STM Observation of Open- and Closed-Ring Forms of Functionalized Diarylethene Molecules Self-Assembled on a Au(111) Surface

Abstract : STM Observation of Open- and Closed-Ring Forms of Functionalized Diarylethene Molecules Self-Assembled on a Au(111) Surface Abstract HTMLFull Text HTML PDFHi-Res PDF[3988 KB] PDFPDF w/ Links[782 KB] Supporting Info Figures Your current credentials do not allow retrieval of the full text. Purchase the full-text Cart PDF/HTML, figures/images, references and tables, (where available) PDF Sergii V. Snegir†‡||, Alexandr A. Marchenko§, Pei Yu, Francois Maurel#, Oleksiy L. Kapitanchuk, Sandra Mazerat, Marc Lepeltier, Anne Léaustic, and Emmanuelle Lacaze*†|| Institut des NanoSciences de Paris (INSP), CNRS, 4 place Jussieu, 75251 Paris, France Institut des NanoSciences de Paris (INSP), UPMC Université Paris 6, 4 place Jussieu, 75251 Paris, France ‡Chuiko Institute of Surface Chemistry, §Institute of Physics, and Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv, Ukraine Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182, Université Paris Sud 11, 91405 Orsay, France Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086, 15 rue J-A de Baïf, 75205 Paris Cedex 13, France J. Phys. Chem. Lett., 2011, 2 (19), pp 2433-2436 DOI: 10.1021/jz200875c Publication Date (Web): August 24, 2011 Copyright © 2011 American Chemical Society E-mail: Emmanuelle.lacaze@insp.jussieu.fr. CASSection: Surface Chemistry and Colloids Abstract Abstract Image Ordered self-assembled monolayers (SAMs) of thiolated diarylethene photochromic molecules have been built on a Au(111) surface and characterized by mean of scanning tunneling microscopy (STM) for the first time. It has been revealed that molecules deposited from UV-illuminated (closed-ring isomer) and initial solutions (open-ring isomer) both occupy 4 × 2√3 adsorption sites on Au(111) and present a conformation where conjugated parts are parallel to the surface, forming "umbrella-like" structure. On the basis of the distances measured from STM images with intramolecular resolution and on quantum chemical DFT calculations of electronic structure for single molecules, an identical model of molecular packing with a 4 × 4√3 unit cell is proposed for both isomers. The variation of internal orbitals between open- and closed-ring isomers leads to significant change of STM contrast, allowing direct identification of each diarylethene isomer using STM images.
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Contributor : Emmanuelle Lacaze <>
Submitted on : Tuesday, December 6, 2011 - 5:17:29 PM
Last modification on : Thursday, September 26, 2019 - 10:58:03 AM

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Sergii Snegir, Alexandr A. Marchenko, Yu Pei, François Maurel, Oleksiy L. Kapitanchuk, et al.. STM Observation of Open- and Closed-Ring Forms of Functionalized Diarylethene Molecules Self-Assembled on a Au(111) Surface. Journal of Physical Chemistry Letters, American Chemical Society, 2011, 2 (19), pp.2433-2436. ⟨10.1021/jz200875c⟩. ⟨hal-00648991⟩

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