To develop efficient polymeric thermally activated delayed fluorescence (TADF) emitters for solution-processable organic light-emitting diodes (OLEDs), we propose a strategy of controlling intermolecular and intramolecular charge-transfer characteristics in polymeric materials by exploiting hydrogen bonding.
The dopants will be functionalized with complementary hydrogen-bonding donor groups that can form multiple hydrogen bonds with the hydrogen-bonding acceptor pendant groups present along the polymer backbone. As a result, the power of self-sorting of donors and acceptors attached to the polymeric backbone will be exploited for decreasing singlet–triplet splitting and energy losses of potential TADF polymers. This strategy will be tested in the frame of the project allowing to generate a myriad of functional TADF polymer systems. Highlighting, the main objective of the project is to design and synthesize polymeric emitters with controllable thermally activated delayed fluorescence for solution-processable OLEDs and perovskite LEDs. Having such objective, the main tasks will include: molecular design using quantum chemical calculations ? synthesis of potential monomers and polymers ? characterizations of the obtained products ? thermal, electrochemical, optical, photoelectrical and TADF analyses of new emitters ? OLED and perovskite LEDs fabrication and characterization. Hybrid OLED-Perovskite LED will be also examined to explore the feasibility of realizing white light LED by combining the blue emission from the newly developed OLED with the orange-yellow light from the perovskite layer. The interdisciplinary consortium of the project have the required backgrounds to achieve the targets of the project.
Project funding:
Interngovernmental programme administrated by Research Council of Lithuania: Lithuania–Latvia–China (Taiwan)
Project results:
• Anticipate to publish 5 papers over the course of three years.
• Co-host technical section at an international conference.
• Provide excellent opportunities for students to thrive in this international collaboration.
• Uncover new design rules for developing high performance materials for OLED and other electronics-related applications.
Period of project implementation: 2019-01-02 - 2021-12-31
Project coordinator: Kaunas University of Technology
Project partners: University of Latvia, National University of Taiwan
