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

Research output: Contribution to journalArticle

6 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)165-174
Number of pages10
JournalNonlinear Optics Quantum Optics
Volume35
Issue number1-3
Publication statusPublished - 2006

Fingerprint

Magnetic properties
DNA
deoxyribonucleic acid
magnetic properties
A-Form DNA
Intercalating Agents
SQUIDs
Free Radicals
Magnets
Paramagnetic resonance
Magnetization
Free radicals
free radicals
magnets
magnetization
room temperature
Temperature
interactions

Keywords

  • Au(III)
  • Complexation
  • EPR
  • Magnetism
  • Modified DNA
  • Natural DNA
  • SQUID
  • Stable organic free radical

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics

Cite this

Lee, C. H., Do, E. D., Kwon, Y. W., Choi, D. H., Jin, J. I., Oh, D. K., ... Kurata, T. (2006). Magnetic properties of natural and modified DNAs. Nonlinear Optics Quantum Optics, 35(1-3), 165-174.

Magnetic properties of natural and modified DNAs. / Lee, Chang Hoon; Do, Eui Doo; Kwon, Young Wan; Choi, Dong Hoon; Jin, Jung Il; Oh, Dong Keun; Nishide, Hiroyuki; Kurata, Takashi.

In: Nonlinear Optics Quantum Optics, Vol. 35, No. 1-3, 2006, p. 165-174.

Research output: Contribution to journalArticle

Lee, CH, Do, ED, Kwon, YW, Choi, DH, Jin, JI, Oh, DK, Nishide, H & Kurata, T 2006, 'Magnetic properties of natural and modified DNAs', Nonlinear Optics Quantum Optics, vol. 35, no. 1-3, pp. 165-174.
Lee CH, Do ED, Kwon YW, Choi DH, Jin JI, Oh DK et al. Magnetic properties of natural and modified DNAs. Nonlinear Optics Quantum Optics. 2006;35(1-3):165-174.
Lee, Chang Hoon ; Do, Eui Doo ; Kwon, Young Wan ; Choi, Dong Hoon ; Jin, Jung Il ; Oh, Dong Keun ; Nishide, Hiroyuki ; Kurata, Takashi. / Magnetic properties of natural and modified DNAs. In: Nonlinear Optics Quantum Optics. 2006 ; Vol. 35, No. 1-3. pp. 165-174.
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