Bio-nano interaction of proteins adsorbed on single-walled carbon nanotubes
2009 (English)In: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 47, no 4, 967-973 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2009. Vol. 47, no 4, 967-973 p.
absorption fine-structure, inner-shell excitation, glycyl-glycine, spectroscopy, functionalization, immobilization, approximation, adsorption, energy
IdentifiersURN: urn:nbn:se:kth:diva-18247DOI: 10.1016/j.carbon.2008.11.051ISI: 000264252900005ScopusID: 2-s2.0-59649125892OAI: oai:DiVA.org:kth-18247DiVA: diva2:336293
QC 201005252010-08-052010-08-052011-01-28Bibliographically approved