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首页> 外文期刊>Chemistry: A European journal >Conjecture: Imines as unidirectional photodriven molecular motors-motional and constitutional dynamic devices
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Conjecture: Imines as unidirectional photodriven molecular motors-motional and constitutional dynamic devices

机译：猜想：作为单向光驱分子电动机的亚胺-运动和体质动力学装置

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摘要

Compounds containing the C=N group, such as imines and their derivatives, may undergo syn-anti. isomerization by two different routes: 1) photochemically, by out-of-plane rotation around the carbon-nitrogen double bond through a "perpendicular" form, and 2) thermally, by in-plane nitrogen inversion through a "linear" transition state. When the two interconversions occur in sequence, a full, closed process is accomplished, restoring the initial state of the system along two different steps. In a chiral imine-type compound, for example, with an asymmetric center next to the C=N function, photoinduced rotation may be expected to occur in one sense in preference to the opposite one. Thus, photoisomerization followed by thermal isomerization in a chiral imine compound generates unidirectional molecular motion. Generally, imine-type compounds represent unidirectional molecular photomotors converting light energy into mechanical motion. As they are also able to undergo exchange of the carbonyl and amine partners, they present constitutional dynamics. Thus, imine-type compounds are double dynamic, motional, and constitutional devices.
机译：包含C = N基团的化合物，例如亚胺及其衍生物，可以经历顺-抗。通过两种不同的途径进行异构化：1）通过化学方式，通过“垂直”形式围绕碳-氮双键进行面外旋转，以及2）通过通过“线性”过渡态进行面内氮转化而进行热转化。当两个相互转换顺序发生时，将完成一个完整的封闭过程，并沿着两个不同的步骤恢复系统的初始状态。例如，在手性亚胺型化合物中，不对称中心紧靠C = N函数，可以预期在某种意义上优先于相反方向发生光诱导旋转。因此，手性亚胺化合物中的光异构化继之以热异构化产生单向分子运动。通常，亚胺类化合物代表将光能转换为机械运动的单向分子光电马达。由于它们还能够进行羰基和胺配偶的交换，因此具有结构动力学。因此，亚胺型化合物是双重动力学的，运动的和构成的装置。

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