Synthesis of poly[(p-anisylamino)-tris(hexyloxy) triphenylene] and its magnetic property

Takeshi Ibe; Eiji Fukuzaki; Hiroyuki Nishide

Synthesis of poly[(p-anisylamino)-tris(hexyloxy) triphenylene] and its magnetic property

Takeshi Ibe^*, Eiji Fukuzaki, Hiroyuki Nishide

^*Corresponding author for this work

Waseda Research Institute for Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

For the creation of a purely organic ferromagnet, π-conjugated polyradicals satisfying nonKekulé and non-disjoint structure have been synthesized. In this report, the triaminotriphenylene derivative 2 and the tribromotriphenylene derivative 3 were synthesized from 2-methoxyphenol via 5 and 6 steps. High molecular weight aromatic polyamines 4 were prepared by palladium-catalyzed polycondensation. Polycondensation conditions, such as catalytic ligand, solvent, base, and feed ratio of the comonomers were optimized. The polyamines 4 were oxidized to the corresponding poly(aminium cationic radicals 1. ESR and UV-vis spectrum indicated a N-centered radical generation. Magnetic properties of polyradicals 1 were examined by SQUID measurement, which displayed a chemical stability and an intramolecular ferromagnetic interaction of the polyradical.

Original language	English
Title of host publication	Polymer Preprints, Japan
Pages	4103
Number of pages	1
Volume	54
Edition	2
Publication status	Published - 2005
Event	54th SPSJ Symposium on Macromolecules - Yamagata Duration: 2005 Sept 20 → 2005 Sept 22

Other

Other	54th SPSJ Symposium on Macromolecules
City	Yamagata
Period	05/9/20 → 05/9/22

Keywords

Aminium radical
High-spin molecule
Palladium-coupling
Radical polymer
Triphenylene

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Synthesis of poly[(p-anisylamino)-tris(hexyloxy) triphenylene] and its magnetic property",

abstract = "For the creation of a purely organic ferromagnet, π-conjugated polyradicals satisfying nonKekul{\'e} and non-disjoint structure have been synthesized. In this report, the triaminotriphenylene derivative 2 and the tribromotriphenylene derivative 3 were synthesized from 2-methoxyphenol via 5 and 6 steps. High molecular weight aromatic polyamines 4 were prepared by palladium-catalyzed polycondensation. Polycondensation conditions, such as catalytic ligand, solvent, base, and feed ratio of the comonomers were optimized. The polyamines 4 were oxidized to the corresponding poly(aminium cationic radicals 1. ESR and UV-vis spectrum indicated a N-centered radical generation. Magnetic properties of polyradicals 1 were examined by SQUID measurement, which displayed a chemical stability and an intramolecular ferromagnetic interaction of the polyradical.",

keywords = "Aminium radical, High-spin molecule, Palladium-coupling, Radical polymer, Triphenylene",

author = "Takeshi Ibe and Eiji Fukuzaki and Hiroyuki Nishide",

year = "2005",

language = "English",

volume = "54",

pages = "4103",

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note = "54th SPSJ Symposium on Macromolecules ; Conference date: 20-09-2005 Through 22-09-2005",

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TY - GEN

T1 - Synthesis of poly[(p-anisylamino)-tris(hexyloxy) triphenylene] and its magnetic property

AU - Ibe, Takeshi

AU - Fukuzaki, Eiji

AU - Nishide, Hiroyuki

PY - 2005

Y1 - 2005

N2 - For the creation of a purely organic ferromagnet, π-conjugated polyradicals satisfying nonKekulé and non-disjoint structure have been synthesized. In this report, the triaminotriphenylene derivative 2 and the tribromotriphenylene derivative 3 were synthesized from 2-methoxyphenol via 5 and 6 steps. High molecular weight aromatic polyamines 4 were prepared by palladium-catalyzed polycondensation. Polycondensation conditions, such as catalytic ligand, solvent, base, and feed ratio of the comonomers were optimized. The polyamines 4 were oxidized to the corresponding poly(aminium cationic radicals 1. ESR and UV-vis spectrum indicated a N-centered radical generation. Magnetic properties of polyradicals 1 were examined by SQUID measurement, which displayed a chemical stability and an intramolecular ferromagnetic interaction of the polyradical.

AB - For the creation of a purely organic ferromagnet, π-conjugated polyradicals satisfying nonKekulé and non-disjoint structure have been synthesized. In this report, the triaminotriphenylene derivative 2 and the tribromotriphenylene derivative 3 were synthesized from 2-methoxyphenol via 5 and 6 steps. High molecular weight aromatic polyamines 4 were prepared by palladium-catalyzed polycondensation. Polycondensation conditions, such as catalytic ligand, solvent, base, and feed ratio of the comonomers were optimized. The polyamines 4 were oxidized to the corresponding poly(aminium cationic radicals 1. ESR and UV-vis spectrum indicated a N-centered radical generation. Magnetic properties of polyradicals 1 were examined by SQUID measurement, which displayed a chemical stability and an intramolecular ferromagnetic interaction of the polyradical.

KW - Aminium radical

KW - High-spin molecule

KW - Palladium-coupling

KW - Radical polymer

KW - Triphenylene

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M3 - Conference contribution

AN - SCOPUS:33645648587

VL - 54

SP - 4103

BT - Polymer Preprints, Japan

T2 - 54th SPSJ Symposium on Macromolecules

Y2 - 20 September 2005 through 22 September 2005

ER -

Synthesis of poly[(p-anisylamino)-tris(hexyloxy) triphenylene] and its magnetic property

Abstract

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Keywords

ASJC Scopus subject areas

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