Distributed Multipolar Expansion Approach to Calculation of Excitation Energy Transfer Couplings

We propose a new approach for estimating the electrostatic part of the excitation energy transfer (EET) coupling between electronically excited chromophores based on the transition density-derived cumulative atomic multipole moments (TrCAMM). Our preliminary calculations show that the TrCAMM approach is capable of reproducing the exact Coulombic EET couplings accurately and efficiently and is superior to […]

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On the physical origins of interaction-induced vibrational (hyper)polarizabilities

Zaleśny, R.; Garcia-Borràs, M.; Góra, R. W.; Medved’, M.; Luis, J. M. Phys. Chem. Chem. Phys. 2016, 18 (32), 22467–22477 DOI: 10.1039/C6CP02500E This paper presents the results of a pioneering exploration of the physical origins of vibrational contributions to the interaction-induced electric properties of molecular complexes. In order to analyze the excess nuclear relaxation (hyper)polarizabilities, […]

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Photorelaxation of imidazole and adenine via electron-driven proton transfer along H2O wires

Szabla, R.; Góra, R. W.; Janicki, M.; Sponer, J. Faraday Discuss. 2016 DOI: 10.1039/C6FD00131A Non-adiabatic molecular dynamics simulations and potential energy surface calculations of the photoexcited imidazole–(H2O)5 cluster using the ADC(2) Hamiltonian indicate that electron driven proton transfer (EDPT) along a wire of at least two water molecules may lead to the formation of a […]

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Solvent effects on the photochemistry of 4-aminoimidazole-5-carbonitrile, a prebiotically plausible precursor of purines

Szabla, R.; Šponer, J. E.; Šponer, J.; Sobolewski, A. L.; Góra, R. W. Phys. Chem. Chem. Phys. 2014, 16 (33), 17617–17626 DOI: 10.1039/C4CP02074J Ab initio studies elucidate the molecular mechanisms underlying photostability of a prebiotically plausible precursor of purine nucleotides, indicating importance of charge-transfer-to-solvent processes. We have considered the photochemistry of AICN–water clusters, while including […]

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