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

Mohamad Al-Sheikhly, William L. McLaughlin, A. Kovács, L. Wojnárovits, 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
Volume3005
ISBN (Print)0819424161
Publication statusPublished - 1997
EventOptoelectronic Interconnects and Packaging IV - San Jose, CA, USA
Duration: Feb 12 1997Feb 14 1997

Other

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

Fingerprint

Guided electromagnetic wave propagation
polymerization
Polymerization
solid state
Absorption spectra
absorption spectra
Radiolysis
Kinetics
propagation
Ionizing radiation
Photolysis
Ladders
polyesters
kinetics
radiation
radiolysis
Free radicals
blue shift
ladders
ionizing radiation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Al-Sheikhly, M., McLaughlin, W. L., Kovács, A., Wojnárovits, 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 (Vol. 3005, pp. 184-192). Society of Photo-Optical Instrumentation Engineers.

Solid state polymerization reactions for passive and active guided-wave components. / Al-Sheikhly, Mohamad; McLaughlin, William L.; Kovács, A.; Wojnárovits, L.; Christou, Christos A.; Christou, Aris; Lewis, David F.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Ray T. Chen; Peter S. Guilfoyle. Vol. 3005 Society of Photo-Optical Instrumentation Engineers, 1997. p. 184-192.

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

Al-Sheikhly, M, McLaughlin, WL, Kovács, A, Wojnárovits, L, Christou, CA, Christou, A & Lewis, DF 1997, Solid state polymerization reactions for passive and active guided-wave components. in RT Chen & PS Guilfoyle (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 3005, Society of Photo-Optical Instrumentation Engineers, pp. 184-192, Optoelectronic Interconnects and Packaging IV, San Jose, CA, USA, 2/12/97.
Al-Sheikhly M, McLaughlin WL, Kovács A, Wojnárovits L, Christou CA, Christou A et al. Solid state polymerization reactions for passive and active guided-wave components. In Chen RT, Guilfoyle PS, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3005. Society of Photo-Optical Instrumentation Engineers. 1997. p. 184-192
Al-Sheikhly, Mohamad ; McLaughlin, William L. ; Kovács, A. ; Wojnárovits, L. ; Christou, Christos A. ; Christou, Aris ; Lewis, David F. / Solid state polymerization reactions for passive and active guided-wave components. Proceedings of SPIE - The International Society for Optical Engineering. editor / Ray T. Chen ; Peter S. Guilfoyle. Vol. 3005 Society of Photo-Optical Instrumentation Engineers, 1997. pp. 184-192
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N2 - 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.

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