123rd General Meeting of the KCS

Type Symposium
Area Recent Trends in Organometallic Chemistry
Room No. Room 401+402
Time FRI 09:00-09:20
Code INOR2-1
Subject Ortho-Carbazole-Appended Triarylboron Compounds: From Color Tunable TADF Emitters to Time-Resolved Fluorescence Sensors
Authors Min Hyung Lee
Department of Chemistry, University of Ulsan, Korea
Abstract Triarylboron compounds have attracted great interest in the fields of optoelectronic applications, such as anion sensors and OLEDs, due to their high Lewis acidity and excellent photophysical properties. Recently, our group first demonstrated that ortho-donor-appended triarylboron compounds can function as highly efficient TADF (thermally activated delayed fluorescence) emitters in OLEDs due to twisted donor−acceptor structure and strong electron-accepting properties of triarylboron moiety. To generalize this concept and to further develop color-tunable TADF emitters, we have prepared a series of ortho-carbazole-appended triarylboron compounds, where the substituted carbazoyl unit acts as a donor (D) and substituted triarylboron as an acceptor (A), respectively. Various electron-donating and/or -accepting groups were employed in the donor and acceptor units of the reference CzoB compound, which allowed for full emission color tuning in the visible region. Furthermore, TADF properties of these compounds were successfully applied to the design of time-resolved turn-on fluorescence sensor for hydrogen peroxide (H2O2). Details of synthesis and properties of triarylboron compounds will be discussed.
E-mail lmh74@ulsan.ac.kr