G. Sych “Design and characterization of new intra-and inter- molecular donor-acceptor system” doctoral dissertation defence

Author, Institution: Galyna Sych, Kaunas University of Technology

Science area, field of science: Technological Sciences, Materials Engineering T 008

Scientific Supervisor: Prof. Habil. Dr. Juozas Vidas Gražulevičius (Kaunas University of Technology,
Technological sciences, Materials Engineering T 008)

Scientific Advisor: dr. Jūratė Simokaitienė (Kaunas University of Technology, Natural Sciences, Chemistry N 003).

Dissertation Defence Board of Material Engineering Scientific Field:

Prof. Dr. Habil. Sigitas Tamulevičius (Kaunas University of Technology, Technological sciences, Materials Engineering, T 008) – chairman;
Dr. Mindaugas Andrulevičius (Kaunas University of Technology, Technological sciences, Materials Engineering, T 008);
Prof. Dr. Saulius Grigalevičius (Kaunas University of Technology, Technological sciences, Materials Engineering, T 008);
Aurimas Vyšniauskas (Centre for Physical Sciences and Technology, Natural Sciences, Physics, N 002)
Prof. Dolores Velasco (University of Barcelona, Natural Sciences, Chemistry, N 003).

The doctoral dissertation is available on the internet and and at the library of Kaunas University of Technology (K. Donelaičio St. 20, Kaunas, Lithuania).

Annotation:

In this work several groups of donor-acceptor compounds characterized with intra- or intermolecular charge transfer were designed and investigated. Four new donor-acceptor tetrafluorostyrene based monomers and polymers were synthesized. The effect of donor strength on photophysical, electrochemical and thermal properties of the monomers and polymers was investigated. Bipolar quinoline and carbazole derivatives were found to form versatile exciplexes and were applied in white OLEDs. The study showed that donor-acceptor and donor-π-acceptor derivatives of quinoline and di-tert-butyl phenothiazine showed dual emission, delayed fluorescence and mechanoresponsive emission. In this study three new compounds containing cyano carbazolyl moiety with high triplet state energies were investigated as exciplex forming compounds.