POLY 419 |
| Nowadays, the alkyne-azide cycloaddition, click chemistry, is often applied in polymer science based on, e.g, the easy reaction conditions, versatility, functional group tolerance and high yields. Here, we report the synthesis of star-shaped polymers consisting of a b-cyclodextrin core and poly(¦Å-caprolactone) polymer arms via click chemistry. In addition, the concept of supramolecular click chemistry is introduced following the basic concept of click chemistry as introduced by Sharpless. However, the stereospecificity that is a prerequisite for conventional click chemistry is replaced by directionality and the required high yield of the reaction can be translated into high association constants (Ka °Ý 106). Following these requirements, the formation of star-shaped polymers via supramolecular click chemistry is demonstrated based on the self-assembly of 3,6-di(2-pyridyl)pyridazine functionalized poly(¦Å-caprolactone) with copper(I) ions.
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Metal-Containing and Metallo-Supramolecular Polymers and Materials
6:00 PM-8:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster
Sci-Mix
Division of Polymer Chemistry |
