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Molecule-Based Approaches to High-Performance Second-Order Polymeric Nonlinear Optical Materials. Properties of Ultra-high-Tg Chromophoric Polyimides and Polyureas.

Published online by Cambridge University Press:  21 February 2011

Jia-Fu Wang ,
Lifeng Geng ,
Weiping Lin ,
Tobin J. Marks  and
George K. Wong
Jia-Fu Wang
Affiliation:
The Materials Research Center, Northwestern University, Evanston, Illinois 60208-3113 (USA)
Lifeng Geng
Affiliation:
The Materials Research Center, Northwestern University, Evanston, Illinois 60208-3113 (USA)
Weiping Lin
Affiliation:
Departments of Chemistry, Physics and Astronomy
Tobin J. Marks
Affiliation:
The Materials Research Center, Northwestern University, Evanston, Illinois 60208-3113 (USA)
George K. Wong
Affiliation:
Departments of Chemistry, Physics and Astronomy
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Abstract

This contribution describes the synthesis and properties of three classes of model NLO chromophore-functionalized high-Tg polymers which test current ideas about architecture-Tg- χ(2) performance relationships. Condensation of bismaleimides with diallylamino-functionalized donor-acceptor chromophores yields polable matrices with Tg values as high as 325°C and χ(2) responses as high as 0.7 × 10-7 esu (27 pm/V; λohigh as 0.7 × 10-7 esu (27 pm/V; λo = 1064 nm; 1.17 eV). Likewise, = 1064 nm; 1.17 eV). Likewise, condensation of o,o'-diallylbisphenol A with bismaleimides followed by chromophore functionalization yields an analogous series of polyimides with Tg values as high as 260°C and χ(2) response as high as 1.0 × 10-7 esu (42 pm/V at λo = 1064 nm). Polymerization of a bis(4-aminophenyl)lophine chromophore with bismaleimides or diisocyanates yields polymers with Tg values as high as 350°C and χ(2) = 0.62 × 10-7 esu (25 pm/V at λo = 1064 nm). All members of the above series exhibit minor to negligible decay in χ(2) response on aging in air at 100°C for 1000 h. The lophine-based material exhibits only ∼10% χ(2) decay on aging for 100 h at 200 °C under N2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 392: Symposium U – Thin Films for Integrated Optics Applications , 1995 , 85
Copyright
Copyright © Materials Research Society 1995

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