Effects of magnetic processing on electrochemical and photoelectrochemical properties of electrodes modified with nanoclusters of a phenothiazine-C 60 linked compound

Hiroaki Yonemura, Y. Wakita, S. Moribe, Sunao Yamada, Y. Fujiwara, Y. Tanimoto

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Effects of magnetic processing on morphological, electrochemical, and photoelectrochemical properties of electrodes modified with nanoclusters of a phenothiazine-C 60 linked compound with four methylene group (Ph(4)C 60 ) were examined in the absence and presence of magnetic processing with three different magnetic environments due to strong magnetic field. The AFM measurements indicated that the morphologies of nanostructures of Ph(4)C 60 varied with magnetic enviroments as comparison with that in the absence of magnetic processing. At top position (5.6 T; - 940 T 2 /m) with hypogravity, large spherical nanoclusters (60∼70 nm diameter) were observed as comparion with those (ca. 20 nm diameter) in the absence of magnetic processing. At middle positon (15 T; 0 T 2 /m) with normal gravity, the fiber-like nanostructure was observed. At bottom position (9.8 T; + 1070T 2 /m) with hypergravity, the rod-like nanostrucure was observed. The interesting results might be ascribed to the different solvent properties due to the different rates of evaporation of two solvents in the toluene-acetonitrile mixed solvent during drying process under various magnetic environments. First reduction peaks due to C 60 moiety of Ph(4)C 60 nanostrucures in the presence of magnetic processing at three different positions were negative-shifted as comparison with that in the absence of magnetic processing. Potential dependencies of the photocurrents of the electrodes modified with Ph(4)C 60 nanostrucures in the presence of magnetic processing at three positions were also different from that in the absence of magnetic processing. The magnetic field effects in AFM, and electrochemical and photoelectrochemical measurements are most likely ascribed to the difference of the reduction potentials due to C 60 clusters between the absence and presence of magnetic processing due to the morphological change of Ph(4)C 60 nanostrucures.

Original languageEnglish
Article number012026
JournalJournal of Physics: Conference Series
Volume156
DOIs
Publication statusPublished - Jan 1 2009

Fingerprint

phenothiazines
nanoclusters
electrodes
atomic force microscopy
high gravity environments
microgravity
magnetic fields
methylene
drying
acetonitrile
photocurrents
toluene
rods
evaporation
gravitation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Effects of magnetic processing on electrochemical and photoelectrochemical properties of electrodes modified with nanoclusters of a phenothiazine-C 60 linked compound . / Yonemura, Hiroaki; Wakita, Y.; Moribe, S.; Yamada, Sunao; Fujiwara, Y.; Tanimoto, Y.

In: Journal of Physics: Conference Series, Vol. 156, 012026, 01.01.2009.

Research output: Contribution to journalArticle

@article{a1b0bcf1b4ed450280243a5124104898,
title = "Effects of magnetic processing on electrochemical and photoelectrochemical properties of electrodes modified with nanoclusters of a phenothiazine-C 60 linked compound",
abstract = "Effects of magnetic processing on morphological, electrochemical, and photoelectrochemical properties of electrodes modified with nanoclusters of a phenothiazine-C 60 linked compound with four methylene group (Ph(4)C 60 ) were examined in the absence and presence of magnetic processing with three different magnetic environments due to strong magnetic field. The AFM measurements indicated that the morphologies of nanostructures of Ph(4)C 60 varied with magnetic enviroments as comparison with that in the absence of magnetic processing. At top position (5.6 T; - 940 T 2 /m) with hypogravity, large spherical nanoclusters (60∼70 nm diameter) were observed as comparion with those (ca. 20 nm diameter) in the absence of magnetic processing. At middle positon (15 T; 0 T 2 /m) with normal gravity, the fiber-like nanostructure was observed. At bottom position (9.8 T; + 1070T 2 /m) with hypergravity, the rod-like nanostrucure was observed. The interesting results might be ascribed to the different solvent properties due to the different rates of evaporation of two solvents in the toluene-acetonitrile mixed solvent during drying process under various magnetic environments. First reduction peaks due to C 60 moiety of Ph(4)C 60 nanostrucures in the presence of magnetic processing at three different positions were negative-shifted as comparison with that in the absence of magnetic processing. Potential dependencies of the photocurrents of the electrodes modified with Ph(4)C 60 nanostrucures in the presence of magnetic processing at three positions were also different from that in the absence of magnetic processing. The magnetic field effects in AFM, and electrochemical and photoelectrochemical measurements are most likely ascribed to the difference of the reduction potentials due to C 60 clusters between the absence and presence of magnetic processing due to the morphological change of Ph(4)C 60 nanostrucures.",
author = "Hiroaki Yonemura and Y. Wakita and S. Moribe and Sunao Yamada and Y. Fujiwara and Y. Tanimoto",
year = "2009",
month = "1",
day = "1",
doi = "10.1088/1742-6596/156/1/012026",
language = "English",
volume = "156",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",

