A Novel Positive Type Photosensitive Polyimide Based on Soluble Block Copolyimide with Alicyclic Dianhydride

Jin, Xing Zhou; Ishii, Hiroyuki; Segawa, S.

doi:10.2494/photopolymer.18.313

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…In recent years, polyimides with high optical transparencies and low dielectric constants have been in demand for optoelectronic and microelectronic applications. Alicyclic and aliphatic polyimides (APIs) are candidates for applications in optoelectronics and interlayer dielectrics due to their higher transparency and low dielectric constants when compared to aromatic polyimides . These properties result from their low molecular density, low polarity, and low probability of undergoing inter‐ or intramolecular charge transfer .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of fully aliphatic polyimides from an aliphatic dianhydride with piperazine spacer for enhanced solubility, transparency, and low dielectric constant

Tapaswi

Choi

Jung

et al. 2014

J. Polym. Sci. Part A: Polym. Chem.

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A new series of fully aliphatic polyimide (API) based on a novel aliphatic dianhydride monomer-2,2 0 -(1,4-piperazinediyl)-disuccinic anhydride (PDA), in which two units of succinic anhydride have been connected by an aliphatic heterocyclic piperazine spacer that possesses aminomethylene (-NCH 2 ) moiety in the aliphatic/alicylic backbone capable of inducing charge transfer (CT) interactions in the polyimide network, was successfully synthesized. The APIs were soluble in common polar organic solvents. The polyimide films of PDA with alicyclic diamines were almost colorless. T 10 (temperature of 10% weight loss) of APIs were ranged from 299-418 C and T g of API3-API6 were in the temperature range of 170 to 237 C. The light-colored polyimide films of API3-API6 possessed good mechanical properties with tensile strength of 54-72 Mpa, tensile modulus of 1.6-2.3 Gpa and elongation at break of 4-9%. The polyimide films of API3-API6 were highly flexible and freestanding which is quite rare in fully APIs. The dielectric constant of one of the synthesized API (API4) was as low as 2.14.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of fully aliphatic polyimides from an aliphatic dianhydride with piperazine spacer for enhanced solubility, transparency, and low dielectric constant

Tapaswi

Choi

Jung

et al. 2014

J. Polym. Sci. Part A: Polym. Chem.

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show abstract

“…[70,79,91,102] Alicyclic PIs are suitable candidates for applications in optoelectronics and interlayer dielectrics due to their higher transparency and low dielectric constants when compared to aromatic PIs. [117][118][119][120][121][122] These properties originate from their relatively low molecular density, low polarity, and low probability of undergoing inter-or intra-molecular CT interaction. However, a serious problem occurs when aliphatic diamines, especially rigid cycloaliphatic diamine such as trans-1,4-cyclohexanediamine (t-CHDA) were used, that is, the formation of insoluble salt at the initial PAA formation stage, [79,91] This salt formation causes either termination or very poor degree of polymerization, leading to very low molecular weight, which is really a great obstacle for commercialization of CPI systems using aliphatic diamines.…”

Section: Nonaromatic Colorless Pismentioning

confidence: 99%

“…The most effective approach to synthesize colorless PIs is to use cycloaliphatic (nonaromatic) monomers either in diamines or tetracarboxylic dianhydrides (preferable) or both . Alicyclic PIs are suitable candidates for applications in optoelectronics and interlayer dielectrics due to their higher transparency and low dielectric constants when compared to aromatic PIs . These properties originate from their relatively low molecular density, low polarity, and low probability of undergoing inter‐ or intra‐molecular CT interaction.…”

Section: General Features On the Colorless And Transparent Polyimidementioning

confidence: 99%

Recent Trends on Transparent Colorless Polyimides with Balanced Thermal and Optical Properties: Design and Synthesis

Tapaswi

2019

Macro Chemistry & Physics

170

155

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Recently, colorless and transparent plastic substrates with high glass transition temperature and suitable thermo‐mechanical properties are in high demand in optoelectronic device industries, due to their various optical applications. Colorless polyimides (CPIs) exhibit both high thermo‐mechanical stability as well as high transparency that are suitable for optoelectronic applications. The most recent (2010–2018) developments on CPIs, in terms of design and synthesis of new monomers and their effects on the thermo‐optical properties of the obtained CPIs, are reviewed in this article.

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Advanced polyimide materials: Syntheses, physical properties and applications

Liaw

Wang

Huang

et al. 2012

Progress in Polymer Science

1,853

725

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A Novel Positive Type Photosensitive Polyimide Based on Soluble Block Copolyimide with Alicyclic Dianhydride

Cited by 3 publications

References 8 publications

Synthesis and characterization of fully aliphatic polyimides from an aliphatic dianhydride with piperazine spacer for enhanced solubility, transparency, and low dielectric constant

Synthesis and characterization of fully aliphatic polyimides from an aliphatic dianhydride with piperazine spacer for enhanced solubility, transparency, and low dielectric constant

Recent Trends on Transparent Colorless Polyimides with Balanced Thermal and Optical Properties: Design and Synthesis

Advanced polyimide materials: Syntheses, physical properties and applications

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