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Updated: Dec 13, 2025

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Published on: May 27, 2020
Molecular spectroscopy of aqueous solutions: a theoretical perspective
Tommaso Giovannini1, Franco Egidi1, Chiara Cappelli1
1Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy. chiara.cappelli@sns.it.
Abstract:
Computational spectroscopy is an invaluable tool to both accurately reproduce the spectra of molecular systems and provide a rationalization for the underlying physics. However, the inherent difficulty to accurately model systems in aqueous solutions, owing to water's high polarity and ability to form hydrogen bonds, has severely hampered the development of the field. In this tutorial review we present a technique developed and tested in recent years based on a fully atomistic and polarizable classical modeling of water coupled with a quantum mechanical description of the solute. Thanks to its unparalleled accuracy and versatility, this method can change the perspective of computational and experimental chemists alike.
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