Polymer Brushes with Phototriggered and Phototunable Swelling and pH Response

J. CUI; O. AZZARONI; A. DEL CAMPO

MACROMOLECULAR RAPID COMMUNICATIONS

WILEY-V C H VERLAG GMBH

Lugar: Weinheim; Año: 2011 vol. 32 p. 1699 - 1703

1022-1336

Photolabile polymer brushes with tailored length containing a photoremovable protectinggroup (NVOC) are prepared via the SI-ATRP method. Upon light irradiation, the NVOC group isremoved to generate controlled densities of free amine groups (PAMA) randomly distributedalong the brush. The presence of the ionizable groups induces a photo-triggered swellingresponse. The swelling degree can be tuned by the irradiation dose. A dual (light and pH), tunable response is demonstrated