My research interests are centered on determining structure–property relationships in functional materials using diffraction techniques coupled with physical property measurements to understand how material properties can be designed on the atomic scale. I work mainly with metal–organic frameworks and coordination polymers and use non-ambient diffraction experiments (variable temperature and high pressure) to follow the structural changes of the crystalline material and the consequence on its physical properties.
My present work focusses on developing structure–property relationships in iron-based spin crossover materials.
Packing rearrangement in 4-hydroxycyanobenzene under pressure, I.E. Collings, M. Hanfland, Molecules 24 (9), 1759, (2019).
Raman and single-crystal X-ray diffraction evidence of pressure-induced phase transitions in a perovskite-like framework of [(C3H7)4N][Mn(N(CN)2)3], M. Mączka, I.E. Collings, F.F. Leite, W. Paraguassu Dalton Trans. (2019).
High-pressure behaviour of Prussian blue analogues: interplay of hydration, Jahn-Teller distortions and vacancies, H.L.B. Boström, I.E. Collings, A.B. Cairns, C.P. Romao, A.L. Goodwin, Dalton Trans. 48 (5), 1647–1655, (2019).
Pressure dependence of spin canting in ammonium metal formate antiferromagnets, I.E. Collings, R.S. Manna, A.A. Tsirlin, M. Bykov, E. Bykova, M. Hanfland, P. Gegenwart, S. van Smaalen, L. Dubrovinsky, N. Dubrovinskaia, PhysChemChemPhys 20 (37), 24465–24476, (2018).
Disorder–order transitions in the perovskite metal–organic frameworks [(CH3)2NH2][M(HCOO)3] at high pressure, I.E. Collings, M. Bykov, E. Bykova, M. Hanfland, S. van Smaalen, L. Dubrovinsky, N. Dubrovinskaia, CrystEngComm 20 (25), 3512–3521, (2018).