Patrick W. Doheny
A5009385952- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Metal-Organic Frameworks: Synthesis and Applications
- Magnetism in coordination complexes
- Catalytic Processes in Materials Science
- Magnetic and transport properties of perovskites and related materials
- Organic and Molecular Conductors Research
- Advanced Condensed Matter Physics
- Machine Learning in Materials Science
- Catalysis and Oxidation Reactions
- Multiferroics and related materials
- Lanthanide and Transition Metal Complexes
- Electrochemical Analysis and Applications
- Mesoporous Materials and Catalysis
- Metal complexes synthesis and properties
- Conducting polymers and applications
- CO2 Reduction Techniques and Catalysts
- Advanced NMR Techniques and Applications
- Membrane Separation and Gas Transport
- Electron Spin Resonance Studies
- Ionic liquids properties and applications
- Thermal Expansion and Ionic Conductivity
- Molecular spectroscopy and chirality
- Covalent Organic Framework Applications
- Aerogels and thermal insulation
University of Kent
2022-2024
University of Birmingham
2024
The University of Sydney
2018-2023
Porosity and surface area analysis play a prominent role in modern materials science. At the heart of this sits Brunauer-Emmett-Teller (BET) theory, which has been remarkably successful contribution to field The BET method was developed 1930s for open surfaces but is now most widely used metric estimation areas micro- mesoporous materials. Despite its widespread use, calculation causes spread reported areas, resulting reproducibility problems both academia industry. To prove this, analysis,...
Understanding the nature of charge transfer mechanisms in 3-dimensional metal–organic frameworks (MOFs) is an important goal owing to possibility harnessing this knowledge design electroactive and conductive frameworks. These materials have been proposed as basis for next generation technological devices applications energy storage conversion, including electrochromic devices, electrocatalysts, battery materials. After nearly two decades intense research into MOFs, remain relatively poorly...
Ambient temperature spin crossover with wide hysteresis has been achieved in 2D Hofmann-type materials, where removal of guest molecules optimises ligand–ligand interactions, resulting increased cooperativity.
Dy(OH) 3 has impressive magnetocaloric performance optimised around 20 K making it suitable for hydrogen liquefaction using magnetic cooling.
Porosity and surface area analysis play a prominent role in modern materials science, where 123 their determination spans the fields of natural sciences, engineering, geology medical 124 research. At heart this sits Brunauer-Emmett-Teller (BET) theory,[1] which has been 125 remarkably successful contribution to field science. The BET method was 126 developed 1930s is now most widely used metric for estimation 127 areas porous materials.[2] Since first developed, there an 128 explosion...
Gaining a fundamental understanding of charge transfer mechanisms in three-dimensional Metal–Organic Frameworks (MOFs) is crucial to the development electroactive and conductive porous materials.
The elucidation of mechanisms to modulate the properties multifunctional electroactive, conductive, and magnetic porous materials is desirable aid their future application. synthesis characterization a two-dimensional (2D) mixed-valence metal–tetraoxolene coordination polymer containing redox-active dication, (PhenQ)[Fe2(Clan)3]·solvent (1; Clann– = deprotonated 3,6-dichloro-2,5-dihydroxy-1,4-benzoquinone; PhenQ2+ 5,6-dihydropyrazino[1,2,3,4-lmn][1,10]-phenanthrolindiium), are reported....
The development of sustainable and efficient cryogenic cooling materials is currently the subject extensive research, with aim relieving dependence current low-temperature methods on expensive nonrenewable liquid helium. One potential method to achieve this use demonstrating magnetocaloric effect, where cycling an applied magnetic field leads a net effect due changes in entropy upon application removal external field. This study details synthesis characterization Ln3(adipate)4.5(DMF)2 series...
Porosity and surface area analysis play a prominent role in modern materials science, where 123 their determination spans the fields of natural sciences, engineering, geology medical 124 research. At heart this sits Brunauer-Emmett-Teller (BET) theory,[1] which has been 125 remarkably successful contribution to field science. The BET method was 126 developed 1930s is now most widely used metric for estimation 127 areas porous materials.[2] Since first developed, there an 128 explosion...
