New morphology-controlled poly(aniline) synthesis using anionic porphyrin aggregate as a template and proton-driven structural changes in the porphyrin aggregate

Tsukasa Hatano, Ah Hyun Bae, Masayuki Takeuchi, Atsushi Ikeda, Seiji Shinkai

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

It was found that 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS), which is known to aggregate in a one-dimensional fashion in water, acts as a template for the electropolymerization of aniline on an ITO electrode. Examinations using cyclic voltammetry (CV) and UV-vis spectroscopy established that J-aggregated TPPS molecules are entrapped in the resultant poly(aniline). Scanning electron microscopy (SEM) observations established that poly(aniline) grows to a nanosized rod-like structure, reflecting the aggregation structure of TPPS. The chemical oxidative polymerization of aniline in the presence of TPPS also gave a poly(aniline) rod-like structure containing the TPPS J-aggregate. It was found that the J-aggregation mode in the poly(aniline)/TPPS composite disappears when the medium pH is shifted from acidic to basic, but is regenerated when the medium pH is shifted from basic to acidic. This interconversion could be visually recognized by changes in the color and the fluorescence intensity.

Original languageEnglish
Pages (from-to)1951-1957
Number of pages7
JournalBulletin of the Chemical Society of Japan
Volume77
Issue number10
DOIs
Publication statusPublished - Oct 1 2004

Fingerprint

Porphyrins
Protons
Agglomeration
Electropolymerization
aniline
tetraphenylporphine sulfonate
Ultraviolet spectroscopy
Cyclic voltammetry
Fluorescence
Polymerization
Color
Scanning electron microscopy
Electrodes
Molecules
Water
Composite materials

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

New morphology-controlled poly(aniline) synthesis using anionic porphyrin aggregate as a template and proton-driven structural changes in the porphyrin aggregate. / Hatano, Tsukasa; Bae, Ah Hyun; Takeuchi, Masayuki; Ikeda, Atsushi; Shinkai, Seiji.

In: Bulletin of the Chemical Society of Japan, Vol. 77, No. 10, 01.10.2004, p. 1951-1957.

Research output: Contribution to journalArticle

Hatano, Tsukasa ; Bae, Ah Hyun ; Takeuchi, Masayuki ; Ikeda, Atsushi ; Shinkai, Seiji. / New morphology-controlled poly(aniline) synthesis using anionic porphyrin aggregate as a template and proton-driven structural changes in the porphyrin aggregate. In: Bulletin of the Chemical Society of Japan. 2004 ; Vol. 77, No. 10. pp. 1951-1957.
@article{4e4334e909574af7a871f6de3962303c,
title = "New morphology-controlled poly(aniline) synthesis using anionic porphyrin aggregate as a template and proton-driven structural changes in the porphyrin aggregate",
abstract = "It was found that 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS), which is known to aggregate in a one-dimensional fashion in water, acts as a template for the electropolymerization of aniline on an ITO electrode. Examinations using cyclic voltammetry (CV) and UV-vis spectroscopy established that J-aggregated TPPS molecules are entrapped in the resultant poly(aniline). Scanning electron microscopy (SEM) observations established that poly(aniline) grows to a nanosized rod-like structure, reflecting the aggregation structure of TPPS. The chemical oxidative polymerization of aniline in the presence of TPPS also gave a poly(aniline) rod-like structure containing the TPPS J-aggregate. It was found that the J-aggregation mode in the poly(aniline)/TPPS composite disappears when the medium pH is shifted from acidic to basic, but is regenerated when the medium pH is shifted from basic to acidic. This interconversion could be visually recognized by changes in the color and the fluorescence intensity.",
author = "Tsukasa Hatano and Bae, {Ah Hyun} and Masayuki Takeuchi and Atsushi Ikeda and Seiji Shinkai",
year = "2004",
month = "10",
day = "1",
doi = "10.1246/bcsj.77.1951",
language = "English",
volume = "77",
pages = "1951--1957",
journal = "Bulletin of the Chemical Society of Japan",
issn = "0009-2673",
publisher = "The Chemical Society of Japan",
number = "10",

}

TY - JOUR

T1 - New morphology-controlled poly(aniline) synthesis using anionic porphyrin aggregate as a template and proton-driven structural changes in the porphyrin aggregate

AU - Hatano, Tsukasa

AU - Bae, Ah Hyun

AU - Takeuchi, Masayuki

AU - Ikeda, Atsushi

AU - Shinkai, Seiji

PY - 2004/10/1

Y1 - 2004/10/1

N2 - It was found that 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS), which is known to aggregate in a one-dimensional fashion in water, acts as a template for the electropolymerization of aniline on an ITO electrode. Examinations using cyclic voltammetry (CV) and UV-vis spectroscopy established that J-aggregated TPPS molecules are entrapped in the resultant poly(aniline). Scanning electron microscopy (SEM) observations established that poly(aniline) grows to a nanosized rod-like structure, reflecting the aggregation structure of TPPS. The chemical oxidative polymerization of aniline in the presence of TPPS also gave a poly(aniline) rod-like structure containing the TPPS J-aggregate. It was found that the J-aggregation mode in the poly(aniline)/TPPS composite disappears when the medium pH is shifted from acidic to basic, but is regenerated when the medium pH is shifted from basic to acidic. This interconversion could be visually recognized by changes in the color and the fluorescence intensity.

AB - It was found that 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS), which is known to aggregate in a one-dimensional fashion in water, acts as a template for the electropolymerization of aniline on an ITO electrode. Examinations using cyclic voltammetry (CV) and UV-vis spectroscopy established that J-aggregated TPPS molecules are entrapped in the resultant poly(aniline). Scanning electron microscopy (SEM) observations established that poly(aniline) grows to a nanosized rod-like structure, reflecting the aggregation structure of TPPS. The chemical oxidative polymerization of aniline in the presence of TPPS also gave a poly(aniline) rod-like structure containing the TPPS J-aggregate. It was found that the J-aggregation mode in the poly(aniline)/TPPS composite disappears when the medium pH is shifted from acidic to basic, but is regenerated when the medium pH is shifted from basic to acidic. This interconversion could be visually recognized by changes in the color and the fluorescence intensity.

UR - http://www.scopus.com/inward/record.url?scp=8444240505&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=8444240505&partnerID=8YFLogxK

U2 - 10.1246/bcsj.77.1951

DO - 10.1246/bcsj.77.1951

M3 - Article

AN - SCOPUS:8444240505

VL - 77

SP - 1951

EP - 1957

JO - Bulletin of the Chemical Society of Japan

JF - Bulletin of the Chemical Society of Japan

SN - 0009-2673

IS - 10

ER -