期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 132, 期 32, 页码 10964-10966出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja102673m
关键词
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资金
- Pioneer R&D Program for Converging Technology [M10711270001-08M1127-00110]
- WCU (World Class University) [R31-2008-000-10083-0]
- Center for Nanotubes and Nanostructured Composites
- Ministry of Education, Science and Technology (MEST) of Korea
It has been known that single-strand DNA wraps around a single-walled carbon nanotube (SWNT) by pi-stacking. In this paper it is demonstrated that such DNA is dissociated from the SWNT by Watson Crick base-pairing with a complementary sequence. Measurement of field effect transistor characteristics indicates a shift of the electrical properties as a result of this unwrapping event. We further confirm the suggested process through Raman spectroscopy and gel electrophoresis. Experimental results are verified in view of atomistic mechanisms with molecular dynamics simulations and binding energy analyses.
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