Guest-Responsive Elastic Frustration "On-Off" Switching in Flexible, Two-Dimensional Spin Crossover Frameworks
Natasha F Sciortino, Florence Ragon, Y Maximilian Klein, Catherine E Housecroft, Casey G Davies, Guy NL Jameson, Guillaume Chastanet, Suzanne M Neville
INORGANIC CHEMISTRY | AMER CHEMICAL SOC | Published : 2018
In this study we exploit the flexible nature of porous coordination polymers (PCPs) with integrated spin crossover (SCO) properties to manipulate the multistability of spin-state switching profiles. We previously reported the two-dimensional Hofmann-type framework [Fe(thtrz)2Pd(CN)4]·EtOH,H2O (1·EtOH,H2O), N-thiophenylidene-4 H-1,2,4-triazol-4-amine), displaying a distinctive two-step SCO profile driven by extreme elastic frustration. Here, we reveal a reversible release mechanism for this elastic frustration via stepwise guest removal from the parent phase (1·EtOH,H2O → 1·H2O → 1·Ø). Parallel variable temperature structural and magnetic susceptibility measurements reveal a synergistic frame..View full abstract
Awarded by U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences
The Australian Research Council is thanked for providing Discovery Grants and Research Fellowships to support this work at the University of Sydney and The University of New South Wales. The University of Otago, the MacDiarmid Institute, and The University of Melbourne are thanked for financial support. The University of Bordeaux, the CNRS, the Aquitaine Region are thanked for providing support. Access and use of the facilities of the APS were supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences (Contract DE-AC02-06CH11357). Travel to the APS was funded by the International Synchrotron Access Program (ISAP) managed by the Australian Synchrotron and funded by the Australian Government. The University of Basel is acknowledged for support. We thank Dr. Gregory J. Halder, Prof. Cameron J. Kepert, and Katrina A. Zenere for discussions and assistance.