Spectroscopic evidence of strong π-π interorbital interaction in a lead-phthalocyanine bilayer film attributed to the dimer nanostructure

被引：52

作者：

Kera, Satoshi

Fukagawa, Hirohiko

Kataoka, Takashi

Hosoumi, Shunsuke

Yamane, Hiroyuki

Ueno, Nobuo

机构：

[1] Chiba Univ, Grad Sch Sci & Technol, Inage Ku, Chiba 2638522, Japan

[2] Chiba Univ, Fac Engn, Inage Ku, Chiba 2638522, Japan

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.75.121305

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate spectroscopic evidence of 2t level splitting of the highest occupied molecular orbital (HOMO) state, which is characterized by twice the intermolecular transfer integral t, with ultraviolet photoelectron spectroscopy in a well-ordered bilayer of lead-phthalocyanine deposited on graphite. The HOMO state splits clearly by 2t=0.35 eV upon bilayer formation at 295 K and the splitting increases to 0.41 eV at 47 K. The splitting is ascribed to dimer nanostructures with antiparallel molecular electric dipoles.

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页数：4

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