| Abstract [eng] |
The development of high-performance organic materials-based devices requires a careful selection of molecular structures as well as detailed understanding of the fundamental mechanisms and processes upon photo excitation of single molecules. The employment of intramolecular charge transfer type molecules, typically containing electron accepting and electron donating molecular fragments connected through π-conjugated linker, offers an extensive possibility to manipulate singlet and triplet excited states both through environmental and molecular-structure related parameters. The control of singlet or singlet and triplet states, on the other hand, is an optimal tool to achieve the desired excited state lifetimes for targeted applications. Thus, this dissertation, presented as a collection of articles, is devoted to the photophysical study of different intramolecular charge transfer molecular series by employing steady state and time-resolved photoluminescence experimental techniques in combination with theoretical modelling. The aim of this work is to understand, control and optimize photophysical properties and excited-state processes of studied organic molecules, related to singlet or singlet and triplet excited states altogether and to provide a perspective towards possible applications, such as polarity probes, cation, or temperature sensors, TADF-based OLEDs and information recording tags. |
