Single molecule spectroscopy of polyfluorenes

摘要: Single molecule spectroscopy resolves some of the crucial issues in photophysics polyfluorenes. After an introduction on single we present ability this technique revealing intramolecular nature photophysical phenomena encountered different phases polyfluorene and fluorenone–fluorene copolymers. First, correlate peculiar emission properties to their chain extension, probed by using polarisation sensitive studies. Moreover, looking at chromophores β phase, demonstrate how a slight bending one-dimensional structure does not disrupt π conjugation while impacting exciton linewidth, parameter for comprehension energy charge transfer. As definitive answer colour degradation, report copolymers, demonstrating monomolecular origin green emission. More generally, presented experiments illustrate unique possibilities offered correlating resulting electronic conjugated polymers.