Premium
Thermodynamics for the Formation of Double‐Stranded DNA–Single‐Walled Carbon Nanotube Hybrids
Author(s) -
Shiraki Tomohiro,
Tsuzuki Akiko,
Toshimitsu Fumiyuki,
Nakashima Naotoshi
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201504533
Subject(s) - carbon nanotube , dna , molecule , materials science , melting temperature , oligomer , carbon fibers , chemistry , crystallography , thermodynamics , nanotechnology , composite number , polymer chemistry , organic chemistry , physics , biochemistry , composite material
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 ( T m ) of the DNA oligomer. No such T m dependency was measured, owing to high T m in the NF‐κB decoy DNA and no T m in the ss‐DNA.