| Abstract [eng] |
Organic electroluminescent materials have many advantages when compared with their inorganic counterparts and, therefore, they have a wide range of potential applications in communications, information display, illumination, and so on. Chromophores containing carbazolyl moieties are synthesized using rigid and flat structures of aromatic linkage for connecting the rings of carbazole in low-molecular-weight hosts. Compounds are prepared by changing the connection positions of substitution and are widely used as effective hosts for phosphorescent organic light emitting diodes. Triphenylamine is also widely used in the synthesis of various types of hosts. An efficient triphenylamine conjugated π electron system exhibits a high triplet energy (3.04 eV) and a high HOMO level (~ 5.3 eV). New carbazole-based derivatives containing different electronically isolated fragments in their structures were synthesized and characterized in this dissertation. These compounds were effective host materials for organic light-emitting diodes. This was confirmed by the use of these compounds in effective green and blue phosphorescent light-emitting diodes. Also, carbazole and triphenylamine compounds containing 1-phenylphenanthro[9,10-d]imidazole fragments were synthesized and characterized. It was confirmed that these compounds are effective hosts for red electrophosphorescenct organic light-emitting diodes. |
