Enforcing Multifunctionality: A Pressure-Induced Spin-Crossover Photomagnet

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• 作者：Dawid Pinkowicz ; Micha艂 Rams ; Martin Mi拧ek ; Konstantin V. Kamenev ; Hanna Tomkowiak ; Andrzej Katrusiak ; Barbara Sieklucka
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：July 15, 2015
• 年：2015
• 卷：137
• 期：27
• 页码：8795-8802
• 全文大小：502K
• ISSN：1520-5126

文摘

Photomagnetic compounds are usually achieved by assembling preorganized individual molecules into rationally designed molecular architectures via the bottom-up approach. Here we show that a magnetic response to light can also be enforced in a nonphotomagnetic compound by applying mechanical stress. The nonphotomagnetic cyano-bridged Fe^II鈥揘b^IV coordination polymer {[Fe^II(pyrazole)₄]₂[Nb^IV(CN)₈]路4H₂O}_n (FeNb) has been subjected to high-pressure structural, magnetic and photomagnetic studies at low temperature, which revealed a wide spectrum of pressure-related functionalities including the light-induced magnetization. The multifunctionality of FeNb is compared with a simple structural and magnetic pressure response of its analog {[Mn^II(pyrazole)₄]₂[Nb^IV(CN)₈]路4H₂O}_n (MnNb). The FeNb coordination polymer is the first pressure-induced spin-crossover photomagnet.