ChemRxiv
These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
1/1
0/0

Multiscale Modeling of Molecular Structure and Optical Properties of Complex Supramolecular Aggregates

preprint
submitted on 29.05.2020 and posted on 01.06.2020 by Anna S. Bondarenko, Ilias Patmanidis, Riccardo Alessandri, Paulo C. T. Souza, Thomas L.C. Jansen, Alex H. de Vries, Siewert-Jan Marrink, Jasper Knoester

Supramolecular aggregates of synthetic dye molecules offer great perspectives to prepare biomimetic functional materials for light-harvesting and energy transport. The design is complicated by the fact that structure-property relationships are hard to establish, because the molecular packing results from a delicate balance of interactions and the excitonic properties that dictate the optics and excited state dynamics, in turn sensitively depend on this packing. Here we show how an iterative multiscale approach combining molecular dynamics and quantum mechanical exciton modeling can be used to obtain accurate insight into the packing of thousands of cyanine dye molecules in a complex double-walled tubular aggregate in close interaction with its solvent environment. Our approach allows us not only to answer open questions on the structure of these prototypical aggregates, but also about their molecular-scale structural and energetic heterogeneity, and the microscopic origin of their photophysical properties. This opens the route to accurate predictions of energy transport and other functional properties.

History

Email Address of Submitting Author

a.bondarenko@rug.nl

Institution

University of Groningen

Country

Netherlands

ORCID For Submitting Author

0000-0001-5242-3281

Declaration of Conflict of Interest

The authors declare no competing interests.

Exports