Supramolecular click procedures in liquid crystals
Supramolecular click procedures in liquid crystals
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DOI：
10.1080/02678292.2019.1618936
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发表时间：
2019-05-31
期刊：
影响因子：
2.2
通讯作者：
Baumann, Maximilian
中科院分区：
文献类型：
--
作者：
Lehmann, Matthias;Dechant, Moritz;Baumann, Maximilian
点击反应被认为是高度可靠的化学过程，即使是复杂的分子构建块也可以通过共价键不可逆地连接起来。虽然由氢键或金属络合等特定相互作用控制的超分子聚集等可逆过程在自然界中也是高度可靠和普遍存在的，但它们很少被认为是点击反应。在日常生活中，与点击过程相关的机械过程只依赖于形状识别和空间填充，如扣扣、扣扣和球扣，它们在纳米世界中几乎是未知的。本文在分子基础上定义了这些过程，并重点介绍了一些最近的星形、形状持久的介原的例子，这些介原被设计用来控制柱状液晶的纳米结构，以用于未来的光伏应用。将导致这些结构的点击过程与CPI和LC毽子等相关系统进行比较。
Click reactions have been introduced as highly reliable chemical processes, in which even complex molecular building blocks can be connected irreversibly by covalent bonds. Although reversible processes like supramolecular aggregation controlled by specific interactions like hydrogen bonding or metal complexation are also highly reliable and omnipresent in nature, they are rarely considered as click reactions. Mechanical processes in daily life associated with a click procedure depending only on shape recognition and space-filling are snap fasteners, snap fit buckels and ball detents and they are almost unknown in the nanoworld. This account defines such processes on a molecular basis and highlights some recent examples of star-shaped, shape-persistent mesogens designed to control the nanostructure of columnar liquid crystals for future photovoltaic applications. The click procedure leading to these structures is compared to related systems like the CPI and the LC shuttlecock.[GRAPHICS].