Title :
Multi-Block Liquid Crystalline Organic Semi-Conductors for Organic (opto)electronic applications
Author :
Iwan, A. ; Janeczek, H. ; Rannou, P.
Author_Institution :
Div. of Electrotechnol. & Mater. Sci., Electrotech. Inst., Wroclaw, Poland
Abstract :
Four Multi-Blocks Liquid Crystalline Organic SemiConductors (MBLCOSCs) were synthesized via a solvent-less one pot melt-condensation of 4,4´-(butane-1,4-diylbis(oxy))bis(butane-4,1-diyl) bis(4-aminobenzoate) with (tailored-made) π-conjugated building blocks bearing a terminal reactive aldehyde function. Their optoelectronic properties and thermotropic mesomorphic behavior were investigated by UV-Vis absorption and Photoluminescence (PL) spectroscopies, and by Differential Scanning Calorimetry (DSC) and Polarizing Optical Microscopy (POM), respectively. Finally, current-voltage (I-V) measurements were performed on Organic Light-Emitting Diodes (OLEDs) fabricated with a ITO/MBLCOSCs/Alq3/Al multi-layered architecture.
Keywords :
condensation; conducting polymers; differential scanning calorimetry; liquid crystals; organic light emitting diodes; organic semiconductors; photoluminescence; ultraviolet spectra; visible spectra; π-conjugated building blocks; 4,4´-(butane-1,4-diylbis(oxy))bis(butane-4,1-diyl) bis(4-aminobenzoate); OLED; UV-Vis absorption; current-voltage measurements; differential scanning calorimetry; melt condensation; multiblock liquid crystalline organic semiconductors; organic light emitting diodes; organic optoelectronic applications; photoluminescence; polarizing optical microscopy; terminal reactive aldehyde function; thermotropic mesomorphic behavior; Absorption; Calorimetry; Crystallization; Current measurement; Optical microscopy; Optical polarization; Organic light emitting diodes; Organic semiconductors; Photoluminescence; Spectroscopy;
Conference_Titel :
MIPRO, 2010 Proceedings of the 33rd International Convention
Conference_Location :
Opatija
Print_ISBN :
978-1-4244-7763-0
