Towards functional surfaces and nanostructures using non-volatile molecules James N. O’Shea School of Physics & Astronomy Nottingham Nanoscience and Nanotechnology Centre University of Nottingham 1st MONET Marie Curie EST network workshop, Reading 5th-6th March 2007

Towards functional surfaces using non-volatile molecules Interesting monolayers of non-volatile molecules Investigating the fundamental physics Getting non-volatile molecules onto surfaces in UHV Results

Functional surfaces from non-volatile molecules Molecular solar cells Ru535

Functional surfaces from non-volatile molecules Biomimetic molecular sensors

Functional surfaces from non-volatile molecules Supra-molecular templates L. M. A. Perdigão et al, J. Phys. Chem. B, 110, 12539 (2006)

Investigating the fundamental physics Mapping occupied and unoccupied densities of states | XPS

Investigating the fundamental physics Mapping occupied and unoccupied densities of states | UPS

Investigating the fundamental physics Mapping occupied and unoccupied densities of states | XAS

Investigating the fundamental physics Charge transfer dynamics | ‘Core-hole clock’ Participator

Investigating the fundamental physics Charge transfer dynamics | ‘Core-hole clock’ Auger

Investigating the fundamental physics Charge transfer dynamics | ‘Core-hole clock’ Spectator

Investigating the fundamental physics Charge transfer dynamics | ‘Core-hole clock’ J. Ben Taylor et al, in preparation

Investigating the fundamental physics Back donation | A higher Auger

Investigating the fundamental physics Back donation | A higher Auger

Getting non-volatile molecules onto surfaces in UHV Electrospray ionisation of liquid samples 2.5 kV

Getting non-volatile molecules onto surfaces in UHV Electrospray deposition in vacuum 10-2 torr 10-5 torr

Getting non-volatile molecules onto surfaces in UHV Electrospray deposition of carbon nanotubes in vacuum J. N O'Shea et al, Nanotechnology 18 (2007) 035707

Getting non-volatile molecules onto surfaces in UHV UHV electrospray deposition 10-7 torr water-methanol solution

Getting non-volatile molecules onto surfaces in UHV UHV electrospray deposition of Ru535/TiO2(110) Louise Mayor et al, in preparation

Taking it further… Functional supramolecular networks and molecular traps J. N. O’Shea et al, Surface Science 486,157 (2001)

Summary In-situ UHV electrospray deposition allows us to investigate non-volatile molecules and nanostructures with a suite of surface science techniques. Electron spectroscopy can reveal a great deal about the movement of electrons and the interactions between molecules and surfaces.

Acknowledgements Chris Satterley Joachim Schnadt Postdocs and PhD Students Chris Satterley Janine Swarbrick J. Ben Taylor Louise Mayor Graziano Magnano Anna Rienzo Collaborators Joachim Schnadt Peter Beton Neil Champness Philip Moriarty Karina Schulte Funding EPSRC for electrospray development and supramolecular templates CCLRC for access to SRS EC FP6 Research Infrastructure for access to MAX-lab EC FP6 Marie Curie Actions for the MONET EST network