Fused-Molecular Systems for Organic Light Emitting Diodes

<p>Organic light emitting diodes (OLEDs) are electronic devices made by sandwitching organic light emissive materials between two electrodes. When voltage is applied across the two conductors, a bright light is generated. The color of the emitting light depends on the band gap of the semiconducting material. The work described here focuses on designing and synthesizing narrow band gap molecular systems derived from fused-arene derivatives for producing organic blue light emitting diodes. Three molecular systems derived from anthracene, pyrene, and carbazole, were designed and synthesized. Two molecular systems of anthracen-9-ylmethyl anthracene-9- carboxylate and pyren-1-ylmethyl 4-bromobenzoate were synthesized through Steglich esterification reaction and the third, pyren-1-ylmethyl 4-(9-hexyl-6-{4-[(pyren-1- ylmethoxy) carbonyl] phenyl}-9H-carbazol-3-yl) benzoate was synthesized by Grignard metathesis followed by Kumada coupling reaction. Structural characterizations were performed using 1H, 13C NMR and FTIR analysis. Photophysical properties of these systems were studied in chloroform (CHCl3) solution using UV-visible and Fluorescence spectroscopies. The absorption and fluorescence emission spectra revealed the potential applicability of these three systems as blue and blue-green emitters for OLEDs. The future work of this project will focus on utilizing these three molecular systems to fabricate OLED devices.</p>

Name thesis:degree_name

Master of Science

Discipline thesis:degree_discipline

Department of Chemistry

Year

2015

Author dc:creator

• Jami, Avinash

Contributors dc:contributor

• Dr. Hemali Rathnayake (Director), Dr. Edwin Stevens, and Dr. Bangbo Yan

• OLEDs
• blue light
• fused-arene
• Chemistry
• Physical Chemistry
• Physics

Repository record dc:identifier

https://digitalcommons.wku.edu/theses/1543

OAI identifier oai:identifier

oai:digitalcommons.wku.edu:theses-2546