21 Sep 2010 17:03:36.277
Click here for full story
The research was led by Professor Peter Beton from the Nanoscience group in the University’s School of Physics and Astronomy in collaboration with Neil Champness, Professor of Chemical Nanoscience in the School of Chemistry.
Professor Champness said: “The majority of work done in this area has focussed on symmetrically-shaped molecules, for example molecules which are square or spherical. The properties and behaviour of these molecules are comparatively easy for us to predict and understand.
“However, only a very small percentage of molecules are symmetrically-shaped and confining our use to those because they are better understood can be seriously constraining.
“Many of the more irregularly-shaped molecules have extremely useful properties — if we can store information on a single molecule which is normally around one nanometre, as opposed to the silicon-based equivalent of 40 to 50 nanometres, we could potentially build devices which are much smaller in size but have a much denser storage capacity.”
The work has involved computer modelling a manganese-based molecule — shaped like a concave ‘jam doughnut’ — and predicting how it would be adsorbed on a gold surface before observing its actual behaviour in the lab. Due to the fragile nature of the molecules, the team had to use a novel electrospray deposition technique to get the molecules onto the surface without destroying their functionality.
The work builds on previous research by the team which was published by Nature back in 2003, where they demonstrated they could trap molecules in a honeycomb-like structure, similar to an egg box, to control the way in which molecules interact with each other and to build more effectively ordered molecular arrays.
The latest research has been supported by the European Community — Research Infrastructure Action, the Engineering and Physical Sciences Research Council (EPSRC) and the European Commission Early Stage Research Training Network, MONET.
The full paper, Self-Assembled Aggregates Formed by Single-Molecule Magnets on a Gold Surface, can be accessed on the Nature Communications website at www.nature.com/ncomms
— ends —
Notes to editors: The University of Nottingham, described by The Times as Britain's “only truly global university”, has award-winning campuses in the United Kingdom, China and Malaysia. It is ranked in the UK's Top 10 and the World's Top 75 universities by the Shanghai Jiao Tong (SJTU) and the QS World University Rankings.
The University is committed to providing a truly international education for its 39,000 students, producing world-leading research and benefiting the communities around its campuses in the UK and Asia.
More than 90 per cent of research at The University of Nottingham is of international quality, according to the most recent Research Assessment Exercise, with almost 60 per cent of all research defined as ‘world-leading’ or ‘internationally excellent’. Research Fortnight analysis of RAE 2008 ranked the University 7th in the UK by research power.
The University’s vision is to be recognised around the world for its signature contributions, especially in global food security, energy & sustainability, and health.