Valence electron orbitals of an oligo(p-phenylene-ethynylene)thiol on gold

被引：23

作者：

Zangmeister, CD ^{[1
]}

Robey, SW

van Zee, RD

Yao, YX

Tour, JM

机构：

[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

[2] Rice Univ, Dept Chem, Houston, TX 77005 USA

[3] Rice Univ, Ctr Nanoscale Sci & Technol, Houston, TX 77005 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 11期

关键词：

D O I：

10.1021/ja0389826

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This communication reports measurement of one-photon (21.2 eV) and one-color, two-photon (3.2?4.5 eV) photoemission spectra of 4,4′-bis-(phenylethynyl)benzenethiol chemisorbed on gold. Four features are observed in these spectra: two occupied, predominantly molecular levels below the Fermi level and two unoccupied, predominantly molecular levels above the Fermi level. The occupied and unoccupied bands closest to the Fermi level are assigned to delocalized π-bands, and the other occupied and unoccupied bands, to localized π-bands. With this assignment, the hole- and electron-injection barriers and the transport gap for those levels are deduced. Copyright © 2004 American Chemical Society.

引用

页码：3420 / 3421

页数：2

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