Molecular Turnstiles Regulated by Metal Ions
Molecular Turnstiles Regulated by Metal Ions
复制标题
金属离子调控的分子十字转门
DOI：
10.1021/acs.joc.6b00463
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发表时间：
2016
影响因子：
3.6
通讯作者：
Jinag Hua
中科院分区：
文献类型：
--
作者：
Wang Guangxia;Xiao Hongmei;He Jiaojiao;Xiang Junfeng;Wang Ying;Chen Xuebo;Che Yanke;Jinag Hua
合成了一类新型的分子旋转门1 - 3，由两个带有吡啶基结合位点的定子和一个不同大小的三蝶烯转子组成。在室温下，在没有金属离子的情况下，分子旋转门表现在开放状态，但在Ag+和Pd 2+的存在下，显示出显着不同的闭合状态。Ag+介导的旋转门1 - 3Ag在室温下表现出闭合状态，但由于Ag+介导的大环骨架不能限制转子的旋转而无法读取双稳态;当温度降低时，大环骨架变得足够稳定以停止转子的旋转，最终导致1 -3Ag的可读闭合状态。相比之下，Pd 2+介导的大环框架是稳定的，从而引起可检测的封闭状态的旋转门1 - 3 Pin在很宽的温度范围内。这些发现也得到了DFT计算的支持。
A family of novel molecular turnstiles1–3composed of two stators with pyridyl binding sites and a different-sized triptycene rotor was synthesized. The molecular turnstiles behave in an open state at room temperature in the absence of metal ions but display significantly different closed states in the presence of Ag+and Pd2+. The Ag+-mediated turnstiles1–3Agexhibited closed states but unreadable bistability at ambient temperature because the Ag+-mediated macrocyclic framework is not able to restrict the rotations of the rotors; while temperature was decreased, the macrocyclic frameworks became stable enough to halt the rotations of the rotors, eventually leading to the readable closed states for1–3Ag. In contrast, Pd2+-mediated macrocyclic frameworks are stable, giving rise to a detectable closed state of turnstiles1–3Pdin a wide range of temperatures. These findings have also been supported by DFT calculations.