 C18SH
self-assemble onto a nano-confined gold surface |
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Chemical reactions can be accelerated
by increases in the concentration of reactants and in the reaction temperature,
or by using catalysts which often change the reaction mechanism. In certain
gas-phase and solution-phase reactions, rate accelerations have been possible
within microscopic environments such as the cavities of zeolites, and
the capsules of proteins and various supramolecular complexes. For the
reaction processes that underlie the self-assembly of thiols onto gold
to form densely packed monolayers, these processes can be accelerated
by increases in the concentration of thiols or in the reaction temperature,
or by changes in the polarity of the solvent medium. In general, the layers
formed at these accelerated rates typically have small domain sizes and
high defect densities. In the present study, we reveal that the self-assembly
process is accelerated within a spatially confined environment and proceeds
without sacrificing the quality of the resulting monolayer.
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Natural versus Spatially-Confined
Self-assembly
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| Publications: (1). Xu, S.; Cruchon-Dupeyrat, S. J. N.; Garno, J. C.; Liu, G.-Y.; Jennings, G. K.; Yong, T. H.; Laibinis, P. E. J. Chem. Phys., 1998, 108, 5002 - 5012 (2). Xu, S.; Laibinis, P. E.; Liu, G.-Y. J. Am. Chem. Soc., 1998, 120, 9356 - 9361 (3). Liu, G.-Y., Xu, S., Cruchon-Dupeyrat, S. In Thin Film: Self-Assembled Monolayers of Thiols; Ed. A. Ulman, 1998, 24, 81 - 110 |