Electroactive and Photoactive Nanostructured Materials from Self-Organized Rod-Coil Copolymers: Synthesis and Electroluminescent Devices
Abstract
Electroluminescent ternary and binary rod-coil copolymer systems have been synthesized, characterized, and used to explore the effects of solid state supramolecular structure and morphology on the mechanism and quantum efficiency of electroluminescence. Enhanced electroluminescence due to efficient electronic energy transfer was observed in ternary rod-coil-rod copolymer systems containing two rodlike segments with different excitation energies, compared to the corresponding binary copolymers. Binary rod-coil copolymers which incorporate, into the rodlike segments, moieties that exhibit excited state intramolecular proton transfer were found to be electroluminescent via a novel mechanism, electrically generated intramolecular proton transfer (EGIPT). The inherent population inversion in the EGIPT process together with the observed stimulated emission imply the feasibility of electrically induced lasing in this class of materials. EGIPT was found to occur in only rod-coil copolymers with low rod-to-coil molar ratios, suggesting the profound effect of supramolecular structure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 16, 1998
- Accession Number
- ADA356300
Entities
People
- Richard M. Tarkka
- Samson A. Jenekhe
- X. L. Chen
Organizations
- University of Rochester