Digitized Charge Transfer Magnitude Determined by Metal鈥揙rganic Coordination Number
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- 作者：Hung-Hsiang Yang ; Yu-Hsun Chu ; Chun-I Lu ; Tsung-Han Yang ; Kai-Jheng Yang ; Chao-Cheng Kaun ; Germar Hoffmann ; Minn-Tsong Lin
- 刊名：ACS Nano
- 出版年：2013
- 出版时间：March 26, 2013
- 年：2013
- 卷：7
- 期：3
- 页码：2814-2819
- 全文大小：1085K
- 年卷期：v.7,no.3(March 26, 2013)
- ISSN：1936-086X
文摘
Well-ordered metal鈥搊rganic nanostructures of Fe-PTCDA (perylene-3,4,9,10-tetracarboxylic-3,4,9,10-dianhydride) chains and networks are grown on a Au(111) surface. These structures are investigated by high-resolution scanning tunneling microscopy. Digitized frontier orbital shifts are followed in scanning tunneling spectroscopy. By comparing the frontier energies with the molecular coordination environments, we conclude that the specific coordination affects the magnitude of charge transfer onto each PTCDA in the Fe-PTCDA hybridization system. A basic model is derived, which captures the essential underlying physics and correlates the observed energetic shift of the frontier orbital with the charge transfer.