Organic Ferroelastic with Dual‐Channel Manipulation Obtained by H/F Substitution

Author:

Xu Yu‐Qiu1,Lan Jin‐Fei1,Mao Wei‐Xin1,Zhou Long‐Xing1,Deng Xin1,Chen Xiao‐Gang1,Zhang Han‐Yue2

Affiliation:

1. Department of Ordered Matter Science Research Center Nanchang University Nanchang 330031 People's Republic of China

2. Department of Jiangsu Key Laboratory for Biomaterials and Devices State Key Laboratory of Digital Medical Engineering School of Biological Science and, Medical Engineering Southeast University Nanjing 211189 People's Republic of China

Abstract

AbstractFerroelastic materials with high phase transition temperature have broad application prospects in information conversion and storage, shape memory, energy conversion, hyperelasticity, etc. However, most of the current reports focus on inorganic ferroelastic materials. Inorganic ferroelastic materials have the disadvantages of high energy consumption and harmful metals, which limit their application in practical work. In contrast, organic ferroelastic materials have the advantages of structural adjustability, environmental protection, easy processing, low cost, mechanical flexibility, and so on, which have great development potential in new ferroelastic materials. Here, we have successfully designed and synthesized a pair of homochiral enantiomers [(R/S)‐4‐fluorobenzoic acid‐2‐amino‐2‐phenylethanol] (R‐ and S‐F) using the chemical design strategy of H/F substitution. Compared with the non‐F substitution [(R/S)‐benzoic acid‐2‐amino‐2‐phenylethanol] (R‐ and S‐H), they undergo 2F1‐type ferroelastic phase transitions at 370 K. Notably, the ferroelastic domains of R/S‐F can be controlled through two physical channels that are temperature and stress, showing great potential in dual‐channel switches.

Funder

National Natural Science Foundation of China

Government of Jiangsu Province

Publisher

Wiley

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