淡江大學機構典藏:Item 987654321/58295
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 62830/95882 (66%)
Visitors : 4073591      Online Users : 845
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
    •  Adv. Search
    Home ‧ Login ‧ Upload ‧ Help ‧ About ‧ Administer Goto mobile version


    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/58295


    Title: Electronic structure study of the bases in DNA duplexes by in situ photon-in/photon-out soft X-ray spectroscopy
    Authors: Guo, J. H.;Kastanov, S.;Soderstrom, J.;Glans, P. A.;West, M.;Learmonth, T.;Chiou, J. W.;Luo, Y.;Nordgren, J.;Smith, K.;Pong, W. F.;Cheng, H.;Griffiss, J. M.
    Contributors: 淡江大學物理學系
    Keywords: Soft X-ray absorption and emission spectroscopy;RIXS;Electronic structure;DNA;G–C pair;A–T pair
    Date: 2010-08
    Issue Date: 2011-09-30 22:00:29 (UTC+8)
    Publisher: Amsterdam: Elsevier BV
    Abstract: Understanding protein functionality is of fundamental importance in biochemistry. Soft X-ray transitions, where the core-level vacancies are filled by the valence-orbital electrons, give direct information about the chemical bonding. Soft X-ray absorption and emission study of poly(dG) -poly(dC) in aqueous solutions can elucidate the relation between the structure and functionality of proteins. We report the N K-edge soft X-ray absorption (XAS) and resonant soft X-ray emission spectroscopy (XES) to characterize the electronic structure near the Fermi level of DNA duplexes to specify the charge migration mechanism. Since N atoms are included in only bases in DNA duplexes, the XES spectra excited from N 1s to unoccupied states purely extract the electronic orbital features of the bases in DNA. The fact that N atoms in different bonding environments form well-defined structure has been determined. The experimental findings provide the evidence for the charge-hopping and/or charge-transfer effects in understanding of electric conduction in DNA duplexes when electrons pass through the π* states of DNA bases.
    Relation: Journal of Electron Spectroscopy and Related Phenomena 181(2-3), pp.197–201
    DOI: 10.1016/j.elspec.2010.05.014
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

    Files in This Item:

    File Description SizeFormat
    0368-2048_181(2-3)p197-201.pdf548KbAdobe PDF1View/Open
    index.html0KbHTML342View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback