An STM/STS study of site-selective adsorption of C70 molecules onto arc-shaped BODIPY molecular-networks.
In this article, a donor-acceptor H-T-BO/C70 system was studied by a STM/STS method on the molecular level. STM results revealed that H-T-BO, a BODIPY-based derivative, can form a semi-closed molecular network at the 1-phenyloctane/HOPG interface. After introducing C70 fullerene molecules into the network, two kinds of self-assembled nanoarrays were observed by STM. Density functional theory has been utilized to reveal the formation mechanism of the molecular nanoarrays. Scanning Tunneling Spectroscopy (STS) measurements were performed to investigate the electronic properties of H-T-BO/C70 systems. I-V spectra combined with theoretical analyses showed that the introduction of C70 into the H-T-BO system induced a great drop of the band gap, which should be a result of electrons transferring from the donor H-T-BO to the acceptor C70 molecules.
CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China. zengqd@nanoctr.cn kdeng@nanoctr.cn and University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
Jing
http://orcid.org/0000-0003-3368-7673
J
Xu
University of Chinese Academy of Sciences, Beijing 100049, P. R. China and Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, China. clzhan@iccas.ac.cn.
Wenxu
W
Liu
CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China. zengqd@nanoctr.cn kdeng@nanoctr.cn and University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
Yanfang
Y
Geng
CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China. zengqd@nanoctr.cn kdeng@nanoctr.cn and University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
Ke
http://orcid.org/0000-0003-3016-0139
K
Deng
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, China. clzhan@iccas.ac.cn.
Chuanlang
http://orcid.org/0000-0001-5127-0973
C
Zhan
CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China. zengqd@nanoctr.cn kdeng@nanoctr.cn and University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
Qingdao
http://orcid.org/0000-0003-3394-2232
Q
Zeng