Accession Number:

ADA617261

Title:

Grafting-Density Effects, Optoelectrical Properties and Nano-Patterning of Poly(para-Phenylene) Brushes

Descriptive Note:

Journal article

Corporate Author:

TENNESSEE UNIV KNOXVILLE

Report Date:

2013-01-01

Pagination or Media Count:

10.0

Abstract:

Well-defined conjugated polymers in confined geometries are challenging to synthesize and characterize, yet they are potentially useful in a broad range of organic optoelectronic devices such as transistors, light emitting diodes, solar cells, sensors, and nanocircuits. Herein we report a systematic study of optoelectrical properties, grafting density effects, and nanopatterning of a model, end-tethered conjugated polymer system. Specifically, polypara-phenylene PPP brushes of various grafting density are created in situ by aromatizing well-defined, end-tethered poly1,3- cyclohexadiene PCHD precursor brushes . This novel precursor brush approach provides a convenient way to make and systematically control the grafting density of high molecular weight conjugated polymer brushes that would otherwise be insoluble. This allows us to examine how grafting density impacts the effective conjugation length of the conjugated PPP brushes and to adapt the fabrication method to develop spatially patterned conjugated brush systems, which is important for practical applications of conjugated polymer brushes.

Subject Categories:

  • Polymer Chemistry
  • Electrooptical and Optoelectronic Devices
  • Atomic and Molecular Physics and Spectroscopy
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE