Professor John Evans' Outputs (5)

Average and Local Structure of Apatite-Type Germanates and Implications for Oxide Ion Conductivity (2019)
Journal Article
Chambers, M. S., Chater, P. A., Evans, I. R., & Evans, J. S. (2019). Average and Local Structure of Apatite-Type Germanates and Implications for Oxide Ion Conductivity. Inorganic Chemistry, 58(21), 14853-14862. https://doi.org/10.1021/acs.inorgchem.9b02544

Materials with the apatite structure have a range of important applications in which their function is influenced by details of their local structure. Here, we describe an average and local structural study to probe the origins of high-temperature ox... Read More about Average and Local Structure of Apatite-Type Germanates and Implications for Oxide Ion Conductivity.

Local structure and orientational ordering in liquid bromoform (2019)
Journal Article
Shephard, J. J., Evans, J. S., & Salzmann, C. G. (2019). Local structure and orientational ordering in liquid bromoform. Molecular Physics, 117(22), 3337-3344. https://doi.org/10.1080/00268976.2019.1648897

The neutron diffraction data of liquid bromoform (CHBr3) at 25°C was analysed using the Empirical Potential Structure Refinement technique in combination with H/D isotopic substitution. Compared to liquid chloroform (CHCl3), CHBr3 displays more spati... Read More about Local structure and orientational ordering in liquid bromoform.

Shape-Persistent Porous Organic Cage Supported Palladium Nanoparticles as Heterogeneous Catalytic Materials (2019)
Journal Article
Jiang, S., Cox, H., Papaioannou, E., Tang, C., Liu, H., Murdoch, B. J., Gibson, E. K., Metcalfe, I., Evans, J. S., & Beaumont, S. K. (2019). Shape-Persistent Porous Organic Cage Supported Palladium Nanoparticles as Heterogeneous Catalytic Materials. Nanoscale, 11(31), 14929-14936. https://doi.org/10.1039/c9nr04553h

Porous Organic Cages (POCs) are an emerging class of self-assembling, porous materials with novel properties. They offer a key advantage over other porous materials in permitting facile solution processing and re-assembly. The combination of POCs wit... Read More about Shape-Persistent Porous Organic Cage Supported Palladium Nanoparticles as Heterogeneous Catalytic Materials.

Super-colossal uniaxial negative thermal expansion in chloranilic acid pyrazine, CA-Pyz (2019)
Journal Article
Liu, H., Gutmann, M. J., Stokes, H. T., Campbell, B. J., Evans, I. R., & Evans, J. S. (2019). Super-colossal uniaxial negative thermal expansion in chloranilic acid pyrazine, CA-Pyz. Chemistry of Materials, 31(12), 4514-4523. https://doi.org/10.1021/acs.chemmater.9b01135

There has been significant recent interest in exploiting the large dimension changes that can occur in molecular materials as a function of temperature, stress or under optical illumination. Here we report the remarkable thermal expansion properties... Read More about Super-colossal uniaxial negative thermal expansion in chloranilic acid pyrazine, CA-Pyz.

Overcoming chemical equilibrium limitations using a thermodynamically reversible chemical reactor (2019)
Journal Article
Metcalfe, I. S., Ray, B., Dejoie, C., Hu, W., de Leeuwe, C., Dueso, C., García-García, F. R., Mak, C.-M., Papaioannou, E. I., Thompson, C. R., & Evans, J. S. (2019). Overcoming chemical equilibrium limitations using a thermodynamically reversible chemical reactor. Nature Chemistry, 11, 638-643. https://doi.org/10.1038/s41557-019-0273-2

All real processes, be they chemical, mechanical or electrical, are thermodynamically irreversible and therefore suffer from thermodynamic losses. Here, we report the design and operation of a chemical reactor capable of approaching thermodynamically... Read More about Overcoming chemical equilibrium limitations using a thermodynamically reversible chemical reactor.