Light‐Controlled Interconversion between a Self‐Assembled Triangle and a Rhombicuboctahedral Sphere |
| |
Authors: | Muxin Han Dr Yuansu Luo Dr Bernd Damaschke Dr Laura Gómez Dr Xavi Ribas Anex Jose Patrick Peretzki Prof Dr Michael Seibt Prof Dr Guido H Clever |
| |
Institution: | 1. Institut für Anorganische Chemie, Georg‐August Universit?t G?ttingen, Tammannstrasse 4, 37077, G?ttingen (Germany);2. I. Physikalisches Institut, Georg‐August Universit?t G?ttingen, Friedrich‐Hund‐Platz 1, 37077, G?ttingen (Germany);3. Grup de Química Bioinorgànica i Supramolecular, Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, E17071 Girona, Catalonia (Spain);4. Serveis Tècnics de Recerca (STR), Universitat de Girona, Parc Científic i Tecnològic de la UdG, Pic de Peguera 15, E17003 Girona, Catalonia (Spain);5. Department of Chemical Sciences, IISER‐Kolkata, 741246, West Bengal (India);6. IV. Physikalisches Institut, Georg‐August Universit?t G?ttingen, Friedrich‐Hund‐Platz 1, 37077, G?ttingen (Germany);7. Fakult?t für Chemie und Chemische Biologie, TU Dortmund, Otto‐Hahn‐Strasse 6, 44227 Dortmund (Germany) |
| |
Abstract: | Stimuli‐responsive structural reorganizations play an important role in biological processes, often in combination with kinetic control scenarios. In supramolecular mimics of such systems, light has been established as the perfect external trigger. Here, we report on the light‐driven structural rearrangement of a small, self‐assembled Pd3L6 ring based on photochromic dithienylethene (DTE) ligands into a rhombicuboctahedral Pd24L48 sphere measuring about 6.4 nm across. When the wavelength is changed, this interconversion can be fully reversed, as confirmed by NMR and UV/Vis spectroscopy as well as mass spectrometry. The sphere was visualized by AFM, TEM, and GISAXS measurements. Due to dissimilarities in the photoswitch conformations, the interconversion rates between the two assemblies are drastically different in the two directions. |
| |
Keywords: | cage compounds nanoparticles photoswitches structural conversion supramolecular chemistry |
|
|