Monohydroxy-Hydrazone-Functionalized Thermally Crosslinked Polymers for Nonlinear Optics

Rajendra K. Singh, James O. Stoffer*, Tony D. Flaim, David B. Hall, John M. Torkelson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The synthesis and properties of six hydrazone-functionalized crosslinked polymers possessing stable nonlinear optics (NLO) properties are presented. First, a series of six hydroxy-functionalized, NLO-active hydrazone chromophores were synthesized. These chromophores were then grafted via its hydroxy functionality on an epoxy polymer to obtain the six NLO-active soluble prepolymers. The grafting reaction yielded multiple secondary hydroxyl sites, which were used for further crosslinking by formulation of the prepolymer with a blocked polyisocyanate crosslinker. This formulation was spin-coated on glass slides to form 2-2.5 μ thick defect-free transparent films. The films were corona-poled above their glass-transition temperatures to align the chromophores in a noncentrosymmetric fashion and were simultaneously cured. The thermal characteristics of the second-order nonlinearity of the six polymers were compared to illustrate the key structure-property relationships underlying the performance of the films in terms of NLO activity and thermal stability.

Original languageEnglish (US)
Pages (from-to)770-781
Number of pages12
JournalJournal of Applied Polymer Science
Volume92
Issue number2
DOIs
StatePublished - Apr 15 2004

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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