期刊論文
| 學年 | 99 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2010-08-01 |
| 作品名稱 | Electronic structure study of the bases in DNA duplexes by in situ photon-in/photon-out soft X-ray spectroscopy |
| 作品名稱（其他語言） | |
| 著者 | 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. |
| 單位 | 淡江大學物理學系 |
| 出版者 | Amsterdam: Elsevier BV |
| 著錄名稱、卷期、頁數 | Journal of Electron Spectroscopy and Related Phenomena 181(2-3), pp.197–201 |
| 摘要 | 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. |
| 關鍵字 | Soft X-ray absorption and emission spectroscopy; RIXS; Electronic structure; DNA; G–C pair; A–T pair |
| 語言 | en |
| ISSN | 0368-2048 |
| 期刊性質 | 國外 |
| 收錄於 | SCI EI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | |
| 國別 | NLD |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/58295 ) |