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Two-Dimensional Molecular Grids on Mercury

Published online by Cambridge University Press:  01 February 2011

Natalia Varaksa ,
Lubomír Pospíŝil ,
Zbynìk Janouêk ,
Bohumír Grüner ,
Bing Wang ,
Jaroslav Pecka ,
Thomas Magnera  and
Josef Michl
Natalia Varaksa
Affiliation:
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215
Lubomír Pospíŝil
Affiliation:
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215
Zbynìk Janouêk
Affiliation:
J. HeyrovskýInstitute of Physical Chemistry, Academy of Sciences of the Czech Republic, 18223 Prague 8, Czech Republic.
Bohumír Grüner
Affiliation:
J. HeyrovskýInstitute of Physical Chemistry, Academy of Sciences of the Czech Republic, 18223 Prague 8, Czech Republic.
Bing Wang
Affiliation:
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215
Jaroslav Pecka
Affiliation:
J. HeyrovskýInstitute of Physical Chemistry, Academy of Sciences of the Czech Republic, 18223 Prague 8, Czech Republic.
Thomas Magnera
Affiliation:
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215
Josef Michl
Affiliation:
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215
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Abstract

We describe an electrochemical Langmuir-Blodgett (LB) trough for the synthesis and characterization of regular two-dimensional networks on a mercury surface. Two strategies were applied to the preparation of molecular grids on mercury. One was based on the mounting of lanthanum(III) bis(meso-tetrapyridylporphyrinate) sandwich anions (TPyP)2La on mercury subphase and coupling it with hydroquinone derivatives as temporary, or “phantom”, couplers. These couplers provide a weak and reversible bridging of (TPyP)2La- connectors on mercury. As a result a highly ordered square grid is created prior to the introduction of the real sturdy couplers for the replacement of the “phantom” ones. In the other strategy advantage has been taken of the high affinity of divalent sulfur compounds for mercury ions. The trigonal connectors, 1,3,5-triscarboranylbenzenes with attached alkylthioether chains, are firmly adsorbed on mercury at positive potentials and presumably form a hexagonal grid due to their mutual coupling through mercury ions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 728: Symposium S – Functional Nanostructured Materials through Multiscale Assembly and Novel Patterning Techniques , 2002 , S8.15
Copyright
Copyright © Materials Research Society 2002

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References

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