Goldsmiths' Professor of Materials Science
BA University of Oxford
DPhil University of Oxford
Functional Inorganic and Hybrid Materials
We work in the general area of materials chemistry. Our expertise lies in the synthesis of novel phases, their chemical and structural characterization, and the study of their properties.
Hybrid framework materials
A large part of our effort is devoted to exploring the emerging field of hybrid inorganic-organic framework materials, which are crystalline phases containing both inorganic and organic structural elements. Since these can exhibit the functionality of both inorganic and organic materials, they have a diverse range of properties and show potential for applications in many areas. One of the unique aspects of hybrid frameworks is the facility with which homochiral materials can be created by using single-enantiomer organic ligands.
Metal-organic framework materials
A large part of our effort is devoted to exploring the exciting field of metal-organic framework materials, which are crystalline phases containing both inorganic and organic structural elements (MOFs). Since these can exhibit the functionality of both inorganic and organic materials, they have a diverse range of properties and show potential for applications in many areas. Much of our work focuses on dense MOFs, where we are studying phase transitions, conductivity and ferroelectric props.
The second main theme of our research concerns new light-conversion materials for applications in solid-state lighting, displays, photovoltaic devices and photocatalysis. One of the challenges for lighting is to develop down-conversion phosphors that will harvest the blue or near-UV light from LEDs and convert it efficiently into the other colours that are required for high-quality white light. We are developing a range of inorganic phosphors to achieve this.
Materials chemistry of metal oxides
The group has a long-standing tradition of research on transition-metal oxides. The focus of our current work is on the ternary oxides of nepturium and uranium, and on complex rare-earth oxides for optical applications.
|[(CH3)2NH2]Cu(HCOO)3 with perovskite topology|
- S. Tominaka, T. Suga, T. D. Bennett, and A. K. Cheetham, "Topochemical conversion of a dense metal-organic framework from a crystalline insulator to an amorphous semiconductor",Chemical Science 6, 1465-1473 (2015)
- E. C. Spencer, M. S. R. N. Kiran, Wei Li, U. Ramamurty, N. L. Ross and A. K. Cheetham, "Pressure-induced bond rearrangement and reversible phase transformation in a metal-organic framework",Angew. Chem. Intl. Ed. Eng. 53, 5583-5586 (2014)
- A.L. Smith, P.E. Raison, L. Martel, T. Charpentier, I. Farnan, D. Prieur, C. Hennig, A. Scheinost, R .J. M. Konings, and A. K. Cheetham, "A 23Na magic angle spinning nuclear magnetic resonance, XANES, and high temperature X-ray diffraction study of NaUO3, Na4UO5, and Na2U2O7", Inorg. Chem. 53, 375-382 (2014)
- S. Kaveh, C. Tremblay, N. Norhashim, R. J. Curry and A. K. Cheetham, "Phase separation in garnet solid solutions and its effect on optical properties",Advanced Materials 25, 6448-6452 (2013)