}

TY - JOUR

T1 - Effects of magnetic processing on electrochemical and photoelectrochemical properties of electrodes modified with nanoclusters of a phenothiazine-C 60 linked compound

AU - Yonemura, Hiroaki

AU - Wakita, Y.

AU - Moribe, S.

AU - Yamada, Sunao

AU - Fujiwara, Y.

AU - Tanimoto, Y.

PY - 2009/1/1

Y1 - 2009/1/1

N2 - Effects of magnetic processing on morphological, electrochemical, and photoelectrochemical properties of electrodes modified with nanoclusters of a phenothiazine-C 60 linked compound with four methylene group (Ph(4)C 60 ) were examined in the absence and presence of magnetic processing with three different magnetic environments due to strong magnetic field. The AFM measurements indicated that the morphologies of nanostructures of Ph(4)C 60 varied with magnetic enviroments as comparison with that in the absence of magnetic processing. At top position (5.6 T; - 940 T 2 /m) with hypogravity, large spherical nanoclusters (60∼70 nm diameter) were observed as comparion with those (ca. 20 nm diameter) in the absence of magnetic processing. At middle positon (15 T; 0 T 2 /m) with normal gravity, the fiber-like nanostructure was observed. At bottom position (9.8 T; + 1070T 2 /m) with hypergravity, the rod-like nanostrucure was observed. The interesting results might be ascribed to the different solvent properties due to the different rates of evaporation of two solvents in the toluene-acetonitrile mixed solvent during drying process under various magnetic environments. First reduction peaks due to C 60 moiety of Ph(4)C 60 nanostrucures in the presence of magnetic processing at three different positions were negative-shifted as comparison with that in the absence of magnetic processing. Potential dependencies of the photocurrents of the electrodes modified with Ph(4)C 60 nanostrucures in the presence of magnetic processing at three positions were also different from that in the absence of magnetic processing. The magnetic field effects in AFM, and electrochemical and photoelectrochemical measurements are most likely ascribed to the difference of the reduction potentials due to C 60 clusters between the absence and presence of magnetic processing due to the morphological change of Ph(4)C 60 nanostrucures.

AB - Effects of magnetic processing on morphological, electrochemical, and photoelectrochemical properties of electrodes modified with nanoclusters of a phenothiazine-C 60 linked compound with four methylene group (Ph(4)C 60 ) were examined in the absence and presence of magnetic processing with three different magnetic environments due to strong magnetic field. The AFM measurements indicated that the morphologies of nanostructures of Ph(4)C 60 varied with magnetic enviroments as comparison with that in the absence of magnetic processing. At top position (5.6 T; - 940 T 2 /m) with hypogravity, large spherical nanoclusters (60∼70 nm diameter) were observed as comparion with those (ca. 20 nm diameter) in the absence of magnetic processing. At middle positon (15 T; 0 T 2 /m) with normal gravity, the fiber-like nanostructure was observed. At bottom position (9.8 T; + 1070T 2 /m) with hypergravity, the rod-like nanostrucure was observed. The interesting results might be ascribed to the different solvent properties due to the different rates of evaporation of two solvents in the toluene-acetonitrile mixed solvent during drying process under various magnetic environments. First reduction peaks due to C 60 moiety of Ph(4)C 60 nanostrucures in the presence of magnetic processing at three different positions were negative-shifted as comparison with that in the absence of magnetic processing. Potential dependencies of the photocurrents of the electrodes modified with Ph(4)C 60 nanostrucures in the presence of magnetic processing at three positions were also different from that in the absence of magnetic processing. The magnetic field effects in AFM, and electrochemical and photoelectrochemical measurements are most likely ascribed to the difference of the reduction potentials due to C 60 clusters between the absence and presence of magnetic processing due to the morphological change of Ph(4)C 60 nanostrucures.

UR - http://www.scopus.com/inward/record.url?scp=66149093514&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=66149093514&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/156/1/012026

DO - 10.1088/1742-6596/156/1/012026

M3 - Article

AN - SCOPUS:66149093514

VL - 156

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

M1 - 012026

ER -