Journal article
Synthesis and single chain fluorescence of a sulfonated conjugated polymer
DE Gómez, TAT Tan, JM White, TDM Bell, KP Ghiggino
Australian Journal of Chemistry | CSIRO PUBLISHING | Published : 2009
DOI: 10.1071/CH09348
Abstract
A water-soluble sulfonated conjugated phenylene vinylene polymer (Alt-Co-DPS-PPV) has been prepared by a HornerEmmons reaction involving the condensation of a disulfonyl aryl bisphosphonate and terephthaldehyde. The photoluminescence from single chains of the polymer dispersed in a poly(vinyl alcohol) film at room temperature has been studied by confocal imaging techniques. Fluorescence intensity trajectories from Alt-Co-DPS-PPV single chains exhibit intermittencies or 'blinking' on both short (sub-millisecond) and long (seconds) time scales. The short time-scale intensity fluctuation data has been successfully analyzed using a simple model involving excursions from the fluorescent excited s..
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Awarded by Australian Research Council
Funding Acknowledgements
T. D. M. B. acknowledges the award of the University of Melbourne Faculty of Science Centenary Fellowship. K. P. G. and T. D. M. B. thank the Australian Research Council for financial support of this research under Discovery Project DP0664163. We also thank Professors Johan Hofkens and Frans De Schryver, Katholieke University of Leuven, for their advice in establishing the single molecule instrumentation at the University of Melbourne. We acknowledge the UNICHE Scheme for scholarship funding support (to T. A. T. T.) and Ms Emma Hooley and Ms Su Khim Ling for assistance with the photophysical measurements.