triggered swelling response. The swelling degree can be tuned by the irradiation dose. A dual (light and pH), tunable response is demonstrated.