Hernando Jordi, van Dijk Erik M H P, Hoogenboom Jacob P, García-López Juan-José, Reinhoudt David N, Crego-Calama Mercedes, García-Parajó María F, van Hulst Niek F
MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands.
Phys Rev Lett. 2006 Nov 24;97(21):216403. doi: 10.1103/PhysRevLett.97.216403. Epub 2006 Nov 20.
We present a single-molecule study unraveling the effect of static disorder on the vibrational-assisted ultrafast exciton dynamics in multichromophoric systems. For every single complex, we probe the initial exciton relaxation process by an ultrafast pump-probe approach and the coupling to vibrational modes by emission spectra, while fluorescence lifetime analysis measures the amount of static disorder. Exploiting the wide range of disorder found from complex to complex, we demonstrate that static disorder accelerates the dephasing and energy relaxation rate of the exciton.
