Atomic scale investigation of temperature-dependent two-dimensional (2 D) crystallization processes of fullerene-C60 on pentacene-covered Ag(111) surface has been carried out by in situ low-temperature scanning tunneling microscopy (LT-STM) experiments. To evaluate the effect of molecule-substrate interfacial interactions on the 2 D crystallization of C60: pentacene binary system, we also carried out the same self-assembly experiments of C60 on monolayer pentacene covered graphite substrate. It is revealed that temperature-dependent structural transition of various ordered C60 nanoassemblies is strongly influenced by the molecule-Ag(111) interfacial interactions, and further mediated by the weak C60-pentacene intermolecular interactions. In situ ultraviolet photoelectron spectroscopy (UPS) has been used to evaluate the nature of the intermolecular interactions between C60 and pentacene films.
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1 February 2012
Research Article|
February 02 2012
Low-temperature scanning tunneling microscopy/ultraviolet photoelectron spectroscopy investigation of two-dimensional crystallization of C60: pentacence binary system on Ag(111)
Jia Lin Zhang;
Jia Lin Zhang
1Department of Physics,
National University of Singapore
, 2 Science Drive 3, 117542, Singapore
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Kelvin Hong Liang Zhang;
Kelvin Hong Liang Zhang
3Department of Chemistry,
Chemistry Research Laboratory, Oxford University
, Mansfield Road, Oxford OX1 3TA, United Kingdom
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Jian Qiang Zhong;
Jian Qiang Zhong
1Department of Physics,
National University of Singapore
, 2 Science Drive 3, 117542, Singapore
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Tian Chao Niu;
Tian Chao Niu
2Department of Chemistry,
National University of Singapore
, 3 Science Drive 3, 117543, Singapore
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Jia Lin Zhang
1
Kelvin Hong Liang Zhang
3
Jian Qiang Zhong
1
Tian Chao Niu
2
Wei Chen
1,2,a)
1Department of Physics,
National University of Singapore
, 2 Science Drive 3, 117542, Singapore
3Department of Chemistry,
Chemistry Research Laboratory, Oxford University
, Mansfield Road, Oxford OX1 3TA, United Kingdom
2Department of Chemistry,
National University of Singapore
, 3 Science Drive 3, 117543, Singapore
a)
Author to whom correspondence should be addressed. Electronic mail: [email protected].
J. Appl. Phys. 111, 034304 (2012)
Article history
Received:
October 22 2011
Accepted:
December 22 2011
Citation
Jia Lin Zhang, Kelvin Hong Liang Zhang, Jian Qiang Zhong, Tian Chao Niu, Wei Chen; Low-temperature scanning tunneling microscopy/ultraviolet photoelectron spectroscopy investigation of two-dimensional crystallization of C60: pentacence binary system on Ag(111). J. Appl. Phys. 1 February 2012; 111 (3): 034304. https://doi.org/10.1063/1.3679573
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