“Fatal Adsorption” of Brushlike Macromolecules: High Sensitivity of C−C Bond Cleavage Rates to Substrate Surface Energy
Journal of the American Chemical Society2008Vol. 130(13), pp. 4228–4229
Citations Over TimeTop 10% of 2008 papers
Abstract
Adsorption-induced degradation of brushlike macromolecules was monitored through molecular imaging by atomic force microscopy. The rate constant for C-C bond cleavage was shown to be extremely sensitive to the substrate surface energy. A few percent increase in the surface energy from 69.2 to 71.2 mN/m led to an order of magnitude increase of the scission rate. The absolute values of the rupture forces ranging from 2.57 to 2.47 nN are in agreement with previously calculated and measured values for stretching surface-tethered molecules.
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