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Synthesis of novel twisted carbazole-quinoxaline derivatives with 1,3,5-benzene core: bipolar molecules as hosts for phosphorescent OLEDs |
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| Authors: | M Ananth Reddy Anup ThomasG Mallesham B Sridhar |
| Institution: | a Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad 500 607, India b Organic Chemistry Division (II), Indian Institute of Chemical Technology, Hyderabad 500 607, India c Laboratory of X-Ray Crystallography, Indian Institute of Chemical Technology, Hyderabad 500 607, India |
| Abstract: | A series of carbazole/quinoxaline hybrids have been synthesized by classic Ullmann and Pd/Cu-catalyzed Sonogashira coupling reaction. Their photophysical, thermal, and electrochemical properties were investigated. The introduction of electron rich carbazole and electron deficient quinoxaline on to the 1,3,5-benzene center leads to a twisted structure with good glass forming property and imparts a bipolar character. The triplet energies in the range of 2.34-2.53 eV indicate them as potential host materials in phosphorescent OLEDs. |
| Keywords: | Carbazole Quinoxaline Amorphous material Bipolar nature PHOLEDs |
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