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ESR 7: Evangelos Balanikas
UV-induced processes in guanine quadruplexes studied by time-resolved optical spectroscopy: from photon absorption to radical reactivity
Host: Dr. Dimitra Markovitsi

B2:  Lasers, Interactions and Dynamics Laboratory
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LightDyNAmics Research
Scientific Background
Conferences
Guanine Quadruplexes (G4) are four-stranded structures formed by guanine rich DNA sequences. They have been correlated with the oxidative damage which perturbs biological functions. In addition, G4 structures are studied in respect to their applications in molecular electronics and nanotechnologies.
The objective of the research is to study the generation and the reactivity of guanine radicals (including electron holes, important in charge transport) induced by absorption low energy UV radiation by G4. The investigation will involve the use of several experimental and computational techniques:
  • The electrons ejected by photo-ionization and the resulting base radicals will be studied by time-resolved absorption spectroscopy and time-resolved circular dichroism, from nanoseconds to milliseconds.
  • The dynamics of the excited states, expected to play a role in the photo-ionization process, will be studied by fluorescence spectroscopy, from femtoseconds to nanoseconds.
  • The observed optical spectra will be interpreted by means of quantum chemistry methods.
Diploma in Applied Mathematical and Physical Sciences at National Technical University of Athens(NTUA)  (2012-2017)
Nine month internship and Diploma Thesis preparation in “Ionizing Radiation Dose Enhancement Through the Use of Gold Nanoparticles” Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “NCSR-Demokritos” (2016-2017).Three months internship at the Institute of Medical Radiation Biology, the University of Duisburg-Essen in Germany (2017)
He participated in the 9th edition of the JED PhD Students day in Toulouse on 11th of June. Klick here for the abstract
He held an oral presentation on the fédération de Chimie-Physique de Paris Saclay CPPS Journée in Paris on 3rd of July. Klick here for the abstract

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This project has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant agreement No 765266.
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