Magnetic properties of natural and modified DNAs

Chang Hoon Lee; Eui Doo Do; Young Wan Kwon; Dong Hoon Choi; Jung Il Jin; Dong Keun Oh; Hiroyuki Nishide; Takashi Kurata

Magnetic properties of natural and modified DNAs

Chang Hoon Lee^*, Eui Doo Do, Young Wan Kwon, Dong Hoon Choi, Jung Il Jin, Dong Keun Oh, Hiroyuki Nishide, Takashi Kurata

^*この研究の対応する著者

理工学術院総合研究所

研究成果: Article › 査読

8 被引用数 (Scopus)

抄録

Natural DNAs in dry state, i.e., A-DNAs, when intercalated with low levels of stable organic free radicals or complexed with low levels of Au(III), are attracted at room temperature to commercial magnets, whereas those containing high levels of intercalators or Au(III) are not. This surprising observation is explained by the EPR spectra and SQUID measurement of magnetization of the modified DNAs. It is conjectured that A-DNAs are morphologically heterogeneous containing ordered and disordered regions. The ordered regions appear to strongly mediate magnetic interactions between spins through their π_z-stacked structures. When the modified DNAs are wet or hydrated, they behave diamagnetically.

本文言語	English
ページ（範囲）	165-174
ページ数	10
ジャーナル	Nonlinear Optics Quantum Optics
巻	35
号	1-3
出版ステータス	Published - 2006

ASJC Scopus subject areas

制御およびシステム工学
凝縮系物理学

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引用スタイル

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title = "Magnetic properties of natural and modified DNAs",

abstract = "Natural DNAs in dry state, i.e., A-DNAs, when intercalated with low levels of stable organic free radicals or complexed with low levels of Au(III), are attracted at room temperature to commercial magnets, whereas those containing high levels of intercalators or Au(III) are not. This surprising observation is explained by the EPR spectra and SQUID measurement of magnetization of the modified DNAs. It is conjectured that A-DNAs are morphologically heterogeneous containing ordered and disordered regions. The ordered regions appear to strongly mediate magnetic interactions between spins through their πz-stacked structures. When the modified DNAs are wet or hydrated, they behave diamagnetically.",

keywords = "Au(III), Complexation, EPR, Magnetism, Modified DNA, Natural DNA, SQUID, Stable organic free radical",

author = "Lee, {Chang Hoon} and Do, {Eui Doo} and Kwon, {Young Wan} and Choi, {Dong Hoon} and Jin, {Jung Il} and Oh, {Dong Keun} and Hiroyuki Nishide and Takashi Kurata",

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language = "English",

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journal = "Nonlinear Optics Quantum Optics",

issn = "1543-0537",

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TY - JOUR

T1 - Magnetic properties of natural and modified DNAs

AU - Lee, Chang Hoon

AU - Do, Eui Doo

AU - Kwon, Young Wan

AU - Choi, Dong Hoon

AU - Jin, Jung Il

AU - Oh, Dong Keun

AU - Nishide, Hiroyuki

AU - Kurata, Takashi

PY - 2006

Y1 - 2006

N2 - Natural DNAs in dry state, i.e., A-DNAs, when intercalated with low levels of stable organic free radicals or complexed with low levels of Au(III), are attracted at room temperature to commercial magnets, whereas those containing high levels of intercalators or Au(III) are not. This surprising observation is explained by the EPR spectra and SQUID measurement of magnetization of the modified DNAs. It is conjectured that A-DNAs are morphologically heterogeneous containing ordered and disordered regions. The ordered regions appear to strongly mediate magnetic interactions between spins through their πz-stacked structures. When the modified DNAs are wet or hydrated, they behave diamagnetically.

AB - Natural DNAs in dry state, i.e., A-DNAs, when intercalated with low levels of stable organic free radicals or complexed with low levels of Au(III), are attracted at room temperature to commercial magnets, whereas those containing high levels of intercalators or Au(III) are not. This surprising observation is explained by the EPR spectra and SQUID measurement of magnetization of the modified DNAs. It is conjectured that A-DNAs are morphologically heterogeneous containing ordered and disordered regions. The ordered regions appear to strongly mediate magnetic interactions between spins through their πz-stacked structures. When the modified DNAs are wet or hydrated, they behave diamagnetically.

KW - Au(III)

KW - Complexation

KW - EPR

KW - Magnetism

KW - Modified DNA

KW - Natural DNA

KW - SQUID

KW - Stable organic free radical

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SN - 1543-0537

VL - 35

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JO - Nonlinear Optics Quantum Optics

JF - Nonlinear Optics Quantum Optics

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Magnetic properties of natural and modified DNAs

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ASJC Scopus subject areas

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