Light-Induced Contraction/Expansion of 1D Photoswitchable Metallopolymer Monitored at the Solid-Liquid Interface
| Accès libre Peer reviewed | |
|---|---|
| Version acceptée pour publication (post-print auteur) | |
| Paternité - Pas d'utilisation commerciale [CC] [BY] [NC] | |
| Auteurs |
Mohamed El Garah Etienne Borre Artur Ciesielski Arezoo Dianat Rafael Gutierrez Gianaurelio Cuniberti Stephane Bellemin-Laponnaz Matteo Mauro Paolo Samori |
| Unité de recherche du site |
Institut de Science et d'Ingénierie Supramoléculaires - ISIS - UMR7006 Institut de Physique et Chimie des Matériaux de Strasbourg - IPCMS - UMR7504 |
| Langue |
en |
| Volume |
13 |
| Numéro |
40 |
| Page de début |
1701790 |
| Date de première publication |
2017-08-25 |
| Date de parution |
2017-10-20 |
| ISSN |
16136810 |
| Titre de la source (revue, livre…) |
Small |
| Résumé |
The use of a bottom-up approach to the fabrication of nanopatterned functional surfaces, which are capable to respond to external stimuli, is of great current interest. Herein, the preparation of light-responsive, linear supramolecular Show moreThe use of a bottom-up approach to the fabrication of nanopatterned functional surfaces, which are capable to respond to external stimuli, is of great current interest. Herein, the preparation of light-responsive, linear supramolecular metallopolymers constituted by the ideally infinite repetition of a ditopic ligand bearing an azoaryl moiety and Co(II) coordination nodes is described. The supramolecular polymerization process is followed by optical spectroscopy in dimethylformamide solution. Noteworthy, a submolecularly resolved scanning tunneling microscopy (STM) study of the in situ reversible trans-to-cis photoisomerization of a photoswitchable metallopolymer that self-assembles into 2D crystalline patterns onto a highly oriented pyrolytic graphite surface is achieved for the first time. The STM analysis of the nanopatterned surfaces is corroborated by modeling the physisorbed species onto a graphene slab before and after irradiation by means of density functional theory calculation. Significantly, switching of the monolayers consisting of supramolecular Co(II) metallopolymer bearing trans-azoaryl units to a novel pattern based on cis isomers can be triggered by UV light and reversed back to the trans conformer by using visible light, thereby restoring the trans-based supramolecular 2D packing. These findings represent a step forward toward the design and preparation of photoresponsive “smart” surfaces organized with an atomic precision. Show less |
| DOI | 10.1002/smll.201701790 |
| Éditeur |
Wiley-VCH Verlag |
| URL éditeur |
http://onlinelibrary.wiley.com.scd-rproxy.u-strasbg.fr/doi/10.1002/smll.201701790/full |
| Titre abrégé de la source |
Small |
| Type de publication |
ACL |
| Projet(s) de recherche ANR |
Labex projects CSC (ANR-10-LABX-0026 CSC) |
| Projet(s) de recherche européen(s) |
EC/H2020/642196///iSwitch |
| Topic |
Chimie/Matériaux |
| Mots-clés |
density functional theory (DFT) |
| Unité de recherche extérieure au site |
Institute for Materials Science and Max Bergmann Center of Biomaterials; Dresden University of Technology; 01062 Dresden Germany |
| Équipes de recherche |
E4 - DMO : Département des matériaux organiques |
| Fonction |
aut |
| Identifiant ORCID |
orcid.org/0000-0001-6256-8281 |
| Identifiant idREF |
183756681 151349363 109288335 |
| Audience |
International |
| URL | https://univoak.eu/islandora/object/islandora:64311 |