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 language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Pages | 96-105 |
| Number of pages | 10 |
| Volume | 2528 |
| Publication status | Published - 1995 |
| Event | Optical and Photonic Applications of Electroactive and Conducting Polymers - San Diego, CA, USA Duration: Jul 12 1995 → Jul 13 1995 |
Other
| Other | Optical and Photonic Applications of Electroactive and Conducting Polymers |
|---|---|
| City | San Diego, CA, USA |
| Period | 7/12/95 → 7/13/95 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
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 proceeding › Conference contribution
}
TY - GEN
T1 - Properties of ultrahigh-Tg chromophoric polyimides and polyureas as high-performance nonlinear optical materials
T2 - architecture-processing-temporal stability relationships
AU - Geng, Lifeng
AU - Wang, Jia Fu
AU - Marks, Tobin J
AU - Lin, Weiping
AU - Lundquist, Paul M.
AU - Wong, George K.
PY - 1995
Y1 - 1995
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0029531808&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029531808&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0029531808
SN - 0819418870
SN - 9780819418876
VL - 2528
SP - 96
EP - 105
BT - Proceedings of SPIE - The International Society for Optical Engineering
ER -