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Photochemical Synthesis of Electrically Conductive CdS Nanowires on DNA Scaffolds
Author(s) -
Kundu S.,
Liang H.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200702162
Subject(s) - materials science , nanowire , ohmic contact , electrical conductor , nanoparticle , nanotechnology , dna , electrically conductive , electrode , characterization (materials science) , composite number , phase (matter) , chemical engineering , optoelectronics , composite material , organic chemistry , chemistry , layer (electronics) , biology , engineering , genetics
Electrically conductive CdS nanowires are fabricated via a photochemical synthesis route using DNA as a scaffold. The nanowires are found to be several micrometers long and are either 40 – 50 nm in diameter or 70 – 80 in diameter when synthesized using solution‐suspended or immobilized DNA, respectively. Various characterization methods showed that the wires consist of one continuous phase and exhibit Ohmic behavior similar to electrodes. The one‐step process described herein does not perturb the conformation of the DNA chain and may be extended to the synthesis of other semiconducting composite nanoparticles.