Soft-mode anisotropy in the negative thermal expansion material ReO3
Physical Review B American Physical Society (APS) 104:21 (2021) 214102
From n- to p-Type Material: Effect of Metal Ion on Charge Transport in Metal-Organic Materials.
ACS applied materials & interfaces 13:44 (2021) 52055-52062
Abstract:
An intriguing new class of two-dimensional (2D) materials based on metal-organic frameworks (MOFs) has recently been developed that displays electrical conductivity, a rarity among these nanoporous materials. The emergence of conducting MOFs raises questions about their fundamental electronic properties, but few studies exist in this regard. Here, we present an integrated theory and experimental investigation to probe the effects of metal substitution on the charge transport properties of M-HITP, where M = Ni or Pt and HITP = 2,3,6,7,10,11-hexaiminotriphenylene. The results show that the identity of the M-HITP majority charge carrier can be changed without intentional introduction of electronically active dopants. We observe that the selection of the metal ion substantially affects charge transport. Using the known structure, Ni-HITP, we synthesized a new amorphous material, a-Pt-HITP, which although amorphous is nevertheless found to be porous upon desolvation. Importantly, this new material exhibits p-type charge transport behavior, unlike Ni-HITP, which displays n-type charge transport. These results demonstrate that both p- and n-type materials can be achieved within the same MOF topology through appropriate choice of the metal ion.Structural units of binary vanadate glasses by X-ray and neutron diffraction
Journal of Non-Crystalline Solids Elsevier 572 (2021) 121120
Erratum: Illustrated formalisms for total scattering data: a guide for new practitioners. Corrigendum and addendum.
Journal of applied crystallography 54:Pt 5 (2021) 1542-1545
Abstract:
[This corrects the article DOI: 10.1107/S1600576720015630.].Orientational order and phase transitions in deuterated methane: a neutron total scattering and reverse Monte Carlo study.
Journal of physics. Condensed matter : an Institute of Physics journal 34:1 (2021)