Carbon K-edge X-ray Raman spectroscopy supports simple, yet powerful description of aromatic hydrocarbons and asphaltenes

被引：74

作者：

Bergmann, U

Groenzin, H

Mullins, OC ^{[4
]}

Glatzel, P

Fetzer, J

Cramer, SP

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA

[2] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA

[3] ChevronTexaco Res & Technol Co, Richmond, CA 94802 USA

[4] Schlumberger Doll Res Ctr, Ridgefield, CT 06877 USA

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 369卷 / 1-2期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1016/S0009-2614(02)02003-1

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 nature and distribution of electron density in polycyclic aromatic hydrocarbons (PAHs) determines PAH properties. Theoretical investigations have yielded simple heuristics to describe the pi electron distribution in complex PAHs, but systematic experimental support is lacking. Here, we show that using the novel approach of carbon K-edge X-ray Raman spectroscopy (XRRS), carbon type in PAHs can be probed directly. Our unique detector has enabled application of XRRS on PAHs and asphaltenes. XRRS results directly support the powerful 'aromatic sextet' description of PAHs. Also, XRRS is shown to establish geometries of aromatic ring systems in asphaltenes, a complex natural carbonaceous material. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：184 / 191

页数：8

共 35 条

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