[seminar] [DANAS]: Mattia Anzola, 25.09. (srijeda) 14h (c.t.), seminar ZTF-a

[Kornelija Passek-Kumericki]

Modelling interacting chromophores:
aggregates and energy transfer

Mattia Anzola
University of Parma, Italy

Datum: Srijeda, 25.09 2019.
Vrijeme : 14 sati c.t.
Mjesto: IRB, seminar ZTF-a


Sažetak

In molecular systems intermolecular forces are much weaker than the chemical 
bonds inside each individual molecular unit. I will present two examples of 
system where weak intermolecular interactions can markedly affect optical 
properties. In molecular aggregates, optical spectra cannot be calculated as 
the sum of molecular spectra: I will focus on models to describe J and H 
aggregates both in one and two dimensions, and calculate absorption and 
emission spectra. In the second part of the talk I will show how different 
molecules can interact at large distances (10-100 A) in the so called Förster 
Resonance Energy Transfer
(FRET), in which the excitation can "jump" from a molecule (Donor), to another 
one (Acceptor) through non-radiative dipole-dipole coupling. Here I will 
present preliminary results of a Molecular Dynamics study with the aim of 
rationalize the role of slow degrees of freedom during resonant energy transfer 
mechanism.
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