Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Ultraviolet Photoemission Spectra of Para-Phenylene-Ethynylene Thiols Chemisorbed on Gold

Published

Author(s)

Christopher D. Zangmeister, Roger D. van Zee, Steven W. Robey, N E. Gruhn, Yuxing Yao, J M. Tour

Abstract

Photoemission spectra of para-phenylene-ethynylene thiols chemisorbed on gold have been measured. Four compounds were studied: 4,4'-bis(phenylethynyl)-benzenethiol, 4 (phenylethynyl)benzenethiol, 4-ethynylbenzenethiol, and benzenethiol. The spectra were used to determine the work function of the monolayer-covered surface and energy alignment of the highest occupied p state of the monolayer relative to the Fermi level of the substrate. The vacuum level of the monolayer-covered surface is shifted relative to that of the bare substrate by about -0.9 eV. The shift is attributed to changes in the charge distribution at the interface that occur upon chemisorption.
Citation
Journal of Physical Chemistry

Keywords

energy-level alignment, gold, monolayer, oligo(phenylene-ethynylene, photoemission, UPS

Citation

Zangmeister, C. , van, R. , Robey, S. , Gruhn, N. , Yao, Y. and Tour, J. (2008), Ultraviolet Photoemission Spectra of Para-Phenylene-Ethynylene Thiols Chemisorbed on Gold, Journal of Physical Chemistry (Accessed July 21, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created January 1, 2008, Updated February 19, 2017