Dr Mary Pryce

Biography

BSc. degree from DCU in 1991. A PhD (1991-1994) was subsequently obtained in organometallic photochemistry. Post doctoral studies were carried out during 1995 and 1996 at the University of Milan  before rejoining the School of Chemical Sciences at DCU in 1997 as a Lecturer.

Research Expertise

PhD Students

  • PhD Student #1
  • PhD Student #2
  • PhD Student #3

Select Publications

Photo‐ and Electrochemical Properties of a CO2 Reducing Ru‐Re quaterpyridine Based Catalyst
  Dr. Liam Frayne, Dr. Nivedita Das, Dr. Avishek Paul, Dr. Saeed Amirjalayer, Prof. Dr. Wybren J. Buma, Prof. Sander Woutersen, Prof. Dr. Conor Long, Prof. Dr. Johannes G. Vos, Dr. Mary T. Pryce      2018      Chem Photo Chem
The unique chemical and physical properties of nanoparticles make them extremely suitable for designing new and improved sensing devices, especially electrochemical sensors and biosensors. Many kinds of nanoparticles, such as metal, oxide and semiconductor nanoparticles have been used for constructing electrochemical sensors and biosensors, and these nanoparticles play different roles in different sensing systems. The important functions provided by nanoparticles include the immobilization of biomolecules, the catalysis of electrochemical reactions, the enhancement of electron transfer between electrode surfaces and proteins, labeling of biomolecules and even acting as reactant. This minireview addresses recent advances in nanoparticle‐based electrochemical sensors and biosensors, and summarizes the main functions of nanoparticles in these sensor systems.

The bridging ligand 2,2′,5′,3′′,6′′,2′′′‐quaterpyridine was utilised to tether [(bpy)2Ru]2+ and [Re(CO)3Cl] subunits for the purpose of photocatalytic CO2reduction. The photophysics and electrochemistry of the complex and associated mononuclear species are reported herein, in addition to photocatalytic, picosecond time‐resolved infrared and computational studies. Photophysical, time‐resolved IR, and electrochemical data together with quantum chemical calculations indicate weak communication between the two metal centres. As a result of the electron‐withdrawing effect of the ligand on both the Ru and Re subunits, the reducing power of the photosensitiser and catalytic unit were significantly attenuated relative to the intermolecular approach utilising [(bpy)3Ru]2+ and (bpy)Re(CO)3Cl.

 

Subtle Changes to Peripheral Ligands Enable High Turnover Numbers for Photocatalytic Hydrogen Generation with Supramolecular Photocatalysts
  Tanja Kowacs, Laura O’Reilly, Qing Pan, Annemarie Huijser, Philipp Lang, Sven Rau, Wesley R. Browne, Mary T. Pryce, and Johannes G. Vos      2016      Inorganic Chemistry
Advanced printing and deposition methodologies are revolutionising the way biological molecules are deposited and leading to changes in the mass production of biosensors and biodevices. This revolution is being delivered principally through adaptations of printing technologies to device fabrication, increasing throughputs, decreasing feature sizes and driving production costs downwards. This review looks at several of the most relevant deposition and patterning methodologies that are emerging, either for their high production yield, their ability to reach micro- and nano-dimensions, or both. We look at inkjet, screen, microcontact, gravure and flexographic printing as well as lithographies such as scanning probe, photo- and e-beam lithographies and laser printing. We also take a look at the emerging technique of plasma modification and assess the usefulness of these for the deposition of biomolecules and other materials associated with biodevice fabrication.

The bridging ligand 2,2′,5′,3”,6”,2”’-quaterpyridine was utilized to tether [(bpy)2Ru]2+ and [Re(CO)3Cl] subunits for the purpose of photocatalytic CO2 reduction. The photophysics and electrochemistry of the complex and associated mononuclear species are reported herein, in addition to photocatalytic, picosecond time-resolved infrared and computational studies. Photophysical, time resolved IR, and electrochemical data together with quantum chemical calculations indicate weak communication between the two metal centres. Due to the electron withdrawing effect of the ligand on both the Ru and Re subunits, the reducing power of the photosensitizer and catalytic unit were significantly attenuated relative to the intermolecular approach utilizing [(bpy)3Ru]2+ and (bpy)Re(CO)3Cl, whereby neither an oxidative or reductive quenching electron transfer pathway was suggested as feasible.

 

Supramolecular bimetallic assemblies for photocatalytic hydrogen generation from water.
  Tanja Kowacs, Qing Pan, Philipp Lang, Laura O'Reilly, Sven Rau, Wesley R. Browne, Mary T. Pryce, Annemarie Huijser and Johannes G. Vos      2015      Faraday Discussions

A series of supramolecular assemblies of the type [Ru(L-L)2(L’-L)MX2)]n+ are reported where L-L is 2,2′-bipyridine (bipy), 4,4′-di-tetra-butyl-bipyridine (tbbipy) or 4,4′- diethoxycarbonyl-2,2′-bipyridine (dceb), L-L’ is tetrapyrido[3,2-a:2′,3′-c:3”,2”-h:2”’,3”’- j]phenazine (tpphz), 2,2′:5′,2”-terpyridine (2,5-bpp), 2,2′:6′,2”-terpyridine, (2,6-bpp), 2,5- di(pyridine-2-yl)pyrazine (2,5-dpp) or 2,3-di(pyridine-2-yl)pyrazine (2,3-dpp), and MX2 is PdCl2, PtCl2 or PtI2. The photocatalytic behaviour with respect to hydrogen generation of these compounds and their ultrafast photophysical properties are discussed as a function of the nature of the peripheral ligands, the bridging ligands and the catalytic centre. The results obtained show how differences in the chemical composition of the photocatalysts can affect intramolecular photoinduced electron transfer processes and the overall photocatalytic efficiency.

 

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