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Light-Controlled Interconversion between a Self-Assembled Triangle and a Rhombicuboctahedral Sphere

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

El mateix article està publicat en alemany a l’edició alemanya d’ ’Angewandte Chemie’ (ISSN 0044-8249, EISSN 1521-3757), 2016, vol. 128, núm. 1, p.456-460. DOI http://dx.doi.org/10.1002/ange.201508307

X.R. acknowledges financial support from INNPLANTA project INP-2011-0059-PCT- 420000-ACT1 and ICREA-AcadÀmia Award

© Angewandte Chemie International Edition, 2016, vol. 55, núm. 1, p. 445-449

http://hdl.handle.net/10256/12254

Wiley-VCH Verlag

Author: Han, Muxin
Luo, Yuansu
Damaschke, Bernd
Gómez Martín, Laura
Ribas Salamaña, Xavi
Anex, Jose
Peretzki, Patrick
Seibt, Michael
Clever, Guido H.
Date: 2016
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
El mateix article està publicat en alemany a l’edició alemanya d’ ’Angewandte Chemie’ (ISSN 0044-8249, EISSN 1521-3757), 2016, vol. 128, núm. 1, p.456-460. DOI http://dx.doi.org/10.1002/ange.201508307
X.R. acknowledges financial support from INNPLANTA project INP-2011-0059-PCT- 420000-ACT1 and ICREA-AcadÀmia Award
Format: application/pdf
ISSN: 1433-7851 (versió paper)
1521-3773 (versió electrònica)
Document access: http://hdl.handle.net/10256/12128
Language: eng
Publisher: Wiley-VCH Verlag
Collection: MICINN/PN 2011/INP-2011-0059-PCT-420000
Reproducció digital del document publicat a: http://dx.doi.org/10.1002/anie.201508307
Articles publicats (D-Q)
Is part of: © Angewandte Chemie International Edition, 2016, vol. 55, núm. 1, p. 445-449
See also: http://hdl.handle.net/10256/12254
Rights: Tots els drets reservats
Subject: Nanopartícules
Nanoparticles
Química supramolecular
Supramolecular chemistry
Title: Light-Controlled Interconversion between a Self-Assembled Triangle and a Rhombicuboctahedral Sphere
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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