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Träfflista för sökning "WFRF:(Xie Sishen) "

Search: WFRF:(Xie Sishen)

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1.
  • Gao, Bin, et al. (author)
  • Studies of bromine modified single-walled carbon nanotubes using photoelectron spectroscopy and density-functional theory
  • 2006
  • In: Radiation Physics and Chemistry. - : Elsevier BV. - 0969-806X .- 1879-0895. ; 75:11, s. 1939-1942
  • Journal article (peer-reviewed)abstract
    • Many applications based on single-walled carbon nanotubes (SWNTs) require chemical modification of carbon nanotube to optimize the functionalities of the device. In this contribution we discuss the properties of SWNTs immersed in a hydrobromic acid (HBr) solution. Changes of atomic and electronic structures of bromine modified SWNTs were investigated using photoelectron spectroscopy (PES). Spectra of SWNTs before and after immersion in the HBr solution exhibit different features. To understand the mechanism of interaction between SWNTs and bromine, we performed density-functional theory calculations to reveal the structural changes, adsorption energy and chemical bonding information of SWNTs interacting with bromine. In addition, based on the Gelius model, from the molecular orbitals (MOs), we calculated ultraviolet photoelectron spectra (UPS) of SWNTs with and without functionalizing and compared them with the experiment. The present study is a first step in the understanding of the functionalization mechanism of carbon nanotubes.
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2.
  • Zhong, Jun, et al. (author)
  • Bio-nano interaction of proteins adsorbed on single-walled carbon nanotubes
  • 2009
  • In: Carbon. - : Elsevier BV. - 0008-6223 .- 1873-3891. ; 47:4, s. 967-973
  • Journal article (peer-reviewed)abstract
    • 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.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Luo, Yi (2)
Song, Li (2)
Gao, Bin (2)
Zhong, Jun (2)
Xie, Sishen (2)
Meng, Jie (1)
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Guo, Jinghua (1)
Xu, Haiyan (1)
Dong, Yuhui (1)
Wu, ZiYu (1)
Wu, Zi-Yu (1)
Qian, Haijie (1)
Chu, Wangsheng (1)
Marcelli, Augusto (1)
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University
Royal Institute of Technology (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (1)

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