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Helix Inversion Controlled by Molecular Motors in Multistate Liquid Crystals
Advanced Materials ( IF 27.4 ) Pub Date : 2020-10-18 , DOI: 10.1002/adma.202004420 Alexander Ryabchun 1 , Federico Lancia 1 , Jiawen Chen 2 , Dmitry Morozov 3 , Ben L. Feringa 4 , Nathalie Katsonis 1
Advanced Materials ( IF 27.4 ) Pub Date : 2020-10-18 , DOI: 10.1002/adma.202004420 Alexander Ryabchun 1 , Federico Lancia 1 , Jiawen Chen 2 , Dmitry Morozov 3 , Ben L. Feringa 4 , Nathalie Katsonis 1
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Unravelling the rules of molecular motion is a contemporary challenge that promises to support the development of responsive materials and is likely to enhance the understanding of functional motion. Advances in integrating light‐driven molecular motors in soft matter have led to the design and realization of chiral nematic (cholesteric) liquid crystals that can respond to light with modification of their helical pitch, and also with helix inversion. Under illumination, these chiral liquid crystals convert from one helical geometry to another. Here, a series of light‐driven molecular motors that feature a rich configurational landscape is presented, specifically which involves three stable chiral states. The succession of chiral structures involved in the motor cycle is transmitted at higher structural levels, as the cholesteric liquid crystals that are formed can interconvert between helices of opposite handedness, reversibly. In these materials, the dynamic features of the motors are thus expressed at the near‐macroscopic, functional level, into addressable colors that can be used in advanced materials for tunable optics and photonics.
中文翻译：
多态液晶中分子电动机控制的螺旋反转
阐明分子运动的规则是当代的挑战，它有望支持响应性材料的发展，并有可能增进对功能运动的理解。将光驱动分子马达集成到软物质中的进展已导致设计和实现了手性向列（胆甾型）液晶，该液晶可以通过改变螺旋螺距和螺旋反转来响应光。在照明下，这些手性液晶从一种螺旋几何形状转换为另一种螺旋形状。在这里，提出了一系列具有丰富的构型景观的光驱动分子马达，特别是涉及三个稳定的手性态。摩托车中涉及的一系列手性结构以较高的结构水平传递，因为所形成的胆甾型液晶可以在可逆性螺旋之间相互转换。因此，在这些材料中，电动机的动态特性在近乎宏观的功能级别上被表达为可寻址的颜色，可用于可调谐光学和光子学的高级材料。
更新日期：2020-11-25
中文翻译：
多态液晶中分子电动机控制的螺旋反转
阐明分子运动的规则是当代的挑战，它有望支持响应性材料的发展，并有可能增进对功能运动的理解。将光驱动分子马达集成到软物质中的进展已导致设计和实现了手性向列（胆甾型）液晶，该液晶可以通过改变螺旋螺距和螺旋反转来响应光。在照明下，这些手性液晶从一种螺旋几何形状转换为另一种螺旋形状。在这里，提出了一系列具有丰富的构型景观的光驱动分子马达，特别是涉及三个稳定的手性态。摩托车中涉及的一系列手性结构以较高的结构水平传递，因为所形成的胆甾型液晶可以在可逆性螺旋之间相互转换。因此，在这些材料中，电动机的动态特性在近乎宏观的功能级别上被表达为可寻址的颜色，可用于可调谐光学和光子学的高级材料。
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