Poly(Phenylene vinylene) And Poly(Naphthalene vinylene) Derivatives for Use in Organic Light-Emitting Diodes (OLEDs)

Organic light-emitting diodes (OLEDs) have found application in displays and lighting. The focus of this dissertation is on the synthesis of unique poly(phenylene vinylene) (PPV) derivatives and similarly structured conjugated polymers as active layers in OLED devices. One element analyzed in this research was the effect of the substitution pattern of the phenylene units, whether para- or meta-linked. The resulting set of devices revealed that meta derivatives with alkoxy substitution on the meta-linked rings had improved performance over para-linked derivatives. The role of oxygen in the solubilizing sidechains of conjugated polymers was investigated. When oxygen is removed from these sidechains, the solubility and device performance are adversely affected. Incorporation of oxygen in the chain in a position further from the aromatic ring improves solubility, potentially improving device performance. An additional oxygen incorporated in the sidechain for a total of two ether moieties, further increases solubility, but impairs device performance due to poor film formation. Finally the combination of PPV with poly(naphthalene vinylene) (PNV) in the form of alternating copolymers showed improved OLED device performance over PNV homopolymers. The improved solubility of these copolymers allowed for the analysis of the effect of alky and alkoxy substitutents in PNV derivatives on electroluminescent characteristics.

Name thesis:degree_name

Doctor of Philosophy

Level thesis:degree_level

Doctoral

Discipline thesis:degree_discipline

Organic Chemistry

Grantor

University of Houston

Year dc:date.issued

2014

Author dc:creator

• Young, Crystal 1987-

Advisor dc:contributor.advisor

• Lee, T. Randall

Committee members dc:contributor.committeemember

• Cai, Chengzhi
• Cox, James R.
• Czernuszewicz, Roman S.
• Daugulis, Olafs

• Alkyl substitution
• Horner-Emmons polycondensation
• Light-emitting polymer
• Organic light-emitting diode
• Poly(naphthalene vinylene)
• Poly(phenylene vinylene)
• PPV

Statement dc:rights

• The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/10657/4745

OAI identifier oai:identifier

oai:uh-ir.tdl.org:10657/4745