The West Australian Facility for Electron Paramagnetic Resonance Spectroscopy (WAEPR) was established in 1995 to provide researchers in the region with access to a state-of-the-art EPR and ENDOR spectrometer.
The Facility was funded by a Department of Education, Employment and Workplace Relations (formerly DETYA) Research Infrastructure (Equipment and Facilities) grant with support from Chemistry, Geology and Geophysics, Geography and Physiology at UWA and Applied Chemistry at Curtin University of Technology and Chemistry at Murdoch University.
Equipment
The Facility contains a Bruker ESP300E X-band spectrometer with the following capabilities:
-
Variable temperature accessory, room temperature to 77 K
-
Field-frequency lock
-
NMR gaussmeter
-
DICE ENDOR
-
Variable temperature accessory for solid non-volatile samples room temperature to 4 K
-
Dual-mode cavity with B1 parallel and perpendicular to B0
-
1 kW Hg lamp for irradiation studies
-
Flow apparatus for reactions and photochemistry in aqueous solutions
-
Matrix-isolation apparatus (described below).
Matrix isolation
The matrix isolation technique involves the isolation and stabilisation of reactive species in a solid inert gas matrix at low temperatures. The most common gases used are neon and argon.
The inert matrix traps these reactive species without reacting with them. Large concentrations of particular species of interest can be obtained by depositing the matrix for longer periods.
Currently this facility is equipped for both neon and argon matrix isolation studies. The matrices are deposited onto a flat, oxygen-free, high-conductivity copper deposition target that is maintained at 4.3K by a continuous-flow liquid helium cryostat.
We are also equipped for temperature dependence and annealing studies of matrices. UV and visible irradiation of the deposited matrices is also possible.
School of Biomedical, Biomolecular and Chemical Sciences
University information
CRICOS Code: 00126G
This Page
Last updated:
Monday, 27 July, 2009 10:05 AM
