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Winner of the IUPAC Prize
for Young Chemists - 2007


Deanna Michelle D’Alessandro wins one of the five IUPAC Prizes for Young Chemists, for her Ph.D. thesis work entitled "Stereochemical Effects on Intervalence Charge Transfer."

Current address (at the time of application)

School of Chemistry
The University of Sydney
Sydney, New South Wales 2006, Australia

E-mail: [email protected]

Academic degrees

  • Ph.D. James Cook University, Queensland, Australia; Awarded May 2006; Specialising in Chemistry.
  • Bachelor of Science with Honours (Class I), James Cook University, Queensland, Australia; Awarded April 2000; Major in Chemistry with sub-majors in Physics and Mathematics.

Ph.D. Thesis

Title Stereochemical Effects on Intervalence Charge Transfer

Adviser Professor F. Richard Keene

Thesis Committee Professor Dr Edwin C. Constable (Universität Basel, Switzerland); Professor Michael D. Ward (University of Sheffield, England)


Electron transfer is ubiquitous in chemical, physical and biological systems – the phenomenon is fundamental in natural processes such as photosynthesis, and in materials science applications. Mixed-valence dinuclear complexes have received significant attention in electron transfer studies as the characteristics of their intervalence charge transfer (IVCT) bands provide a powerful probe of the factors which govern the barrier to electron transfer. The Franck-Condon factors correspond to the reorganisational energies within the inner- and outer-sphere (respectively), the redox asymmetry, is the energy difference between the two metal-based chromophores, and . E' incorporates spin-orbit coupling contributions.

Previously, these factors have been probed by the variation of “global” features of the complexes – such as the identity and coordination environments of the metal centres, or through variation of properties of the solvating medium. The work reported in this thesis is the first to reveal stereochemical effects on the electrochemical, spectral and IVCT characteristics of a range of di- and tri-nuclear complexes incorporating the bridging ligands shown in Figure 1 [see full text from below], and challenges prior assertions that the inherent stereochemistry of polymetallic assemblies would have no influence on their physical properties...[full text; pdf file - 1.46MB]


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