Unger, Katrin; Salzmann, Paul; Masciullo, Cecilia; Cecchini, Marco; Koller, Georg; Coclite, Anna Maria published the artcile< Novel Light-Responsive Biocompatible Hydrogels Produced by Initiated Chemical Vapor Deposition>, Application of C9H3F5O2, the main research area is chem vapor deposition biocompatible hydrogel light swelling azobenzene; biocompatibility; hydrogels; iCVD; photoresponse; smart materials.
A novel multiresponsive hydrogel has been synthesized by initiated chem. vapor deposition (iCVD). Hydrogels are known for their dynamic swelling response to aqueous environments. A chem. functionalization of the hydrogel surface was performed to add other stimuli-responsive functionalities and obtain a smart material that responds to two stimuli: light irradiation and exposure to aqueous environment. Modifying the hydrogel surface with solution-based methods is often problematic because of the damages caused by the permeation of solvents in the hydrogel. This issue is completely bypassed by the use of solvent-free techniques. Cross-linked polymers of 2-hydroxyethyl methacrylate (HEMA) were functionalized with azobenzene groups, as confirmed by IR spectroscopy and XPS. Through photoisomerization of the azobenzene, the polarity within the hydrogel is modified and as a consequence the affinity to water. Light irradiation modifies the degree of swelling within thin hydrogel films from 13% before exposure to UV light to 25% after exposure. The possibility of controlling the degree and rate of swelling by light irradiation was never reported before on these time scales and can have exceptional implications for light-induced drug delivery or light-controlled microfluidic systems. The light-responsive hydrogels showed also biocompatibility, which makes them suitable for a great variety of applications as biomaterials.
ACS Applied Materials & Interfaces published new progress about Biocompatibility. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Application of C9H3F5O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics