| Abstract [eng] |
Organic semiconductors are a class of electroactive materials which is widely investigated and well promising. They can be used in variuos photoelectric devices such as solar cells, light emiting diodes, field transistors, copying machines. Due to their effective charge transportation a lot of attention is paid to materials containing 1,2,3,4-tetrahydroquinoline electron donating moiety. The aim of this work is to sythesize new organic 1-phenyl-1,2,3,4-tehrahydroquinoline based semiconductors. In the first part doing multistep synthesis two tetrahydroquinoline based hole transporting enamines were obtained. The structure was confirmed by NMR analysis. Optical, thermal and photoelectric properties of synthesized enamines were investigated. Both enamines are thermal stable, the values of the ionization potential (5.01 and 5.16 eV) are good enough for hole transport. Hole drift mobility reaches the order of 10-4- 10-3cm2V-1s-1 in strong electric fields. According to all of these properties, we can expect that both enamines can be used in photoelectronics. In the second part a bipolar compound, containing tetrahydroquinoline and perylene moieties was synthesized. As we expected, new synthesized material can transport both types of charges: holes and electrons. Interesting that icreasing the temperature, electron drift mobility also increases and reaches the order of 10-6cm2V-1s-1. According to optical, thermal and photoelectical properties, we can determine that this material is well promising semiconductor. Using quantum calculations, the structure of this compound was also determined. Due to structural properties, the material transforms into a gel in its solution forming H-type agregates. |
