Synthesis of triphenylene-linked aromatic polyaminium cationic radicals and their spin alignment

Takeshi Ibe; Shu Kaiho; Hiroyuki Nishide

Synthesis of triphenylene-linked aromatic polyaminium cationic radicals and their spin alignment

Takeshi Ibe^*, Shu Kaiho, 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

Triphenylene core has a planar π-conjugated structure which is expected to allow radical generation at low oxidation potential and strong ferromagnetic interaction of the radicals' unpaired electrons. We reported the triradical, 2,6,10-tris(dianisylaminium)-3,7,11-tris(hexyloxy)triphenylene, with a quartet state (S = 3/2) at room temperature[1]. Connection of the module by satisfying non-Kekule and non-disjoint coupling fashion is supposed to yield a stable, high-spin purely organic polyradical. In this report, we designed and have synthesized poly(aminium triphenylene) 1^+̇ and poly(naphthylaminium triphenylene) 2^+̇ by extending the triradical. Spin alignment of 1^+̇ and 2^+̇ was discussed by SQUID measurement. It was expected that the quartet triaminium triphenylene module is effectively connected through the triphenylene and naphthalene structures.

Original language	English
Title of host publication	Polymer Preprints, Japan
Pages	3797-3798
Number of pages	2
Volume	55
Edition	2
Publication status	Published - 2006
Event	55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama Duration: 2006 Sept 20 → 2006 Sept 22

Other

Other	55th Society of Polymer Science Japan Symposium on Macromolecules
City	Toyama
Period	06/9/20 → 06/9/22

Keywords

Aminium radical
High-spin molecule
Palladium coupling
Polycondensation
Triphenylene

ASJC Scopus subject areas

Engineering(all)

Cite this

@inproceedings{fb8e8aebd0784080ba6b427685927b6c,

title = "Synthesis of triphenylene-linked aromatic polyaminium cationic radicals and their spin alignment",

abstract = "Triphenylene core has a planar π-conjugated structure which is expected to allow radical generation at low oxidation potential and strong ferromagnetic interaction of the radicals' unpaired electrons. We reported the triradical, 2,6,10-tris(dianisylaminium)-3,7,11-tris(hexyloxy)triphenylene, with a quartet state (S = 3/2) at room temperature[1]. Connection of the module by satisfying non-Kekule and non-disjoint coupling fashion is supposed to yield a stable, high-spin purely organic polyradical. In this report, we designed and have synthesized poly(aminium triphenylene) 1{\.+} and poly(naphthylaminium triphenylene) 2{\.+} by extending the triradical. Spin alignment of 1{\.+} and 2{\.+} was discussed by SQUID measurement. It was expected that the quartet triaminium triphenylene module is effectively connected through the triphenylene and naphthalene structures.",

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

author = "Takeshi Ibe and Shu Kaiho and Hiroyuki Nishide",

year = "2006",

language = "English",

volume = "55",

pages = "3797--3798",

booktitle = "Polymer Preprints, Japan",

edition = "2",

note = "55th Society of Polymer Science Japan Symposium on Macromolecules ; Conference date: 20-09-2006 Through 22-09-2006",

}

TY - GEN

T1 - Synthesis of triphenylene-linked aromatic polyaminium cationic radicals and their spin alignment

AU - Ibe, Takeshi

AU - Kaiho, Shu

AU - Nishide, Hiroyuki

PY - 2006

Y1 - 2006

N2 - Triphenylene core has a planar π-conjugated structure which is expected to allow radical generation at low oxidation potential and strong ferromagnetic interaction of the radicals' unpaired electrons. We reported the triradical, 2,6,10-tris(dianisylaminium)-3,7,11-tris(hexyloxy)triphenylene, with a quartet state (S = 3/2) at room temperature[1]. Connection of the module by satisfying non-Kekule and non-disjoint coupling fashion is supposed to yield a stable, high-spin purely organic polyradical. In this report, we designed and have synthesized poly(aminium triphenylene) 1+̇ and poly(naphthylaminium triphenylene) 2+̇ by extending the triradical. Spin alignment of 1+̇ and 2+̇ was discussed by SQUID measurement. It was expected that the quartet triaminium triphenylene module is effectively connected through the triphenylene and naphthalene structures.

AB - Triphenylene core has a planar π-conjugated structure which is expected to allow radical generation at low oxidation potential and strong ferromagnetic interaction of the radicals' unpaired electrons. We reported the triradical, 2,6,10-tris(dianisylaminium)-3,7,11-tris(hexyloxy)triphenylene, with a quartet state (S = 3/2) at room temperature[1]. Connection of the module by satisfying non-Kekule and non-disjoint coupling fashion is supposed to yield a stable, high-spin purely organic polyradical. In this report, we designed and have synthesized poly(aminium triphenylene) 1+̇ and poly(naphthylaminium triphenylene) 2+̇ by extending the triradical. Spin alignment of 1+̇ and 2+̇ was discussed by SQUID measurement. It was expected that the quartet triaminium triphenylene module is effectively connected through the triphenylene and naphthalene structures.

KW - Aminium radical

KW - High-spin molecule

KW - Palladium coupling

KW - Polycondensation

KW - Triphenylene

UR - http://www.scopus.com/inward/record.url?scp=33846179691&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846179691&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:33846179691

VL - 55

SP - 3797

EP - 3798

BT - Polymer Preprints, Japan

T2 - 55th Society of Polymer Science Japan Symposium on Macromolecules

Y2 - 20 September 2006 through 22 September 2006

ER -

Synthesis of triphenylene-linked aromatic polyaminium cationic radicals and their spin alignment

Abstract

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Keywords

ASJC Scopus subject areas

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