Synthesis and properties of a solution-processable truxene derivative for OLED devices.
A soluble truxene derivative (TR1) attached with triphenylamine at the peripheral position was designed and synthesized. The structure and purity of TR1 were carefully characterized by 1H NMR, UV/vis and photoluminescent spectroscopy, mass spectroscopy, and thermal analyses. It exhibited good solubility in common organic solvents and good film forming properties. The maximum absorption and emission peaks in THF solution were shown at 358 nm and 415 nm, respectively. Bright blue emission was observed in both solution and solid states under UV excitation. The fluorescent quantum efficiency was 0.46. The best luminous efficiency was found to be 3.65 cd/A with CIE coordinates of (0.163, 0.260) in electroluminescence devices.
Department of Advanced Materials, Hannam University, Daejeon 305-811, Korea.
Kyu Min
KM
Choi
Kye-Young
KY
Kim
Tae-Dong
TD
Kim
Rupasree Ragini
RR
Das
Byoung Ki
BK
Choi
Jong Jin
JJ
Park
Jong-Min
JM
Kim
Kwang-Sup
KS
Lee