Topography and Transport Properties of Oligo(phenylene ethynylene) Molecular Wires Studied by Scanning Tunneling Microscopy

2003 ◽  
Vol 3 (3) ◽  
pp. 231-234 ◽  
Author(s):  
Geetha R. Dholakia ◽  
Wendy Fan ◽  
Jessica Koehne ◽  
Jie Han ◽  
M. Meyyappan
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Transport Properties ◽  
Molecular Wires ◽  
Scanning Tunneling ◽  
Phenylene Ethynylene ◽  
Tunneling Microscopy

scholarly journals Characterization of thiol-functionalized oligo(phenylene-ethynylene)-protected Au nanoparticles by scanning tunneling microscopy and spectroscopy

2012 ◽  
Vol 101 (8) ◽  
pp. 083115 ◽  
Author(s):  
Hyunmo Koo ◽  
Shinya Kano ◽  
Daisuke Tanaka ◽  
Masanori Sakamoto ◽  
Toshiharu Teranishi ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Au Nanoparticles ◽  
Scanning Tunneling ◽  
Phenylene Ethynylene ◽  
Tunneling Microscopy

CONSTRUCTION OF MOLECULAR SENSORS FOR PROTONS USING π-CONJUGATED MOLECULES

2005 ◽  
Vol 04 (04) ◽  
pp. 475-481
Author(s):  
EMIKO KOYAMA ◽  
HIDEO TOKUHISA ◽  
ABDELHAK BELAISSAOUI ◽  
YOSHINOBU NAGAWA ◽  
MASATOSHI KANESATO ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Scanning Tunneling ◽  
Height Distribution ◽  
Phenylene Ethynylene ◽  
Tunneling Microscopy ◽  
Conjugated Molecules ◽  
Molecular Sensors

The protonation/deprotonation response of a novel bipyridine containing (phenylene-ethynylene) thiol adsorbed to a Au surface was investigated with scanning tunneling microscopy (STM). STM results show reversible changes in the average heights (~50 spots) and the height distribution arising from protonation/deprotonation.

scholarly journals En route to a dianilinyl-substituted carbo-cyclohexadiene with promising electrical properties

2015 ◽  
Vol 3 (1) ◽  
pp. 46-52 ◽  
Author(s):  
Oleg Lozynskyi ◽  
Cécile Barthes ◽  
Arnaud Rives ◽  
Valérie Maraval ◽  
Zoia Voitenko ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Scanning Tunneling Microscopy ◽  
Charge Transport ◽  
Transport Properties ◽  
Single Molecule ◽  
Scanning Tunneling ◽  
Break Junction ◽  
Tunneling Microscopy

The macro-aromatic carbo-benzene core para-disubstituted by 4-anilinyl groups is known to be an efficient single-molecule conductor, exhibiting a conductance of 106 nS measured by the scanning tunneling microscopy-break junction technique. The linear carbo-butadiene analogue bearing the same anilinyl substituents was found to be less efficient, with a conductance of 2.7 nS. The reason of this difference could be elucidated through the study of the charge transport properties of a cyclically locked carbo-butadiene core in a carbo-cyclohexadiene derivative. In this paper, advances in the synthesis of this challenging dianilinyl-substituted carbo-cyclohexadiene are presented.

Scanning Tunneling Microscopy of Self-Assembled Phenylene Ethynylene Oligomers on Au(111) Substrates

2004 ◽  
Vol 126 (4) ◽  
pp. 1229-1234 ◽  
Author(s):  
Karsten Walzer ◽  
Eike Marx ◽  
Neil C. Greenham ◽  
Robert J. Less ◽  
Paul R. Raithby ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Scanning Tunneling ◽  
Phenylene Ethynylene ◽  
Tunneling Microscopy ◽  
Self Assembled

Molecular Organization of Alkoxy-Substituted Oligo(phenylene-ethynylene)s Studied by Scanning Tunneling Microscopy

Langmuir ◽  
2003 ◽  
Vol 19 (24) ◽  
pp. 10128-10131 ◽  
Author(s):  
Jian-Ru Gong ◽  
Jing-Ling Zhao ◽  
Sheng-Bin Lei ◽  
Li-Jun Wan ◽  
Zhi-Shan Bo ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Molecular Organization ◽  
Scanning Tunneling ◽  
Phenylene Ethynylene ◽  
Tunneling Microscopy

A study on α-RuCl3 crystal structure by scanning tunneling microscopy

1989 ◽  
Vol 47 ◽  
pp. 30-31
Author(s):  
H.-J. Cantow ◽  
H. Hillebrecht ◽  
S. Magonov ◽  
H. W. Rotter ◽  
G. Thiele
Keyword(s):  
Crystal Structure ◽  
Density Distribution ◽  
Scanning Tunneling Microscopy ◽  
Electron Density ◽  
Structure Determination ◽  
Electron Density Distribution ◽  
Scanning Tunneling ◽  
Monoclinic Space Group ◽  
Tunneling Microscopy ◽  
X Ray

From X-ray analysis, the conclusions are drawn from averaged molecular informations. Thus, limitations are caused when analyzing systems whose symmetry is reduced due to interatomic interactions. In contrast, scanning tunneling microscopy (STM) directly images atomic scale surface electron density distribution, with a resolution up to fractions of Angstrom units. The crucial point is the correlation between the electron density distribution and the localization of individual atoms, which is reasonable in many cases. Thus, the use of STM images for crystal structure determination may be permitted. We tried to apply RuCl3 - a layered material with semiconductive properties - for such STM studies. From the X-ray analysis it has been assumed that α-form of this compound crystallizes in the monoclinic space group C2/m (AICI3 type). The chlorine atoms form an almost undistorted cubic closed package while Ru occupies 2/3 of the octahedral holes in every second layer building up a plane hexagon net (graphite net). Idealizing the arrangement of the chlorines a hexagonal symmetry would be expected. X-ray structure determination of isotypic compounds e.g. IrBr3 leads only to averaged positions of the metal atoms as there exist extended stacking faults of the metal layers.

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