Photoisomerization of an Azobenzene on the Bi(111) Surface

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• 作者：Christopher Bronner ; Beate Priewisch ; Karola Rück-Braun ; Petra Tegeder
• 刊名：Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：December 27, 2013
• 年：2013
• 卷：117
• 期：51
• 页码：27031-27038
• 全文大小：424K
• ISSN：1932-7455

文摘

Modifying surface-bound molecular switches by adding side groups is an established concept for restoration of functionality which a molecule possesses in solution and which is often quenched upon adsorption. Instead of decoupling the photochromic unit from the substrate, we follow a different approach, namely treating the complete molecule鈥搒ubstrate system. We use photoelectron spectroscopies to determine the energetic positions of the frontier orbitals of di-m-cyanoazobenzene on Bi(111) and to elucidate the isomerization mechanism which is stimulated by a substrate-mediated electron transfer process.