Conjugated polymers for pure UV light emission: Poly(meta‐phenylenes)
Abstract
We report the synthesis of a 3‐ethylhexyloxy substituted poly(meta‐phenylene), EHO‐PMP that shows absorption and solid state photoluminescence exclusively in the UV region of the electromagnetic spectrum with an emission maximum of 345 nm. Computational analysis of model oligomers by DFT methods indicates that EHO‐PMP is a wide bandgap polymer with the HOMO being localized on a dimeric (biphenyl) unit and with the LUMO being more delocalized. The energy of the LUMO, however, suggests that inefficient electron injection would occur from currently available cathode materials in standard light‐emitting device architectures, and this was observed experimentally. The computational results, coupled with experimental observation, lead us to believe that efficient electroluminescence from organic polymer UV emitters requires advances in electron transport layers and cathode materials. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2011
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 01, 2011
- Source ID
- 10.1002/polb.22224
Entities
People
- Dinesh G. “dan” Patel
- Jiangeng Xue
- John R. Reynolds
- Kenneth R Graham
- Kirk Sullivan Schanze
- Richard T. Farley
- Sang‐hyun Eom
- So Hirata
- Yixing Yang
- Yu‐ya Ohnishi
Organizations
- American Chemical Society Petroleum Research Fund
- Federal Government of the United States
- National Science Foundation
- United States Army