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TheoDORE: a Toolbox for a Detailed and Automated Analysis of Electronic Excited State Computations

preprint
submitted on 18.12.2019 and posted on 23.12.2019 by Felix Plasser

The advent of ever more powerful excited-state electronic structure methods has lead to a tremendous increase in the predictive power of computation but it has also rendered the analysis of these computations more and more challenging and time-consuming. TheoDORE tackles this problem through providing tools for post-processing excited-state computations, which automate repetitive tasks and provide rigorous and reproducible descriptors. Interfaces are available for ten different quantum chemistry codes and a range of excited-state methods implemented therein. This article provides an overview of three popular functionalities within TheoDORE, a fragment-based analysis for assigning state character, the computation of exciton sizes for measuring charge transfer, and the natural transition orbitals used not only for visualisation but also for quantifying multiconfigurational character. Using the examples of an organic push-pull chromophore and a transition metal complex, it is shown how these tools can be used for a rigorous and automated assignment of excited-state character. In the case of a conjugated polymer, we venture beyond the limits of the traditional molecular orbital picture to uncover spatial correlation effects using electron-hole correlation plots and conditional densities.

History

Email Address of Submitting Author

f.plasser@lboro.ac.uk

Institution

Loughborough University

Country

United Kingdom

ORCID For Submitting Author

0000-0003-0751-148X

Declaration of Conflict of Interest

No conflict of interest.

Version Notes

Before submission.

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