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Light‐Induced Electron Transfer Through DNA‐Decorated Single‐Walled Carbon Nanotubes
Author(s) -
Li Yongfeng,
Kaneko Toshiro,
Hirotsu Yu,
Hatakeyama Rikizo
Publication year - 2010
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200901759
Subject(s) - carbon nanotube , ambipolar diffusion , guanine , electron transfer , nanotechnology , dna , transistor , electron , materials science , cytosine , electron transport chain , chemistry , optoelectronics , photochemistry , voltage , physics , nucleotide , biochemistry , quantum mechanics , gene
Single‐walled carbon nanotubes (SWNTs) decorated with two types of single‐stranded DNA (ssDNA), with 30 adenine or 15 adenine/15 guanine residues (AG 30 ), exhibit ambipolar or n‐type transport characteristics, respectively. The electron‐transfer properties of the ssDNA/SWNTs (see picture) are sensitive to light, and the response of field‐effect transistors is reflected in a shift of the threshold voltage, thus demonstrating a photoswitching effect.
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