title: Thermodynamics for the Formation of Double-Stranded DNA-Single-Walled Carbon Nanotube Hybrids.
abstract: For the first time, the thermodynamics are described for the formation of double-stranded DNA (ds-DNA)-single-walled carbon nanotube (SWNT) hybrids. This treatment is applied to the exchange reaction of sodium cholate (SC) molecules on SWNTs and the ds-DNAs d(A)20 -d(T)20 and nuclear factor (NF)-κB decoy. UV/Vis/near-IR spectroscopy with temperature variations was used for analyzing the exchange reaction on the SWNTs with four different chiralities: (n,m)=(8,3), (6,5), (7,5), and (8,6). Single-stranded DNAs (ss-DNAs), including d(A)20 and d(T)20, are also used for comparison. The d(A)20-d(T)20 shows a drastic change in its thermodynamic parameters around the melting temperature (Tm ) of the DNA oligomer. No such Tm dependency was measured, owing to high Tm in the NF-κB decoy DNA and no Tm in the ss-DNA.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Shiraki
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
authors.forename: Akiko
authors.initials: A
authors.lastname: Tsuzuki
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
authors.forename: Fumiyuki
authors.initials: F
authors.lastname: Toshimitsu
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan. nakashima-tcm@mail.cstm.kyushu-u.ac.jp.|International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan. nakashima-tcm@mail.cstm.kyushu-u.ac.jp.
authors.forename: Naotoshi
authors.initials: N
authors.lastname: Nakashima
mesh_terms: D004247:DNA / Q000737:chemistry*; D004277:DNA, Single-Stranded / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009838:Oligodeoxyribonucleotides / Q000737:chemistry*; D019265:Spectroscopy, Near-Infrared; D013696:Temperature; D013816:Thermodynamics
chemical_list: D004277:DNA, Single-Stranded; C468119:NF-kappaB decoy; D037742:Nanotubes, Carbon; D009838:Oligodeoxyribonucleotides; D004247:DNA
keywords: DNA; exchange reactions; molecular mechanics; nanotubes; thermodynamics