Calculation of electronic-excited-state absorption spectra of water clusters using time-dependent density functional theory

L. Huang; S. G. Lambrakos; A. Shabaev; L. Massa

doi:10.1117/12.2176435

21 May 2015 Calculation of electronic-excited-state absorption spectra of water clusters using time-dependent density functional theory

L. Huang, S. G. Lambrakos, A. Shabaev, L. Massa

Author Affiliations +

Proceedings Volume 9472, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI; 94720B (2015) https://doi.org/10.1117/12.2176435
Event: SPIE Defense + Security, 2015, Baltimore, MD, United States

Abstract

Calculations are presented of electronic-excited-state absorption spectra for molecular clusters of H2O using time-dependent density functional theory (TD-DFT). Calculation of excited state resonance structure using TD-DFT can provide interpretation of absorption spectra with respect to molecular structure for excitation by electromagnetic waves at frequencies within the UV-visible range. The absorption spectrum corresponding to electronic excitation states of a molecular cluster consisting of a relatively small number of water molecules should be associated with response features that are intermediate between that of isolated molecules and that of a bulk lattice. TD-DFT calculated absorption spectra represent quantitative estimates that can be correlated with additional information obtained from laboratory measurements and other types of theory based calculations. The DFT software GAUSSIAN was used for the calculations of electronic excitation states presented here.

Citation Download Citation

L. Huang, S. G. Lambrakos, A. Shabaev, and L. Massa "Calculation of electronic-excited-state absorption spectra of water clusters using time-dependent density functional theory", Proc. SPIE 9472, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI, 94720B (21 May 2015); https://doi.org/10.1117/12.2176435

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