期刊
CARBON
卷 47, 期 4, 页码 967-973出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2008.11.051
关键词
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资金
- Outstanding Youth Fund [10125523]
- National Natural Science Foundation of China [10490191, 10734070, NSFC30270394, NSFC90306004]
- Chinese Academy of Sciences [KJCX2-SW-N11]
- US Department of Energy [DE-AC02-05CH11231]
- Italian Ministry Foreign Affairs
We applied X-ray absorption near edge structure (XANES) spectroscopy to investigate the adsorption of proteins onto single-walled carbon nanotubes (SWCNTs). Specific XANES spectral features such as peptide C=O bonds in proteins were recognized and found to be affected by the corresponding aromatic structure of SWCNTs. Experimental data combined with first-principle calculation of the investigated nano-complex allow the understanding of adsorption mechanism and reveal that an interface interaction occurs leading to precise structural distortions of proteins. The study also demonstrates that XANES is a powerful tool to characterize structural details of proteins at the interface of complex systems. (C) 2008 Elsevier Ltd. All rights reserved.
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