Synthesis and properties of highly organosoluble and low dielectric constant polyimides containing non-polar bulky triphenyl methane moiety

Chen, Wenxin; Zhou, Zhuxin; Yang, Tingting; Bei, Runxin; Zhang, Yi; Liu, Siwei; Chi, Zhenguo; Chen, Xudong; Xu, Jiarui

doi:10.1016/j.reactfunctpolym.2016.04.011

Cited by 96 publications

(61 citation statements)

References 19 publications

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“…1 H, 13 C-NMR, and FT-IR analyses showed that the main decomposition products obtained from the poly(BBMS) were HBr and methacrylic acid to 260°C causing a decrease in the dielectric constants. The glass transition temperature and number average molecular weight of poly(BBMS) were measured as 60°C and 18,200 g/mol, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Some important signals characterizing the structure of 4-hydroxymethyl styrene synthesized are summarized as follows: 1 …”

Section: Synthesis Of 4-hydroxymethyl Styrenementioning

confidence: 99%

“…[1,2] The dielectric constant and dissipation factor among dielectric properties are crucial quantities required in the design of devices, which are developed and produced for various aims. The organic-based polymers have lower generally dielectric constants due to their lower density and individual bond polarizability.…”

Section: Introductionmentioning

confidence: 99%

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Characterization, thermal behavior, and electrical measurements of poly[4‐(2‐bromoisobutyroyl methyl)styrene]

Biryan

Demirelli

2017

Adv Polym Technol

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The 4-(2-bromoisobutyroyl methyl)styrene [BBMS] monomer was synthesized. The homopolymer of BBMS was prepared by free radical polymerization method. The decomposition behavior of P(BBMS) was thermally investigated by thermogravimetric analysis (TGA). For thermal decomposition kinetics of poly(BBMS), Flynn-Wall-Ozawa method was applied to thermogravimetry curves. The first step, which is one of the two decomposition stages, is comprehensively related to elimination of hydrogen bromide and the other step is related to a multi-step process. The activation energy (E a ) of thermal decomposition of the first step and 50% weight loss is 148.5 and 190.7 kJ/mol, respectively. The results showed that the side group elimination without chain breaking comprehensively proceeded at lower temperature, and at progressive temperatures subsequently the specific chain scission did so. Degradation of poly(BBMS) did not lead to depolymerization. 1 H, 13 C-NMR, and FT-IR analyses showed that the decomposition products during degradation of poly(BBMS) to 260°C were comprehensively HBr and methacrylic acid. Electrically conducting graphene-based poly(BBMS) composites were prepared. The DC and AC electrical measurements of graphene-based poly(BBMS) composites were carried out. The AC dielectric measurements of poly(BBMS) were investigated up to 70°C between 100 Hz and 20 kHz depending on the alternating current conductivities. The dipolar functional groups (C-O, C=O, and Br) of the BBMS segment possesses significantly affect the dielectric constant. Also, the activation energy profile of different graphene/ poly(BBMS) composites were revealed by measuring DC conductivity of individual composite material. K E Y W O R D S characterization, electrical properties, poly(BBMS), thermal behavior | 1995 BIRYAN YANnd ndDEBIDEEB F I G U R E 1 (a) 1 H-NMR and (b) 13 C NMR spectra of monomer(BBMS) [Colour figure can be viewed at wileyonlinelibrary. com] How to cite this article: Biryan F, Demirelli K. Characterization, thermal behavior, and electrical measurements of poly[4-(2-bromoisobutyroyl methyl) styrene].

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Section: Discussionmentioning

confidence: 99%

“…Some important signals characterizing the structure of 4-hydroxymethyl styrene synthesized are summarized as follows: 1 …”

Section: Synthesis Of 4-hydroxymethyl Styrenementioning

confidence: 99%

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Characterization, thermal behavior, and electrical measurements of poly[4‐(2‐bromoisobutyroyl methyl)styrene]

Biryan

Demirelli

2017

Adv Polym Technol

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“…Two new pendant triphenylmethane‐containing diamine monomers, 5 ′ ‐trityl‐[1.1 ′ :3′,1 ″ ‐terphenyl]‐4,4 ′ ‐diamine (TriPMPDA) and 5 ′ ‐trityl‐[1.1 ′ :3 ′ ,1 ″ ‐terphenyl]‐3,3 ′ ‐diamine (TriPMMDA) were synthesized by the Suzuki reaction of 2BrTBz with 4‐aminophenylboronic acid and 3‐aminophenylboronic acid monohydrate, respectively ( Scheme ) . The PI film of 6FDA‐TriPMMDA was lighter in color (λ 0 = 343 nm) than 6FDA‐TriPMPDA (λ 0 = 372 nm).…”

Section: Recent Design Approaches To Prepare Cpismentioning

confidence: 99%

Section: Recent Design Approaches To Prepare Cpismentioning

confidence: 99%

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

Tapaswi

2019

Macro Chemistry & Physics

164

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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Precise Patterning of Large‐Scale TFT Arrays Based on Solution‐Processed Oxide Semiconductors: A Comparative Study of Additive and Subtractive Approaches

Zheng

et al. 2017

Adv Materials Inter

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Precise patterning of solution‐processed oxide semiconductors is critical for cost‐effective, large‐scale, and high throughput fabrication of circuits and display application. In this paper, demonstration and comparison are made using the additive and subtractive patterning strategies to precisely fabricate wafer‐scale thin film transistor arrays (1600 devices), which are based on high‐quality solution‐processed indium zinc oxide (IZO) and indium gallium zinc oxide (IGZO). The IZO and IGZO TFTs exhibit field‐effect mobility up to 8.0 and 5.2 cm2 V−1 s−1 when using the additive method, whereas the highest mobility of 24.2 and 13.7 cm2 V−1 s−1 for IZO and IGZO TFTs is achieved when using the subtractive method. The X‐ray photoelectronic spectroscopy studies and quantitative 2D device simulations together reveal that good device performance is attributed to moderate shallow donor‐like states (providing electrons) from oxygen vacancy and few accepter‐like states (trapping electrons) resulted from the dense structural framework of MO bonds. After examining the uniformity and reliability of the devices, the solution‐patterned inverters are demonstrated using negative‐channel metal oxide semiconductors, which show full swing output transfer characteristics and thus provide a promising method for solution‐based fabrications of circuits.

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Synthesis and properties of highly organosoluble and low dielectric constant polyimides containing non-polar bulky triphenyl methane moiety

Cited by 96 publications

References 19 publications

Characterization, thermal behavior, and electrical measurements of poly[4‐(2‐bromoisobutyroyl methyl)styrene]

Characterization, thermal behavior, and electrical measurements of poly[4‐(2‐bromoisobutyroyl methyl)styrene]

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

Precise Patterning of Large‐Scale TFT Arrays Based on Solution‐Processed Oxide Semiconductors: A Comparative Study of Additive and Subtractive Approaches

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