"Fatal adsorption" of brushlike macromolecules: high sensitivity of C-C bond cleavage rates to substrate surface energy.
J Am Chem Soc
; 130(13): 4228-9, 2008 Apr 02.
Article
em En
| MEDLINE
| ID: mdl-18327946
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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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article