Triple-chromic (photo-, thermo-, and mechano-chromic) metal complexes containing N-salicylideneaminopyridine ligands†

IF 3.3 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Dalton Transactions Pub Date : 2025-02-07 DOI:10.1039/D4DT01755B

Haruki Sugiyama, Atsuko Arita, Akiko Sekine and Hidehiro Uekusa

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Abstract

N-Salicylideneaminopyridine (SAP) is a well-known organic chromic compound that shows a reversible colour change upon UV light irradiation (photochromism) and upon cooling (thermochromism). Herein, we report novel multi-chromic metal complexes containing SAP derivatives as ligands, viz. [Ni(NCS)₂(3,5-t-Bu-SAP)₄] (Ni1) and [Co(NCS)₂(3,5-t-Bu-SAP)₄] (Co1). The Ni1 crystals exhibited both photo- and thermochromism with new colour variations, which were due to the light absorption of the Ni(II) ions and chromic properties of the SAP ligands. The Co1 crystal also exhibited photo- and thermochromism originating from the SAP ligands. Furthermore, the Co1 crystal exhibited mechanochromism induced by grinding with a mortar, which was considered to be attributable to the change of the Co1 coordination structure. Such a triple-chromic material is rare and very fascinating for the applications of multiple sensors, memory devices, and functional inks.

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含n -水杨基氨基吡啶配体的三色（光色、热色和机械色）金属配合物

n -水杨柳二胺吡啶（SAP）是一种众所周知的有机铬化合物，在紫外线照射（光致变色）和冷却（热致变色）时表现出可逆的颜色变化。本文报道了以SAP衍生物为配体的新型多色金属配合物，即[Ni(NCS)2(3,5-t- bu -SAP)4] （Ni1）和[Co(NCS)2(3,5-t- bu -SAP)4] （Co1）。由于Ni（II）离子的光吸收和SAP配体的变色特性，Ni1晶体表现出光致变色和热致变色的新颜色变化。Co1晶体也表现出源于SAP配体的光致变色和热致变色。此外，Co1晶体在砂浆研磨过程中表现出机械变色，这可能是由于Co1配位几何变形所致。这种三色材料非常罕见，对多种传感器、存储设备和功能油墨的应用非常有吸引力。

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来源期刊

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.