* * * * *
Self-assembled molecular networks (SAMNs), two-dimensional surface patterns
formed spontaneously from selected molecular species, constitute a rapidly
expanding field of study. Through control of the geometry and functionality
of the constituent molecules, SAMNs can be custom-designed to produce
specific structural and electronic characteristics. One potential application
of SAMNs is in modifying surfaces in order to produce specific biological
interactions. SAMNs formed at a solution/solid interface can be used to
investigate the interaction between purpose-designed, nanopatterned surfaces
and prototypical biomolecules in an environment that mimics in situ biological
conditions. In particular, linearly-patterned SAMNs with customizable
periodicities can be grown at the solution/graphite interface [a]. This
system affords a unique opportunity to test whether the periodicity of
the surface pattern can be manipulated to guide the behavior of biological
molecules. By comparing this model system to other SAMNs, we will be able
to provide insight as to what parameters (composition, periodicity, hydrophobicity/philicity)
need to be adjusted to optimize SAMNs for specific biological signaling.
[a] Krishna G. Nath, Oleksandr Ivasenko, Jill A. Miwa, Hung Dang, James
D. Wuest, Antonio Nanci, Dmitrii F. Perepichka and Federico Rosei, A Rational
Modulation of the Periodicity in Linear Hydrogen-Bonded Assemblies of
Trimesic Acid on Surfaces, J. Am. Chem. Soc., No 128, 4212-4213 (2006)
Publications
1. A. B. McLean, I. G. Hill, J. A. Lipton-Duffin, J. M. MacLeod, R. H.
Miwa and G. P. Srivastava, Nanolines on silicon surfaces, International
Journal of Nanotechnolgy (accepted September 2006)
2. J. A. Lipton-Duffin, J. M. MacLeod and A. B. McLean, Image states in
low-dimensional systems: Si(557)-Au, Physical Review B 73, 245418 (2006)
3. J. M. MacLeod, D. Psiachos, M. J. Stott and A. B. McLean, Indium Clusters
on the Ge(5´5) Wetting Layer of Si(111)-7´7, Physical Review
B 73, 241306(R) (2006)
4. R.H. Miwa, J. M. MacLeod, A.B. McLean and G.P. Srivastava, Reply to
Comment by Bowler et al, Bi nanolines on Si(001): registry with the substrate,
Nanotechnology, 17, 1803-1805 (2006)
5. R.H. Miwa, J. M. MacLeod, A.B. McLean and G.P. Srivastava, The equilibrium
geometry and electronic structure of Bi nanolines on clean and hydrogenated
Si(001) surfaces, Nanotechnology, 16, 2427-2435 (2005)
6. R.H. Miwa, J. M. MacLeod, G.P. Srivastava and A.B. McLean, The geometry
of Bi nanolines, Applied Surface Science, 244, 1-4, 157-160 (2005)
7. J. M. MacLeod, R.H. Miwa, G.P. Srivastava and A.B. McLean , The electronic
origin of contrast reversal in bias-dependent STM images of nanolines,
Surface Science, 576 (1-3): 116-122 (2005)
8. A. G. Mark, J. A. Lipton-Duffin, J. M. MacLeod, R. H. Miwa, G. P. Srivastava
and A. B. McLean , The electronic properties of Si(001)-Bi(2´n),
Journal of Physics: Condensed Matter, 17 (4): 571-580
(2004)
9. J. M. MacLeod, C. P. Lima, R. H. Miwa, G. P. Srivastava and A. B. McLean,
Bismuth nanolines on Si(001) and their influence on mesoscopic surface
structure, Materials
Science and Technology, 20(8): 951-954 (2004)
10. J. M. MacLeod and A. B. McLean, Single 2x1 domain orientation on Si(001)
surfaces using aperiodic Bi line arrays, Physical Review B, 70: 041306(R)
(2004)
11. J. A. Miwa, J. M. MacLeod, Antje Moffat and A. B. McLean, Rattling
modes and the intrinsic vibrational spectrum of beetle-type scanning tunneling
microscopes, Ultramicroscopy, 98: 43-49 (2003)
12. J. M. MacLeod, Antje Moffat, J. A. Miwa, A.G. Mark, G. K. Mullins,
R. H. J. Dumont, G. E. Contant and A.B. McLean, Two linear beetle-type
scanning tunneling microscopes, Review of Scientific Instruments, 74(4):
2429-2437 (2003)
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