Journal
BIOMACROMOLECULES
Volume 6, Issue 2, Pages 780-789Publisher
AMER CHEMICAL SOC
DOI: 10.1021/bm049462l
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Funding
- NIBIB NIH HHS [EB-00783] Funding Source: Medline
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A series of new nitric oxide (NO) releasing copolymers have been prepared by covalently anchoring alkyldiamine side chains onto a polymethacrylate-based polymer backbone, followed by NO addition to form the desired pendant diazeniumdiolate structures. The resulting diazeniumcliolated copolymers were characterized via UV spectroscopy, and their proton-driven decomposition to release NO was also examined by UV and FTIR as well as chemiluminescence. Polymers with up to 22.1 mol % of incorporated amine sites that can be converted to corresponding diazeniumcliolates could be prepared, and such polymers release up to 0.94 mu mol/mg of NO. Further, novel NO releasing polymeric coatings were formulated by doping one of the new polymethacrylate-based NO donors within inert polymeric matrixes. Biodegradable poly(lactideco-glycolide) was employed as a film additive to greatly prolong the NO release of such coatings by continuously generating protons within the organic phase of the polymeric films, thereby driving decomposition of the diazeniumcliolates.
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