Hydrogen-bond engineering induced ferroelastic phase transition in copper-based organic-inorganic hybrid thermochromic materials

Xin Deng; Lin Zhou; Xin Yan; Yan-Juan Wang; Wen-Li Yang; Hui-Peng Lv; Yuan-Yuan Tang

doi:10.1039/d4cc04373a

Hydrogen-bond engineering induced ferroelastic phase transition in copper-based organic-inorganic hybrid thermochromic materials

Chem Commun (Camb). 2024 Dec 10;60(99):14766-14769. doi: 10.1039/d4cc04373a.

Authors

Xin Deng¹, Lin Zhou¹, Xin Yan¹, Yan-Juan Wang¹, Wen-Li Yang¹, Hui-Peng Lv¹, Yuan-Yuan Tang¹

Affiliation

¹ Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China. [email protected].

PMID: 39499216
DOI: 10.1039/d4cc04373a

Abstract

We report two organic-inorganic hybrid thermochromic crystals, [(2A5MP)₂CuCl₄] (2A5MP = 2-amino-5-methylpyridine) (1) and [(2A4MP)₂CuCl₄] (2A4MP = 2-amino-4-methylpyridine) (2). Through hydrogen bond engineering optimization, the ferroelastic material 2 undergoes an isomorphic phase transition with a large thermal hysteresis of 36 K at 397 K/361 K.