52
3 Confinement Effects on the Reactivity in Ultrathin …
Fig. 3.5 Linearization of the NHS ester surface coverages determined from a the CA data and
b the FTIR data acquired at various reaction temperatures according to pseudo-first-order kinetics.
The solid lines correspond to linear least squares fits of the data
Fig. 3.6 Logarithmic plots of second-order rate constants obtained from the linear fits in Fig. 3.5
versus inverse temperature according to the Arrhenius equation for a CA data and b IR data. The
solid lines correspond to linear least squares fits of the data
For NHS-C10 monolayers, the second-order rate constants also obey the Arrhenius equation (Eq. 3.2) [20]. The activation energies and the parameters characterizing the transition state of the activated complex are summarized in Table 3.2 for
both the reactions in SAMs and the reactions of the ultrathin polymer films.
3.2.3 Comparison of Surface Reactions in SAMs
and Ultrathin Polymer Films
Both self-assembled monolayer and ultrathin homopolymer film systems studied
show pseudo-first-order surface hydrolysis kinetics and obey the Arrhenius equation. A comparison with the hydrolysis of low molar mass NHS esters in solution
3 Confinement Effects on the Reactivity in Ultrathin …
Fig. 3.5 Linearization of the NHS ester surface coverages determined from a the CA data and
b the FTIR data acquired at various reaction temperatures according to pseudo-first-order kinetics.
The solid lines correspond to linear least squares fits of the data
Fig. 3.6 Logarithmic plots of second-order rate constants obtained from the linear fits in Fig. 3.5
versus inverse temperature according to the Arrhenius equation for a CA data and b IR data. The
solid lines correspond to linear least squares fits of the data
For NHS-C10 monolayers, the second-order rate constants also obey the Arrhenius equation (Eq. 3.2) [20]. The activation energies and the parameters characterizing the transition state of the activated complex are summarized in Table 3.2 for
both the reactions in SAMs and the reactions of the ultrathin polymer films.
3.2.3 Comparison of Surface Reactions in SAMs
and Ultrathin Polymer Films
Both self-assembled monolayer and ultrathin homopolymer film systems studied
show pseudo-first-order surface hydrolysis kinetics and obey the Arrhenius equation. A comparison with the hydrolysis of low molar mass NHS esters in solution