Preprint Article Version 1 This version is not peer-reviewed

Chiroptical Symmetry Analysis (CSA): on the Way from the Understanding of Highly Symmetric Systems to the Development of Chiroptical Applications

Version 1 : Received: 14 June 2018 / Approved: 15 June 2018 / Online: 15 June 2018 (14:30:23 CEST)

How to cite: Castro-Fernández, S.; Peña-Gallego, Á.; Mosquera, R.A.; Alonso-Gómez, J.L. Chiroptical Symmetry Analysis (CSA): on the Way from the Understanding of Highly Symmetric Systems to the Development of Chiroptical Applications. Preprints 2018, 2018060256 (doi: 10.20944/preprints201806.0256.v1). Castro-Fernández, S.; Peña-Gallego, Á.; Mosquera, R.A.; Alonso-Gómez, J.L. Chiroptical Symmetry Analysis (CSA): on the Way from the Understanding of Highly Symmetric Systems to the Development of Chiroptical Applications. Preprints 2018, 2018060256 (doi: 10.20944/preprints201806.0256.v1).

Abstract

The high sensitivity of chiroptical responses to conformational changes and supramolecular interactions has prompted an increasing interest in the development of chiroptical applications. However, prediction and understanding the chiroptical responses of the necessary large systems may not be affordable for calculations at high levels of theory. In order to facilitate the development of chiroptical applications, methodologies capable of evaluating the chiroptical responses of large systems are necessary. Exciton chirality method has been extensively used for the interaction between two independent chromophores through the Davydov model. For systems presenting C2 or D2 symmetry one can get to the same results by applying the selection rules. In the present article, analysis of the selection rules for systems with symmetries Cn and Dn with n = 3 and 4 is used to uncover the origin of their chiroptical responses. We hope that the use of the chiroptical symmetry analysis (CSA) for systems presenting the symmetries explored herein as well as for systems presenting higher symmetries will serve as a useful tool for the development of chiroptical applications.

Subject Areas

Chirality; Chiroptical Responses; Exciton Chirality; Selection Rules; Symmetry

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