Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 32, Pages 11024-11026Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja105066t
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Funding
- National Science Foundation [ECCS 0901141]
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Surfaces containing reactive ester polymer brushes were functionalized with cyclopropenone-masked dibenzocyclooctynes for the light activated immobilization of azides using catalyst-free click chemistry. The photodecarbonylation reaction in the amorphous brush layer is first order for the first 45 s with a rate constant of 0.022 s(-1). The catalyst-free cycloaddition of surface bound dibeznocyclooctynes proceeds rapidly in the presence of azides under ambient conditions. Photolithography using a shadow mask was used to demonstrate patterning with multiple azide containing molecules. This surface immobilization strategy provides a general and facile platform for the generation of multicomponent surfaces with spatially resolved chemical functionality.
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