多元化(营销策略)
材料科学
化学
化学工程
纳米技术
有机化学
业务
工程类
营销
作者
Shuting Dai,Jiangbin Zhong,Xiqiao Yang,Chao Chen,Liping Zhou,Xianjie Liu,Jingbo Sun,Kaiqi Ye,Hongyu Zhang,Lipeng Zhang,Panče Naumov,Ran Lu
标识
DOI:10.1002/ange.202320223
摘要
Structurally ordered soft materials that respond to complementary stimuli are susceptible to control over their spatial and temporal morphostructural configurations via intersectional or combined effects such as gating, feedback, shape‐memory, or programming. In absence of general and robust design and prediction strategies for their mechanical properties, at present, combined chemical and crystal engineering approaches could provide useful guidelines to identify effectors that determine both the magnitude and time of their response. Here, we capitalize on the purported ability of soft intermolecular interactions to instigate mechanical compliance by using halogenation to elicit both mechanical and photochemical activity of organic crystals. Starting from (E)‐1,4‐diphenylbut‐2‐ene‐1,4‐dione, whose crystals are brittle and photoinert, we use double and quadruple halogenation to introduce halogen‐bonded planes that become interfaces for molecular gliding, rendering the material mechanically and photochemically plastic. Fluorination diversifies the mechanical effects further, and crystals of the tetrafluoro derivative are also elastic but also motile, displaying the rare photosalient effect.
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