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首页> 外文期刊>Crystal growth & design >Improved Dynamic Properties of Charge-Transfer-Type Supramolecular Rotor Composed of Coronene and F(4)TCNQ
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Improved Dynamic Properties of Charge-Transfer-Type Supramolecular Rotor Composed of Coronene and F(4)TCNQ

机译：冠冕烯和F（4）TCNQ组成的电荷转移型超分子转子的动态性能改进

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摘要

A charge-transfer (CT)-type supramolecular rotor, (coronene)(2)F(4)TCNQ was obtained by vacuum co-sublimation. The CT complex has an unprecedented crystal structure consisting only of DDA-type alternating pi-columns of coronene (D) and electron acceptor (A), and coronene molecules with a pronounced undulating structure form no C H center dot center dot center dot F hydrogen bonds with adjacent F(4)TCNQ molecules in the side-by-side direction. These structural features are in contrast with those reported for (coronene)F(4)TCNQ that has DA-type alternating pi-columns, which was obtained by diffusion in dichloromethane/pentane. Coronene molecules in the present complex undergo an in-plane rotation in the gigahertz region at 233 K, which is 3 orders of magnitude faster than that in (coronene)F(4)TCNQ Furthermore, the activation energy for the rotation was found to be about half of the value reported for (coronene)F(4)TCNQ These results clearly demonstrate that dynamic properties of the assemblies (CT complexes) can be varied by changing the assembly method (crystallization method), even when the parts (molecules) used as rotator and stator components are the same.
机译：通过真空共升华获得电荷转移（CT）型超分子转子（coronene）（2）F（4）TCNQ。 CT络合物具有空前的晶体结构，仅由DDA型交替的co烯（D）和电子受体（A）组成，并且具有明显起伏结构的co烯分子不形成CH中心点中心点中心点F氢键与相邻的F（4）TCNQ分子并排排列。这些结构特征与（coronene）F（4）TCNQ的那些形成对比，后者具有DA型交替的pi柱，该柱是通过在二氯甲烷/戊烷中扩散而获得的。本复合物中的冠冕分子在233 K的千兆赫区域内进行面内旋转，比（coronene）F（4）TCNQ中的快3个数量级。此外，发现旋转的活化能为（coronene）F（4）TCNQ的报告值的一半左右。这些结果清楚地表明，即使改变所使用的零件（分子），组件（CT配合物）的动力学性质也可以通过更改组装方法（结晶方法）来改变。因为转子和定子的组件是相同的。

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