TY  - JOUR
AU  - Lüssem, B.
AU  - Müller-Meskamp, L.
AU  - Karthäuser, S.
AU  - Homberger, M.
AU  - Simon, U.
AU  - Waser, R.
TI  - Electrical Characterization of Biphenylalkanethiol SAMs
JO  - The journal of physical chemistry  / C
VL  - 111
SN  - 1932-7447
CY  - Washington, DC
PB  - Soc.
M1  - PreJuSER-56505
SP  - 6392
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - The electron-transfer properties of a full-coverage self-assembled monolayer of biphenylethanethiol (CH3-C6H4-C6H4-(CH2)(2)-SH, BP2) is studied by current versus distance spectroscopy. With this, the electrical properties of different functional groups in one molecule are vertically resolved. The current versus distance plot is shown to consist of three different parts, whose logarithmic slope is interpreted as the decay length of the vacuum, the biphenyl group, and the alkane chain. This finding is described in a trilayer tunnel junction model and the decay constant, beta(Ph), of the tunneling current through the biphenyl group is estimated. Besides characterizing the biphenylalkanethiol monolayers electrically, the structure of these layers is determined by UHV-STM. Two new structures with rectangular (4 x 6 root 3) lattices are identified for 4'-methyl-1,1'-biphenyl-4-ethanethiol self-assembled monolayers on (111)-oriented gold surfaces.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000245954900036
DO  - DOI:10.1021/jp067459l
UR  - https://juser.fz-juelich.de/record/56505
ER  -