Comprehensive theoretical and experimental analysis of UV-radiation and low energy electron induced phenomena in nucleic acid bases (NABs) and base assemblies are presented in this book. NABs are highly photostable; the absorbed energy is dissipated in the form of ultrafast nonradiative decay.
This book highlights the possible mechanisms of these phenomena which is important for all living species and discusses technical challenges in exploration of these processes. This volume will be of particular interest for those involved in understanding the photophysical/photochemical properties of nucleic acids. All chapters are written by the world's leading experts, both from the experimental and computational areas.
Radiation Induced Molecular Phenomena In Nucleic Acids: A Brief Introduction.- Single-Reference Methods for Excited States in Molecules and Polymers.- An Introduction to Equation-of-Motion and Linear-Response Coupled-Cluster Methods for Electronically Excited States of Molecules.- Exploring Photobiology and Biospectroscopy with the Sac-Ci (Symmetry-Adapted Cluster-Configuration Interaction) Method.- Multiconfigurational quantum chemistry for ground and excited states.- Relativistic Multireference Perturbation Theory: Complete Active-Space Second-Order Perturbation Theory (CASPT2) With The Four-Component Dirac Hamiltonian.- Structure and Properties of Molecular Solutes in Electronic Excited States: a Polarizable Continuum Model approach based on the Time-Dependent Density Functional Theory.- Nonadiabatic Excited-State Dynamics of Aromatic Heterocycles: Toward the Time-Resolved Simulation of Nucleobases.- Excited-State Structural Dynamics of Nucleic Acids and Their Components.- Ultrafast Radiationless Decay in Nucleic Acids: Insights From Nonadiabatic Ab Initio Molecular Dynamics.- Decay Pathways of Pyrimidine Bases: From Gas Phase to Solution.- Isolated DNA Base Pairs, Interplay Between Theory and Experiment.- Isolated Guanil#S