Institut de Science et d'Ingénierie Supramoléculaires (UMR 7006), CNRS and Université de Strasbourg, 8 Allée Gaspard Monge, 67000 Strasbourg (France).
Institut für Nanotechnologie (INT), Karlsruhe Institut für Technologie (KIT), 76344 Eggenstein-Leopoldshafen (Germany).
Angew Chem Int Ed Engl. 2015 Nov 23;54(48):14570-4. doi: 10.1002/anie.201506474. Epub 2015 Oct 14.
A contractile dendritic motional device is reported where metal ions with biological importance--Ca(2+) (the main regulatory and signaling species of the natural muscles), Mg(2+), and Zn(2+)--initiate two kinds of motional functions. The first motional function is the metal-ion-induced contraction of a linear strand into a Z-shaped dinuclear complex, and the second one is the change of the height of Z-shaped complexes via transmetalation. By means of the pH-dependent counterligand tren, the two motional features of the machine can depend on alternate additions of acid and base. An optical response is associated with the conversion of the linear form (which is yellow) into the metalated Z-shaped one (which is red).
报道了一种可收缩的树枝状运动器件，其中具有生物学重要性的金属离子——Ca(2+)（天然肌肉的主要调节和信号物质）、Mg(2+)和 Zn(2+)——引发了两种运动功能。第一种运动功能是线性链在金属离子的诱导下收缩成双核 Z 形配合物，第二种运动功能是通过转金属化改变 Z 形配合物的高度。通过 pH 值依赖的抗衡配体 tren，该机器的两种运动特性可以通过交替添加酸和碱来实现。光学响应与线性形式（黄色）转化为金属化 Z 形形式（红色）的转化相关。