This work reports the competitive magnetocaloric effect of some simple lanthanide fluoride materials with cations high magnetic anisotropy. Of these, HoF3 is particularly promising due to exhibiting a entropy change under modest applied fields at higher temperatures, which only decreases modestly temperature such that it has potential for cooling hydrogen liquefaction. Spin-polarized neutron spectroscopy indicates its conventional likely presence ferromagnetic fluctuations highly anisotropic...
The hybrid ultraporous material TIFSIX-Ni ([Ni(pyrazine)2(TiF6)]n) was incorporated into a composite ink for the first time three-dimensional (3D) printing of monoliths. large-scale synthesis completed using two different Ni(II) salts, with CO2 uptakes 1.90 mmol g-1 achieved mechanochemically assisted thermal synthesis. monoliths were then tested capture and release gas electric swing adsorption (ESA) under dry humid conditions. A working capacity 1.7% (comparing dynamic data isotherm data)...
Nanoporous Materials In article number 2201502, David Fairen-Jimenez and co-workers conduct a round-robin exercise by providing 18 already-measured adsorption isotherms to sixty-one labs show that the reproducibility of Brunauer–Emmett–Teller (BET) area determination in micro- mesoporous materials remains largely ignored issue. To solve this, new computational approach—called BETSI—that expands on Rouquerol criteria makes an unambiguous BET assignment possible is developed.
Accelerated ageing reactions that take place between two solid materials on contact in the absence of added solvent have been used to synthesize spin-crossover-active 1D coordination polymers and one their Cu(II) analogues. The hygroscopy ligands relative humidity reaction chamber shown be particularly important factors rate reaction. Small-scale a few individual crystals allowed observation deliquescence 4-aminotriazole ligand at high humidity. metal salt does not dissolve, diffuses into...
Porosity and surface area analysis play a prominent role in modern materials science, where their determination spans the fields of natural sciences, engineering, geology medical research. At heart this sits Brunauer-Emmett-Teller (BET) theory,[1] which has been remarkably successful contribution to field science. The BET method was developed 1930s for open surfaces but is now most widely used metric estimation areas micro- mesoporous materials.[2] Since first developed, there an explosion...
We use in situ synchrotron X-ray diffraction measurements to monitor the solvothermal crystallisation mechanism of aperiodic metal–organic framework TRUMOF-1. Following an initial incubation period, TRUMOF-1 forms as a metastable intermediate that subsequently transforms into ordered product with triclinic crystal symmetry. determine structure this phase, which we call P1-TRUMOF-1, and show it is related through topotactic reorganisation linker occupancies. Our results imply degree nature...
The magnetic properties of a 2D layered material consisting high-spin Co2+ complexes, [Co(NH3NH2)2(H2O)2Cl2]Cl2 (CoHyd2Cl4), have been extensively characterized using electron paramagnetic resonance, susceptibility, and low-temperature heat capacity measurements. Electron resonance spectroscopy studies suggest that below 50 K, the J = 3/2 orbital triplet state Co is gradually depopulated in favor 1/2 spin state, which dominant 20 K. In light this, susceptibility has fitted with two-level...
We use
Porosity and surface area analysis play a prominent role in modern materials science, where 123 their determination spans the fields of natural sciences, engineering, geology medical 124 research. At heart this sits Brunauer-Emmett-Teller (BET) theory,[1] which has been 125 remarkably successful contribution to field science. The BET method was 126 developed 1930s is now most widely used metric for estimation 127 areas porous materials.[2] Since first developed, there an 128 explosion...
Electroactive metal-organic frameworks (MOFs) are an attractive class of materials owing to their multifunctional 3-dimensional structures, the properties which can be modulated by changing redox states components. In order realise both fundamental and applied goals for these materials, a deeper understanding structure-function relationships that govern charge transfer mechanisms is required. Chemical or electrochemical reduction framework [Zn(BPPFTzTz)(tdc)]·2DMF, hereafter denoted ZnFTzTz...
Chemical reduction of an electroactive metal–organic framework based on napthalenediimide modulates carbon dioxide uptake and heat adsorption.
Metal–Organic Frameworks (MOFs) containing DPTzTz were synthesised and characterised through physical, spectroscopic electrochemical means. The impact of inter-ligand distance between pairs on the properties MOF was elucidated.