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This article is devoted to the exploration of the benefits of a new ultrafast confocal pump–probe technique, able to study the photophysics of different structured materials with nanoscale resolution. This tool offers many advantages over standard stationary microscopy techniques because it directly interrogates excited state dynamics in molecules, providing access to both radiative and non-radiative deactivation processes at a local scale. In this paper we present a few different examples of its application to organic semiconductor systems. The first two are focussed on the study of the photophysics of phase-separated polymer blends: (i) a blue-emitting polyfluorene (PFO) in an inert matrix of PMMA and (ii) an electron donor polythiophene (P3HT) mixed with an electron acceptor fullerene derivative (PCBM). The experimental results on these samples demonstrate the capability of the technique to unveil peculiar …
Royal Society of Chemistry
Publication date: 
1 Jan 2012

Tersilla Virgili, Giulia Grancini, Egle Molotokaite, Inma Suarez-Lopez, Sai Kiran Rajendran, Andrea Liscio, Vincenzo Palermo, Guglielmo Lanzani, Dario Polli, Giulio Cerullo

Biblio References: 
Volume: 4 Issue: 7 Pages: 2219-2226