Surface Raman Spectroscopy of the Interface of Tris-(8-hydroxyquinoline) Aluminum with Mg

被引：23

作者：

Davis, Robert J. ^{[1
]}

Pemberton, Jeanne E. ^{[1
]}

机构：

[1] Univ Arizona, Dept Chem, Tucson, AZ 85721 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 29期

基金：

美国国家科学基金会;

关键词：

LIGHT-EMITTING-DEVICES; MAGNESIUM ANTHRACENE SYSTEMS; WORK FUNCTION; PHOTOEMISSION-SPECTROSCOPY; VIBRATIONAL SPECTROSCOPY; POSSIBLE ISOMERIZATION; QUINOLINE) ALUMINUM; AMORPHOUS-CARBON; SPECTRA; ALQ(3);

D O I：

10.1021/ja808021d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Surface Raman spectroscopy in ultrahigh vacuum is used to interrogate interfaces formed between tris-(8-hydroxyquinoline) aluminum (Alq(3)) and vapor-deposited Mg. The Raman spectral results for deposition of Mg mass thicknesses between 5 and 20 angstrom indicate formation of a complex interfacial region composed primarily of Mg-Alq(3) adducts and small-grained amorphous or nanocrystalline graphite, the presence of which may have a significant effect on the electronic properties of this metal-organic interface. The observed shifts in nu(ring), nu(C-N), nu(Al-N), and nu(Al-O) modes along with the appearance of nu(Mg-C) and nu(Mg-O) modes suggest a structure for the Mg-Alq(3) adduct in which Mg is bound to the O and C atoms of Alq(3). In addition, several intense, broad modes are observed that are consistent with partial graphitization of the Alq(3) film.

引用

收藏

页码：10009 / 10014

页数：6

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