Hybrid Coupled Cluster and Molecular Dynamics Approach: Application to the Excitation Spectrum of Cytosine in the Native DNA Environment

December 7, 2006

Journal Article

Hybrid Coupled Cluster and Molecular Dynamics Approach: Application to the Excitation Spectrum of Cytosine in the Native DNA Environment

Abstract

Evolution of the excited state energies of cytosine base in the native DNA environment was investigated using hybrid coupled cluster and classical molecular dynamics approach. The time averaged excitation energies obtained with the variant of the completely renormalized equation-of-motion with singles, doubles, and non-iterative triples approach that includes a bulk of the correlation effects for excited states, are compared with the analogous calculations in the gas phase. Significant blue shifts for the two lowest singlet excitation energies can be observed as a result of interaction of the quantum system with surrounding environment.

Revised: March 28, 2007 | Published: December 7, 2006

Citation

Valiev M., and K. Kowalski. 2006. Hybrid Coupled Cluster and Molecular Dynamics Approach: Application to the Excitation Spectrum of Cytosine in the Native DNA Environment. Journal of Chemical Physics 125, no. 21:Art. No. 211101. PNNL-SA-49559. doi:10.1063/1.2403847