Properties of ultrahigh-Tg chromophoric polyimides and polyureas as high-performance nonlinear optical materials

architecture-processing-temporal stability relationships

Lifeng Geng, Jia Fu Wang, Tobin J Marks, Weiping Lin, Paul M. Lundquist, George K. Wong

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

2 Citations (Scopus)

Abstract

Three complementary approaches to the construction of electric field polable high-Tg (glass transition temperature) polyimides and polyureas as second-order NLO materials are discussed. In the first approach, copolymerization of bismaleimides with o,o′- diallylbisphenol A followed by functionalization with high-β NLO chromophores using a Mitsunobu procedure yields, after poling and curing, a series of heavily crosslinked chromophoric polyimides with Tg values as high as approximately 260°C and χ (2) responses as high as 1.0 × 10 -7 esu (42 pm/V at λ o = 1064 nm, 1.17 eV). In the second two approaches, copolymerization of the chromophore 4,5-bis(4′aminophenyl)-2-(4'-nitrophenyl)imidazole with bismaleimides or diisocyanates yields polyimides and polyureas with Tg values as high as 292°C and partially resonant χ (2) values as high as 0.62 × 10 -7 esu (25 pm/V at λ o = 1064 nm). It is found that careful attention to the details of curing and crosslinking during poling results in NLO-active matrices exhibiting negligible decay in χ (2) on aging in air at 100°C for periods of 1000 - 4000 h. The imidazole- based materials exhibit only approximately 10% χ (2) decay on aging for 100 h at 200°C under N 2.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages96-105
Number of pages10
Volume2528
Publication statusPublished - 1995
EventOptical and Photonic Applications of Electroactive and Conducting Polymers - San Diego, CA, USA
Duration: Jul 12 1995Jul 13 1995

Other

OtherOptical and Photonic Applications of Electroactive and Conducting Polymers
CitySan Diego, CA, USA
Period7/12/957/13/95

Fingerprint

Optical materials
optical materials
bismaleimide
polyimides
Polyimides
copolymerization
Chromophores
curing
imidazoles
Copolymerization
chromophores
Curing
Processing
Aging of materials
diisocyanates
decay
crosslinking
Crosslinking
glass transition temperature
Electric fields

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Geng, L., Wang, J. F., Marks, T. J., Lin, W., Lundquist, P. M., & Wong, G. K. (1995). Properties of ultrahigh-Tg chromophoric polyimides and polyureas as high-performance nonlinear optical materials: architecture-processing-temporal stability relationships. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2528, pp. 96-105)

Properties of ultrahigh-Tg chromophoric polyimides and polyureas as high-performance nonlinear optical materials : architecture-processing-temporal stability relationships. / Geng, Lifeng; Wang, Jia Fu; Marks, Tobin J; Lin, Weiping; Lundquist, Paul M.; Wong, George K.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2528 1995. p. 96-105.

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

Geng, L, Wang, JF, Marks, TJ, Lin, W, Lundquist, PM & Wong, GK 1995, Properties of ultrahigh-Tg chromophoric polyimides and polyureas as high-performance nonlinear optical materials: architecture-processing-temporal stability relationships. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 2528, pp. 96-105, Optical and Photonic Applications of Electroactive and Conducting Polymers, San Diego, CA, USA, 7/12/95.
Geng L, Wang JF, Marks TJ, Lin W, Lundquist PM, Wong GK. Properties of ultrahigh-Tg chromophoric polyimides and polyureas as high-performance nonlinear optical materials: architecture-processing-temporal stability relationships. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2528. 1995. p. 96-105
Geng, Lifeng ; Wang, Jia Fu ; Marks, Tobin J ; Lin, Weiping ; Lundquist, Paul M. ; Wong, George K. / Properties of ultrahigh-Tg chromophoric polyimides and polyureas as high-performance nonlinear optical materials : architecture-processing-temporal stability relationships. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2528 1995. pp. 96-105
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abstract = "Three complementary approaches to the construction of electric field polable high-Tg (glass transition temperature) polyimides and polyureas as second-order NLO materials are discussed. In the first approach, copolymerization of bismaleimides with o,o′- diallylbisphenol A followed by functionalization with high-β NLO chromophores using a Mitsunobu procedure yields, after poling and curing, a series of heavily crosslinked chromophoric polyimides with Tg values as high as approximately 260°C and χ (2) responses as high as 1.0 × 10 -7 esu (42 pm/V at λ o = 1064 nm, 1.17 eV). In the second two approaches, copolymerization of the chromophore 4,5-bis(4′aminophenyl)-2-(4'-nitrophenyl)imidazole with bismaleimides or diisocyanates yields polyimides and polyureas with Tg values as high as 292°C and partially resonant χ (2) values as high as 0.62 × 10 -7 esu (25 pm/V at λ o = 1064 nm). It is found that careful attention to the details of curing and crosslinking during poling results in NLO-active matrices exhibiting negligible decay in χ (2) on aging in air at 100°C for periods of 1000 - 4000 h. The imidazole- based materials exhibit only approximately 10{\%} χ (2) decay on aging for 100 h at 200°C under N 2.",
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