I'm looking for (macro)molecules that are known to exhibit lateral diffusion on mica in aqueous solutions. Ideally, they would have a high affinity for mica (to limit the required concentration in the liquid bulk) and they don't self-associate into 2D clusters. So basically I'm looking for a molecular 2D "gas" that forms spontaneously without having to change the surface chemistry of mica. Any ideas ?
The following papers may be of some interest to you:
Kumaki et al., Peculiar ‘Reptational’ Movements of Single Synthetic Polymer Chains on Substrate Observed by AFM. Macromol. Rapid Commun. 2008, 29, 406–411.
Roiter an Minko, J. Phys. Chem. B 2007, 111, 8597-8604.
Hi Mike,
Actually DNA molecules are well-known examples. You may have a look at this paper among many others: Woo and Rothemund, Self-assembly of two-dimensional DNA origami lattices using cation-controlled surface diffusion, Nature Commun., 5 (2014) 4889.
Hope this helps.
Best,
Yang
Try Silicon oil. It has a tendency of "creeping" at most Interfaces. But be careful, it may inhibits all kinds of adhesion and it may be difficult to wash away.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume:209
Issue:4
Pages:2212-2221
DOI:10.1016/j.jmatprotec.2008.05.012
Published:FEB 19 2009
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