Electronic Structure of Genomic DNA: A Photoemission and X-ray Absorption Study

被引：27

作者：

Kummer, Kurt ^{[3
]}

Vyalikh, Denis V. ^{[3
]}

Gavrila, Gianina ^{[4
]}

Preobrajenski, Alexei B. ^{[5
]}

Kick, Alfred ^{[1
,2
]}

Boensch, Martin ^{[1
,2
]}

Mertig, Michael ^{[1
,2
]}

Molodtsov, Serguei L. ^{[3
]}

机构：

[1] Tech Univ Dresden, Max Bergmann Zentrum Biomat, Arbeitsgrp BioNanotechnol & Strukturbildung, D-01062 Dresden, Germany

[2] Tech Univ Dresden, Inst Werkstoffwissensch, D-01062 Dresden, Germany

[3] Tech Univ Dresden, Inst Festkorperphys, D-01062 Dresden, Germany

[4] Helmholtz Zentrum Berlin Mat & Energie Speicherri, D-12489 Berlin, Germany

[5] Lund Univ, Max Lab, S-22100 Lund, Sweden

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2010年 / 114卷 / 29期

关键词：

FINE-STRUCTURE; PHOTOELECTRON-SPECTROSCOPY; MERCAPTOHEXANOL MONOLAYERS; EXCITATION-SPECTRA; CHARGE-TRANSFER; GOLD SURFACES; K-EDGE; MOLECULES; NUCLEOBASES; NITROGEN;

D O I：

10.1021/jp1013237

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electronic structure of genomic DNA has been comprehensively characterized by synchrotron-based X-ray absorption and X-ray photoelectron spectroscopy. Both unoccupied and occupied states close to the Fermi level have been unveiled and attributed to particular sites within the DNA structure. A semiconductor-like electronic structure with a band gap of similar to 2.6 eV has been found at which the pi and pi* orbitals of the nucleobase stack make major contributions to the highest occupied and lowest unoccupied molecular orbitals, respectively, in agreement with previous theoretical predictions.

引用

页码：9645 / 9652

页数：8

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