title: Light-Controlled Interconversion between a Self-Assembled Triangle and a Rhombicuboctahedral Sphere.
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.
authors.affiliation: Institut für Anorganische Chemie, Georg-August Universität Göttingen, Tammannstrasse 4, 37077, Göttingen (Germany).
authors.forename: Muxin
authors.initials: M
authors.lastname: Han
authors.affiliation: I. Physikalisches Institut, Georg-August Universität Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen (Germany).
authors.forename: Yuansu
authors.initials: Y
authors.lastname: Luo
authors.affiliation: I. Physikalisches Institut, Georg-August Universität Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen (Germany).
authors.forename: Bernd
authors.initials: B
authors.lastname: Damaschke
authors.affiliation: Grup de Química Bioinorgànica i Supramolecular, Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, E17071 Girona, Catalonia (Spain).|Serveis Tècnics de Recerca (STR), Universitat de Girona, Parc Científic i Tecnològic de la UdG, Pic de Peguera 15, E17003 Girona, Catalonia (Spain).
authors.forename: Laura
authors.initials: L
authors.lastname: Gómez
authors.affiliation: Grup de Química Bioinorgànica i Supramolecular, Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, E17071 Girona, Catalonia (Spain).
authors.forename: Xavi
authors.initials: X
authors.lastname: Ribas
authors.affiliation: Department of Chemical Sciences, IISER-Kolkata, 741246, West Bengal (India).
authors.forename: Anex
authors.initials: A
authors.lastname: Jose
authors.affiliation: IV. Physikalisches Institut, Georg-August Universität Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen (Germany).
authors.forename: Patrick
authors.initials: P
authors.lastname: Peretzki
authors.affiliation: IV. Physikalisches Institut, Georg-August Universität Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen (Germany).
authors.forename: Michael
authors.initials: M
authors.lastname: Seibt
authors.affiliation: Institut für Anorganische Chemie, Georg-August Universität Göttingen, Tammannstrasse 4, 37077, Göttingen (Germany). guido.clever@tu-dortmund.de.|Fakultät für Chemie und Chemische Biologie, TU Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund (Germany). guido.clever@tu-dortmund.de.
authors.forename: Guido H
authors.initials: GH
authors.lastname: Clever
keywords: cage compounds; nanoparticles; photoswitches; structural conversion; supramolecular chemistry