Shape Rememorization of an Organosuperelastic Crystal through Superelasticity–Ferroelasticity Interconversion

As altering permanent shapes without loss of material function is of practical importance for material molding, especially for elastic materials, shape‐rememorization ability would enhance the utility of elastic crystalline materials. Since diffusionless plastic deformability can preserve the crysta...

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Bibliographic Details
Published in:Angewandte Chemie 2019-09, Vol.131 (39), p.13860-13864
Main Authors: Sakamoto, Shunichi, Sasaki, Toshiyuki, Sato‐Tomita, Ayana, Takamizawa, Satoshi
Format: Article
Language:English
Subjects:
Chemistry
Crystal structure
Crystallinity
Crystals
Deformability
Elastic deformation
Ferroelasticity
Festkörperstrukturen
Formability
Formerinnerung
Kristalltechnik
Organoferroelastizität
Organosuperelastizität
Single crystals
Superelasticity
Workability
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Summary:As altering permanent shapes without loss of material function is of practical importance for material molding, especially for elastic materials, shape‐rememorization ability would enhance the utility of elastic crystalline materials. Since diffusionless plastic deformability can preserve the crystallinity of materials, the interconversion of diffusionless mechanical deformability between superelasticity and ferroelasticity could enable shape rememorization of superelastic single crystals. This study demonstrates the shape rememorization of an organosuperelastic single crystal of 1,4‐dicyanobenzene through time‐reversible interconversion of superelasticity–ferroelasticity relaxation by holding the mechanically twinned crystal without heating. The shape‐rememorization ability of the organosuperelastic crystal indicates the compatibility of superelasticity (antiferroelasticity) and ferroelasticity as well as the intrinsic workability of organic crystalline materials capable of recovering their crystal functions under mild conditions. In der jüngsten Erinnerung… Ein mechanisch verzwillingter 1,4‐Dicyanobenzol‐Kristall behielt durch Superelastizität(SE)/Ferroelastizität(FE)‐Interkonversion seine ursprüngliche Form in Erinnerung, wenn er gebogen und ohne Erwärmung in neuer Form gehalten wurde. Dies zeigt die intrinsische Verarbeitbarkeit von organischen kristallinen Materialien, die ihre Kristallfunktionen unter milden Bedingungen wiederherstellen können.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201905769