Quantum mechanical studies on the photophysics and the photochemistry of nucleic acids and nucleobases
The photophysics and photochemistry of DNA is of great importance due to the potential
damage of the genetic code by UV light. Quantum mechanical studies have played a key …
damage of the genetic code by UV light. Quantum mechanical studies have played a key …
Excited states in DNA strands investigated by ultrafast laser spectroscopy
Ultrafast laser experiments on carefully selected DNA model compounds probe the effects of
base stacking, base pairing, and structural disorder on excited electronic states formed by …
base stacking, base pairing, and structural disorder on excited electronic states formed by …
Charge separation and charge delocalization identified in long-living states of photoexcited DNA
Base stacking in DNA is related to long-living excited states whose molecular nature is still
under debate. To elucidate the molecular background we study well-defined …
under debate. To elucidate the molecular background we study well-defined …
Photoinduced charge separation and DNA self-repair depend on sequence directionality and stacking pattern
Charge separation is one of the most common consequences of the absorption of UV light
by DNA. Recently, it has been shown that this process can enable efficient self-repair of …
by DNA. Recently, it has been shown that this process can enable efficient self-repair of …
A 'bottom up', ab initio computational approach to understanding fundamental photophysical processes in nitrogen containing heterocycles, DNA bases and base …
The availability of non-radiative decay mechanisms by which photoexcited molecules can
revert to their ground electronic state, without experiencing potentially deleterious chemical …
revert to their ground electronic state, without experiencing potentially deleterious chemical …
New insights into the photophysics of DNA nucleobases
VI Prokhorenko, A Picchiotti, M Pola… - The journal of …, 2016 - ACS Publications
We report the results of an extended time-resolved study of DNA nucleobases in aqueous
solutions conducted in the deep UV using broad-band femtosecond transient absorption …
solutions conducted in the deep UV using broad-band femtosecond transient absorption …
Efficient UV-induced charge separation and recombination in an 8-oxoguanine-containing dinucleotide
During the early evolution of life, 8-oxo-7, 8-dihydro-2′-deoxyguanosine (O) may have
functioned as a proto-flavin capable of repairing cyclobutane pyrimidine dimers in DNA or …
functioned as a proto-flavin capable of repairing cyclobutane pyrimidine dimers in DNA or …
On the nature of DNA hyperchromic effect
M D'Abramo, CL Castellazzi, M Orozco… - The Journal of …, 2013 - ACS Publications
A combined theoretical–experimental study of the hyperchromic effect as occurring in the
denaturation of a double stranded polyA-polyT is presented. Our theoretical/computational …
denaturation of a double stranded polyA-polyT is presented. Our theoretical/computational …
DNA as UV light–harvesting antenna
IL Volkov, ZV Reveguk, PY Serdobintsev… - Nucleic acids …, 2018 - academic.oup.com
The ordered structure of UV chromophores in DNA resembles photosynthetic light-
harvesting complexes in which quantum coherence effects play a major role in highly …
harvesting complexes in which quantum coherence effects play a major role in highly …
Effect of the DNA Polarity on the Relaxation of its Electronic Excited States
The DNA polarity, ie., the order in which nucleobases are connected together via the
phosphodiester backbone, is crucial for several biological processes. But, so far, there has …
phosphodiester backbone, is crucial for several biological processes. But, so far, there has …