1. Industrial Research Limited, P.O. Box 31310, Lower Hutt 5040, New Zealand
2. MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, P.O. Box 600, Wellington 6040, New Zealand
3. School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington 6040, New Zealand
4. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States