Evidences for Adsorption of Heptyl Viologen Cation Radicals in Thin Deposition Layers on ITO Electrodes by Slab Optical Waveguide Spectroscopy
Summary :
In situ observations were mainly performed by using slab optical waveguide (SOWG) spectroscopy synchronized with potential step measurements to investigate the time dependent spectral change of the adsorbed heptyl viologen cation radicals (HV+・) in thin deposition layer on indium-tin-oxide (ITO) electrodes. Several absorption bands, which indicated a monomer and dimer of HV+・ were co-adsorbed on ITO electrode surface with a monolayer or a few layers deposition, were observed in UV-visible region. The time dependent spectra yielded some important molecular information for the adsorption phenomena of HV+・ on the electrode surface. All observed absorption bands disappeared completely when the electrode potential of -200 mV vs. Ag/AgCl was applied, which indicated the adsorbed HV+・ species were electrochemically reoxidized on the ITO electrode.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E89-C No.12 pp.1750-1754
- Publication Date
- 2006/12/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1093/ietele/e89-c.12.1750
- Type of Manuscript
- Special Section PAPER (Special Section on Towards the Realization of Organic Molecular Electronics)
- Category
- Evaluation of Organic Materials
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Yusuke AYATO, Akiko TAKATSU, Kenji KATO, Naoki MATSUDA, "Evidences for Adsorption of Heptyl Viologen Cation Radicals in Thin Deposition Layers on ITO Electrodes by Slab Optical Waveguide Spectroscopy" in IEICE TRANSACTIONS on Electronics,
vol. E89-C, no. 12, pp. 1750-1754, December 2006, doi: 10.1093/ietele/e89-c.12.1750.
Abstract: In situ observations were mainly performed by using slab optical waveguide (SOWG) spectroscopy synchronized with potential step measurements to investigate the time dependent spectral change of the adsorbed heptyl viologen cation radicals (HV+・) in thin deposition layer on indium-tin-oxide (ITO) electrodes. Several absorption bands, which indicated a monomer and dimer of HV+・ were co-adsorbed on ITO electrode surface with a monolayer or a few layers deposition, were observed in UV-visible region. The time dependent spectra yielded some important molecular information for the adsorption phenomena of HV+・ on the electrode surface. All observed absorption bands disappeared completely when the electrode potential of -200 mV vs. Ag/AgCl was applied, which indicated the adsorbed HV+・ species were electrochemically reoxidized on the ITO electrode.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e89-c.12.1750/_p
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@ARTICLE{e89-c_12_1750,
author={Yusuke AYATO, Akiko TAKATSU, Kenji KATO, Naoki MATSUDA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Evidences for Adsorption of Heptyl Viologen Cation Radicals in Thin Deposition Layers on ITO Electrodes by Slab Optical Waveguide Spectroscopy},
year={2006},
volume={E89-C},
number={12},
pages={1750-1754},
abstract={In situ observations were mainly performed by using slab optical waveguide (SOWG) spectroscopy synchronized with potential step measurements to investigate the time dependent spectral change of the adsorbed heptyl viologen cation radicals (HV+・) in thin deposition layer on indium-tin-oxide (ITO) electrodes. Several absorption bands, which indicated a monomer and dimer of HV+・ were co-adsorbed on ITO electrode surface with a monolayer or a few layers deposition, were observed in UV-visible region. The time dependent spectra yielded some important molecular information for the adsorption phenomena of HV+・ on the electrode surface. All observed absorption bands disappeared completely when the electrode potential of -200 mV vs. Ag/AgCl was applied, which indicated the adsorbed HV+・ species were electrochemically reoxidized on the ITO electrode.},
keywords={},
doi={10.1093/ietele/e89-c.12.1750},
ISSN={1745-1353},
month={December},}
Copy
TY - JOUR
TI - Evidences for Adsorption of Heptyl Viologen Cation Radicals in Thin Deposition Layers on ITO Electrodes by Slab Optical Waveguide Spectroscopy
T2 - IEICE TRANSACTIONS on Electronics
SP - 1750
EP - 1754
AU - Yusuke AYATO
AU - Akiko TAKATSU
AU - Kenji KATO
AU - Naoki MATSUDA
PY - 2006
DO - 10.1093/ietele/e89-c.12.1750
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E89-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2006
AB - In situ observations were mainly performed by using slab optical waveguide (SOWG) spectroscopy synchronized with potential step measurements to investigate the time dependent spectral change of the adsorbed heptyl viologen cation radicals (HV+・) in thin deposition layer on indium-tin-oxide (ITO) electrodes. Several absorption bands, which indicated a monomer and dimer of HV+・ were co-adsorbed on ITO electrode surface with a monolayer or a few layers deposition, were observed in UV-visible region. The time dependent spectra yielded some important molecular information for the adsorption phenomena of HV+・ on the electrode surface. All observed absorption bands disappeared completely when the electrode potential of -200 mV vs. Ag/AgCl was applied, which indicated the adsorbed HV+・ species were electrochemically reoxidized on the ITO electrode.
ER -
English
