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http://dx.doi.org/10.5012/bkcs.2011.32.7.2217

Selective DNA Adsorption on Layered Double Hydroxide Nanoparticles  

Kim, Kyoung-Min (Department of Chemistry and Medical Chemistry, College of Science and Technology, Yonsei University)
Park, Chung-Berm (National Institute of Horticultural & Herbal Science (NIHHS) of RDA)
Choi, Ae-Jin (National Institute of Horticultural & Herbal Science (NIHHS) of RDA)
Choy, Jin-Ho (Center for Intelligent Nano Bio Materials (CINBM), Department of Bio Inspired Science and Department of Chemistry and Nano Science, Ewha Womans University)
Oh, Jae-Min (Department of Chemistry and Medical Chemistry, College of Science and Technology, Yonsei University)
Publication Information
Bulletin of the Korean Chemical Society / v.32, no.7, 2011 , pp. 2217-2221 More about this Journal
Abstract
We investigated the selective deoxyribonucleic acid (DNA) adsorption on layered double hydroxide (LDH) nanoparticles via studying the interaction between positively charged LDH nanoparticle as adsorbent and negatively charged adsorbates such as methyl orange (MO), fluorescein (FL), and DNA strands. The size controlled LDH $(Mg_{0.78}Al_{0.22}(OH)_2(CO_3)_{0.11}{\cdot}mH_2O)$ was prepared by conventional coprecipitation method, followed by the hydrothermal treatment. According to the adsorption isotherms, the adsorbed amounts of MO and FL were similar, however, that of DNA were much larger. The adsorption behaviors were well fitted to Freundlich adsorption model. The concentration dependent adsorption behavior on LDH surface was described in order to verify the selective DNA separation ability. The result showed that the LDH has advantages in selective adsorption of DNA competing with single molecular anions.
Keywords
Layered double hydroxide; Deoxyribonucleic acid; Adsorption; Separation;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
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