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Search Publications by: Lee J Richter (Assoc)

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Displaying 226 - 250 of 300

Variations in Semiconducting Polymer Microstructure and Hole Mobility With Spin-Coating Speed

November 15, 2005
Author(s)
Dean M. DeLongchamp, Brandon M. Vogel, Youngsuk Jung, Curt A. Richter, Oleg A. Kirillov, Jan Obrzut, Daniel A. Fischer, S Sambasivan, Marc Gurau, Lee J. Richter, Eric K. Lin
Organic semiconductors permit low-cost processing methods such as spin-coating, dip coating, or ink-jet printing onto flexible substrates. However, the performance of these materials in devices is difficult to control and new processing methods can deliver

In Situ Ellipsometric Study of PEG/Cl - Coadsorption on Cu, Ag, and Au

May 1, 2005
Author(s)
Marlon L. Walker, Lee J. Richter, Thomas P. Moffat
Spectroscopic ellipsometry was used to examine the adsorption of polyethylene glycol (PEG) and Cl- on polycrystalline Cu, Ag and Au electrodes in sulfuric acid. In halide-free sulfuric acid, PEG adsorption on Cu and Ag is minimal at potentials positive of

Structure of Polystyrene at the Interface With Various Liquids

September 4, 2004
Author(s)
Clayton S. Yang, P T. Wilson, Lee J. Richter
Vibrationally resonant sum frequency generation (VR-SFG) is used to determine the structure of the phenyl side groups of deuterated polystyrene at the liquid/solid interface for the nonsolvent liquids: hexane, methanol, ethanol, glycerol, and water. The

Template Fabrication of Protein-Functionalized Gold-Polypyrrole-Gold Segmented Nanowires

September 1, 2004
Author(s)
R M. Hernandez, Lee J. Richter, Stephen Semancik, Stephan J. Stranick, Thomas E. Mallouk
Gold nanowires containing protein-modified poly(pyrrole) (Ppy) junctions were synthesized electrochemically using porous aluminum oxide as a template. The effects of the conditions of electrochemical synthesis on Ppy growth and protein (avidin or

Optical Characterization of Oligo (phenylene-ethynylene) Self-Assembled Monolayers on GoldMonolayers on Gold

July 27, 2004
Author(s)
Lee J. Richter, Clayton S. Yang, P T. Wilson, Christina A. Hacker, Roger D. van Zee, J J. Stapleton, D L. Allara, Yuxing Yao, J M. Tour
Vibrationally resonant sum frequency generation (VR-SFG) and spectroscopic ellipsometry (SE) have been used to characterize self-assembled monolayer films of unsubstituted and mononitro substituted oligo(phenylene-ethynylene) molecules on vapor deposited

Structure and Chemical Characterization of Self-Assembled Mono-Fluoro-Substituted Oligo(phenylene-ethynlyene) Monolayers on Gold

June 22, 2004
Author(s)
Christina Hacker, James D. Batteas, J C. Garno, Manuel Marquez, Curt A. Richter, Lee J. Richter, Roger D. van Zee, Christopher D. Zangmeister
Monolayers of oligo(phenylene-ethynylene) (OPE) molecules have exhibited promise in molecular electronic test structures. This paper discusses films formed from novel molecules within this class, 2-fluoro-4-phenylethynyl-1-[(4-acetylthio)-phenylethynyl

Molecular Devices Formed by Direct Monolayer Attachment to Silicon

June 17, 2004
Author(s)
Curt A. Richter, Christina Hacker, Lee J. Richter, Eric M. Vogel
We present the results of studies of solution-based attachment of long-chain aliphatic molecules to hydrogen-terminated Si surfaces formed to determine the electrical properties of hybrid silicon-molecular nanoelectronic devices. We have applied an

Molecular Devices formed by Direct Monolayer Attachment to Silicon

December 10, 2003
Author(s)
Curt A. Richter, Christina A. Hacker, Lee J. Richter
We present the results of studies of solution-based attachment of long-chain aliphatic molecules to hydrogen-terminated Si surfaces formed to pursue the electrical properties of organic monolayers and as a first step towards creating hybrid silicon
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