Solid state polymerization reactions for passive and active guided-wave components

Mohamad Al-Sheikhly, William L. McLaughlin, A. Kovacs, L. Wojnarovits, Christos A. Christou, Aris Christou, David F. Lewis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A thin colorless radiochromic diacetylene monomer sensor coated on a transparent polyester base undergoes solid-state polymerization via free radical mechanisms when irradiated with ultraviolet 266 nm wavelength, x- and gamma rays, and high-energy electron beam irradiation. The radiation-induced polymerization reaction leads to the formation of 1, 4-trans additions as polyconjugations along the ladder-like polymer chains.As a result, the colorless, transparent films responds to ultraviolet and to ionizing radiation by turning deep-blue, with an absorption spectrum that exhibits two distinct absorptions. Pulse radiolysis and flash photolysis techniques were used to measure the kinetics of the polymerization propagation reactions. The pulsed-electron- induced propagation of polymerization has an observed first- order rate constant of the order of 103 s-1, followed by much slower blue-shift of the primary absorption band. The activation energy of the polymerization was found to be ≈ 50 kJ mol-1. The fast kinetics of the UV-induced polymerization is faster by about one order of magnitude. The film can be utilized for optoelectronics, remote sensing, and radiation dosimetry.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsRay T. Chen, Peter S. Guilfoyle
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages184-192
Number of pages9
ISBN (Print)0819424161
Publication statusPublished - Dec 1 1997
EventOptoelectronic Interconnects and Packaging IV - San Jose, CA, USA
Duration: Feb 12 1997Feb 14 1997

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3005
ISSN (Print)0277-786X

Other

OtherOptoelectronic Interconnects and Packaging IV
CitySan Jose, CA, USA
Period2/12/972/14/97

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Al-Sheikhly, M., McLaughlin, W. L., Kovacs, A., Wojnarovits, L., Christou, C. A., Christou, A., & Lewis, D. F. (1997). Solid state polymerization reactions for passive and active guided-wave components. In R. T. Chen, & P. S. Guilfoyle (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 184-192). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 3005). Society of Photo-Optical Instrumentation Engineers.