Infrared electronic absorption in a single-component molecular metal

被引:45
作者
Kobayashi, A
Sasa, M
Suzuki, W
Fujiwara, E
Tanaka, H
Tokumoto, M
Okano, Y
Fujiwara, H
Kobayashi, H [1 ]
机构
[1] JST, Inst Mol Sci, Okazaki, Aichi 4448585, Japan
[2] CREST, Okazaki, Aichi 4448585, Japan
[3] Univ Tokyo, Res Ctr Spectrochem, Grad Sch Sci, Bunkyo Ku, Tokyo 1130033, Japan
[4] AIST, Nanotechnol Res Inst, Tsukuba, Ibaraki 3058568, Japan
[5] JST, CREST, Tsukuba, Ibaraki 3058568, Japan
关键词
D O I
10.1021/ja0379767
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The infrared spectra of the crystal of transition metal complex molecules with extended-TTF ligands, Ni(tmdt)2, which is the first single-component molecular metal that has a stable metallic state even at low temperatures, exhibited an extremely low-energy electronic absorption around 2200 cm-1 (tmdt = trimethylenetetrathiafulvalenedithiolate). The systematic shift of the absorption peaks for molecules similar to Ni(tmdt)2, which range from metallic to semiconducting crystals, shows that the single-component molecular conductors are composed of molecules with unprecedentedly small HOMO-LUMO gaps. Copyright © 2004 American Chemical Society.
引用
收藏
页码:426 / 427
页数:2
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