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Proceedings Paper

Novel linear and ladder polymers from tetraynes for nonlinear optics
Author(s): Shuji Okada; Hiro Matsuda; Atsushi Masaki; Hachiro Nakanishi; Kikuko Hayamizu
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Paper Abstract

The tetrayne monomer with urethane groups in substituents, i.e., hexadeca-5, 7, 9, 11-tetrayn- 1, 16-diyl bis(N-(butoxycarbonyl)methyl)carbamate, was synthesized so as to check the generality of the polymerization scheme observed in a dialkyltetrayne. It was confirmed that the polymerization behavior of this urethane monomer is just the same as the dialkyltetrayne: Namely, the monomer was polymerized by (gamma) -ray irradiation to give a linear polymer of the polydiacetylene with diacetylenic substituents (polymer I), and the following thermal polymerization of diacetylenic moieties in side chains estimated to give a ladder polymer of the di(polydiacetylene) (polymer II) in which two polydiacetylene backbones are conjugated. Though the third-order nonlinear optical susceptibilities of the polymer I were evaluated to be the same order of magnitude as those of the polydiacetylenes with aromatic substituents directly bound to the main chain, no detectable third harmonic generation was observed for the polymer II. This may be due to the disappearance of the excitonic absorption in polymer II, caused by deterioration of the crystallinity and/or instabilization of excitons.

Paper Details

Date Published: 1 December 1991
PDF: 10 pages
Proc. SPIE 1560, Nonlinear Optical Properties of Organic Materials IV, (1 December 1991); doi: 10.1117/12.50702
Show Author Affiliations
Shuji Okada, Research Institute for Polymers and Textiles (Japan)
Hiro Matsuda, Research Institute for Polymers and Textiles (Japan)
Atsushi Masaki, Research Institute for Polymers and Textiles (Japan)
Hachiro Nakanishi, Research Institute for Polymers and Textiles (Japan)
Kikuko Hayamizu, National Chemical Lab. for Industry (Japan)

Published in SPIE Proceedings Vol. 1560:
Nonlinear Optical Properties of Organic Materials IV
Kenneth D. Singer, Editor(s)

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