Properties of ultrahigh-Tg chromophoric polyimides and polyureas as high-performance nonlinear optical materials: architecture-processing-temporal stability relationships

1995 ◽  
Author(s):  
Lifeng Geng ◽  
Jennifer F. Wang ◽  
Tobin J. Marks ◽  
Weiping Lin ◽  
Paul M. Lundquist ◽  
...  
Keyword(s):  
Optical Materials ◽  
High Performance ◽  
Nonlinear Optical ◽  
Temporal Stability ◽  
Nonlinear Optical Materials

Aliovalent-cation-substitution-induced structure transformation: a new path toward high-performance IR nonlinear optical materials

2021 ◽  
Author(s):  
Chang Liu ◽  
Shenghua Zhou ◽  
Yu Xiao ◽  
Chao Zhang ◽  
Hua Lin ◽  
...  
Keyword(s):  
Optical Materials ◽  
High Performance ◽  
Nonlinear Optical ◽  
Nonlinear Optical Materials ◽  
Cation Substitution ◽  
Structure Transformation ◽  
Induced Structure ◽  
Aliovalent Cation

Non-centrosymmetric (NCS) structure is the precondition and foundation for the development of high-performance nonlinear optical (NLO) crystals. In this reasearch, a quaternary NCS thioantimonate, K2Ag3Sb3S7, has been designed through an...

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

1995 ◽  
Vol 392 ◽  
Author(s):  
Jia-Fu Wang ◽  
Lifeng Geng ◽  
Weiping Lin ◽  
Tobin J. Marks ◽  
George K. Wong
Keyword(s):  
Optical Materials ◽  
High Performance ◽  
Nonlinear Optical ◽  
Second Order ◽  
Nonlinear Optical Materials ◽  
Materials Properties ◽  
Donor Acceptor ◽  
Test Current ◽  
Diallylbisphenol A ◽  
Aging In Air

AbstractThis 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.

High-performance organic second- and third-order nonlinear optical materials for ultrafast information processing

2020 ◽  
Vol 8 (43) ◽  
pp. 15009-15026
Author(s):  
Jieyun Wu ◽  
Zhong’an Li ◽  
Jingdong Luo ◽  
Alex K.-Y. Jen
Keyword(s):  
Information Processing ◽  
Optical Materials ◽  
High Performance ◽  
Nonlinear Optical ◽  
Recent Progress ◽  
Second Order ◽  
Nonlinear Optical Materials ◽  
Third Order ◽  
Ultrafast Information Processing ◽  
Review Reports

The review reports the recent progress in organic second-order and third-order nonlinear optical materials in the Jen group.

Ultra-High-Tg Chromophoric Polyimides and Polyureas as High-Performance Nonlinear Optical Materials

1995 ◽  
Vol 413 ◽  
Author(s):  
Lifeng Geng ◽  
Jiafu Wang ◽  
Tobin J. Marks ◽  
Weiping Lin ◽  
Haitian Zhou ◽  
...  
Keyword(s):  
Optical Materials ◽  
High Performance ◽  
Nonlinear Optical ◽  
Second Order ◽  
Nonlinear Optical Materials ◽  
Careful Attention ◽  
Nlo Materials ◽  
Nlo Chromophores ◽  
Diallylbisphenol A ◽  
Aging In Air

ABSTRACTThree approaches to the construction of high-Tg 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 320°C and partially resonant χ(2) responses as high as 1.0×10-7 esu (42 pm/V at 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 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 ( on aging in air at 100°C for periods of 1,000-4,000 h. The imidazole based materials exhibit only about 10% χ(2) decay on aging for 100 h at 200°C under N2.

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