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Research Article

Self-Assembled Multilayers of Transition-Metal−Terpyridinyl Complexes; Formation, and Characterization

Laura Kosbar,* Charan Srinivasan,^† Ali Afzali, Teresita Graham, Matt Copel, and Lia Krusin-Elbaum

IBM T.J. Watson Research Center, Yorktown Heights, New York 10598

Langmuir, 2006, 22 (18), pp 7631–7638

DOI: 10.1021/la051922o

Publication Date (Web): August 4, 2006

Corresponding author. E-mail: Kosbar@us.ibm.com.

†

Charan Srinivasan's current address is Department of Electrical Engineering, Pennsylvania State University, State College, PA 16801.

Abstract

Layer-by-layer (LBL) growth of terpyridinyl ligands with a range of metal ions is reported. Monolayers of mercaptophenyl terpyridine on gold were used to initiate LBL assembly by complexing the first layer of metal ions. Tetra-2-pyridinylpyrazine was used as a linking ligand between subsequent metal ion layers. The assembly of the terpyridines with 21 different metals was evaluated using UV absorbance spectroscopy, variable-angle spectroscopic ellipsometry, and atomic force microscopy. Successful LBL growth appears to depend on the ionic radius of the metal ion. Metals that formed multilayered LBL structures were primarily limited to a small range of effective ionic radii between 66 and 73 pm. Metal ions with smaller ionic radii usually formed initial layers but seldom exhibited consistent LBL growth, while ions with radii larger than 73 nm generally did not demonstrate any evidence of LBL growth.

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Published In Issue August 29, 2006
Received July 15, 2005
Revised June 16, 2006

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Research Article

Self-Assembled Multilayers of Transition-Metal−Terpyridinyl Complexes; Formation, and Characterization

Abstract

Tools

SciFinder Links

History

Recommend & Share

Related Content

Charge Storage Behavior of Nanowire Transistors Functionalized with Bis(terpyridine)−Fe(II) Molecules: Dependence on Molecular Structure

Dinuclear Transition-Metal Terpyridine Complexes with a Dithienylcyclo- pentene Bridge Directed toward Molecular Electronic Applications

Synthesis and Redox Behavior of Biferrocenyl-Functionalized Ruthenium(II) Terpyridine Gold Clusters

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