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Thermochromic Meltable Materials with Reverse Spin Transition Controlled by Chemical Design |
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| Authors: | Dr Francisco-Javier Valverde-Muñoz Dr Maksym Seredyuk Prof Dr M Carmen Muñoz Dr Gábor Molnár Yurii S Bibik Prof Dr José Antonio Real |
| Institution: | 1. Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, 46980 Paterna Valencia, Spain;2. Departamento de Física Aplicada, Universitat Politècnica de València, 46022 Valencia, Spain;3. LCC, CNRS &, Université de Toulouse (UPS, INP), 205 route de Narbonne, 31077 Toulouse, France;4. National Taras Shevchenko University, Department of Chemistry, Volodymyrska Str. 64, Kyiv, 01601 Ukraine |
| Abstract: | We report a series of meltable FeII complexes, which, depending on the length of aliphatic chains, display abrupt forward low-spin to high-spin transition or unprecedented melting-triggered reverse high-spin to low-spin transition on temperature rise. The reverse spin transition is perfectly reproducible on thermal cycling and the obtained materials are easily processable in the form of thin film owing to their soft-matter nature. We found that the discovered approach represents a potentially generalizable new avenue to control both the location in temperature and the direction of the spin transition in meltable compounds. |
| Keywords: | reverse spin transition soft matter spin crossover spin transitions |