Light-Driven Rotary Molecular Motors on Gold Nanoparticles
作者:Michael M. Pollard、Matthijs K. J. ter Wiel、Richard A. van Delden、Javier Vicario、Nagatoshi Koumura、Coenraad R. van den Brom、Auke Meetsma、Ben L. Feringa
DOI:10.1002/chem.200800814
日期:——
We report the synthesis of unidirectional light-drivenrotarymolecularmotors based on chiral overcrowded alkenes and their immobilisation on the surface of gold nanoparticles through two anchors. Using a combination of (1)H and (13)C NMR, UV/Vis and CD spectroscopy, we show that these motors preserve their photochemical and thermal behaviour after they have been attached to gold nanoparticles. Furthermore
Fast synthesis and redox switching of di- and tetra-substituted bisthioxanthylidene overcrowded alkenes
作者:Brian P. Corbet、Marco B. S. Wonink、Ben L. Feringa
DOI:10.1039/d1cc03098a
日期:——
A rapid and efficient method for the synthesis of overcrowded alkenes using (trimethylsilyl)diazomethane provides a range of substituted bisthioxanthylidenes. We show large conformational redox switching from folded to orthogonal states, which tolerates many substitution patterns. The facile access to bisthioxanthylidene switches with the potential for further functionalization, in combination with
Cation-Modulated Rotary Speed in a Light-Driven Crown Ether Functionalized Molecular Motor
作者:Ruth Dorel、Carla Miró、Yuchen Wei、Sander J. Wezenberg、Ben L. Feringa
DOI:10.1021/acs.orglett.8b00969
日期:2018.7.6
The design and synthesis of an overcrowded-alkene based molecular motor featuring a crownether integrated in its stator structure has been accomplished. The photostationary state ratios and rotational speed of this motor can be modulated by cation coordination to the crownether moiety, which can be reversed upon the addition of a competing chelating agent, thus achieving a dynamic control over the
Gram scale synthesis of functionalized and optically pure Feringa's motors
作者:Quan Li、Justin T. Foy、Jean-Rémy Colard-Itté、Antoine Goujon、Damien Dattler、Gad Fuks、Emilie Moulin、Nicolas Giuseppone
DOI:10.1016/j.tet.2017.05.023
日期:2017.8
In this paper we describe a diastereoselective synthesis of highly functionalized and optically pure Feringa's molecular motors. Two types of chemical functions are introduced on the upper and lower parts of the motor, and their orthogonality is investigated. The synthesis is performed on a gram scale and the diastereoisomers are easily separated by a straightforward column chromatography on silica