Chiral Conformation at a Molecular Level of a Propeller-Like Open-Shell Molecule on Au(111)
详细信息 查看全文
- 作者：Federico Grillo ; Veronica Mugnaini ; Malena Oliveros ; Steve M. Francis ; Deung-Jang Choi ; Mircea V. Rastei ; Laurent Limot ; Cinzia Cepek ; Maddalena Pedio ; Stefan T. Bromley ; Neville V. Richardson ; Jean-Pierre Bucher ; Jaume Veciana
- 刊名：The Journal of Physical Chemistry Letters
- 出版年：2012
- 出版时间：June 7, 2012
- 年：2012
- 卷：3
- 期：11
- 页码：1559-1564
- 全文大小：332K
- 年卷期：v.3,no.11(June 7, 2012)
- ISSN：1948-7185
文摘
A key stage in engineering molecular functional organizations is represented by controlling the supramolecular assembly of single molecular building blocks, tectons, into ordered networks. Here, we show how an open-shell, propeller-like molecule has been deposited under UHV conditions on Au(111) and its supramolecular organization characterized by scanning tunneling microscopy (STM). Racemic islands were observed at room temperature, and their chirality was imaged at the molecular level at low temperature. Modeling further suggests that the observed chirally alternating ordering dominated by intermolecular interactions is energetically favored. Electron paramagnetic resonance and ultraviolet photoemission spectroscopy evidences suggest that the supramolecular networks may preserve the open-shell character of the tecton. These results represent a fundamental step forward toward the engineering of purely organic spintronic devices.