Synthesis and Properties of Novel Fluorinated Polyamides Based on 2‐Trifluoromethyl‐4,4′‐Diaminodiphenylether

Yang, Chin‐Ping; Chen, Ruei‐Shin; Chen, Kuei-Hung; Ya-ping, Chen

doi:10.1002/jccs.200200131

Cited by 8 publications

(2 citation statements)

References 10 publications

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“…1B shows the FT-IR spectrum of amination-CuO in the wavenumber range of 450-4000 cm À 1 . The amino group showed a pair of N-H stretching bands in the region of 3300-3500 cm À 1 , indicating successful functionalization of amination-CuO (Yang et al, 2002). Fig.…”

Section: Resultsmentioning

confidence: 84%

A signal-off sandwich photoelectrochemical immunosensor using TiO2 coupled with CdS as the photoactive matrix and copper (II) ion as inhibitor

Liu

Gao

et al. 2015

Biosensors and Bioelectronics

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Section: Resultsmentioning

confidence: 84%

A signal-off sandwich photoelectrochemical immunosensor using TiO2 coupled with CdS as the photoactive matrix and copper (II) ion as inhibitor

Liu

Gao

et al. 2015

Biosensors and Bioelectronics

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“…thylformamide), m-cresol, and tetrahydrofuran at RT without the aid of inorga like LiCl or CaCl2. In addition PA-4, which contains a hexafluoroisopropylidene (bridge on its main chain, showed better solubility and is even soluble in aceton compared with the PAs derived from 4,4′-oxydianiline (ODA) and 2-trifluoromet diaminodiphenylether [23,42,43], the PAs prepared here exhibited improved so The solubility enhancement is ascribed not only to the bulky trifluoromethyl gr the polymer main chains but also to the irregular chain structure stemming from symmetrical monomer which prevents a close chain packing and reduces the inte among polymer chains.…”

Section: Polymer Propertiesmentioning

confidence: 99%

Highly Transparent Aromatic Polyamides from Unsymmetrical Diamine with Trifluoromethyl Groups

et al. 2022

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Soluble and transparent wholly aromatic polyamides (PAs) were synthesized from an unsymmetrical diamine monomer having trifluoromethyl (CF3) groups, 4-(4′-aminophenoxy)-3,5-bis(trifluoromethyl)aniline. The monomer was polymerized with several dicarboxylic acid monomers via the Yamazaki–Higashi polycondensation method. All of the synthesized polyamides have an amorphous morphology, and they are soluble in many polar organic solvents at room temperature. Flexible and transparent films of the polyamides were prepared by solution casting and these polymer films show good optical transparencies with cut-off wavelengths of 337–367 nm and transparencies of 88%–90% at 550 nm. In addition, all the polymers were thermally stable over 400 °C and exhibited glass transition temperatures (Tg) higher than 300 °C. Unsymmetrically inserted trifluoromethyl groups on polyamides improves the solubility as well as the transparency of the polymers while maintaining good thermal properties. They also showed low refractive indices around 1.5333~1.5833 at 633 nm owing to the existence of low polarizable trifluoromethyl groups.

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Fluorinated polyamides and poly(amide imide)s based on 1,4‐bis(4‐amino‐2‐trifluromethylphenoxy)benzene, aromatic dicarboxylic acids, and various monotrimellitimides and bistrimellitimides: Syntheses and properties

Yang

Chen

Woo

2004

J. Polym. Sci. A Polym. Chem.

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A CF3‐containing diamine, 1,4‐bis(4‐amino‐2‐trifluromethylphenoxy) benzene (I), was prepared from hydroquinone and 2‐chloro‐5‐nitrobenzotrifluoride. Imide‐containing diacids (Va–h and VIa,b) were prepared through the condensation reaction of amino acids, aromatic diamines, and trimellitic anhydride. Then, a series of soluble fluorinated polyamides (VIIa–h) and poly(amide imide)s (VIIIa–h and Xa,b) were synthesized from I with various aromatic diacids (IIa–h) and imide‐containing diacids (Va–h and VIa,b) via direct polycondensation with triphenyl phosphate and pyridine. The polyamides and poly(amide imide)s had inherent viscosities of 1.00–1.70 and 0.79–1.34 dL/g, respectively. All the synthesized polymers showed excellent solubility in amide‐type solvents such as N‐methyl‐2‐pyrrolidinone, N,N‐dimethylacetamide, and N‐dimethylformamide and afforded transparent and tough films via solvent casting. Polymer films of VIIa–h, VIIIa–h, and Xa,b had tensile strengths of 91–113 MPa, elongations to break of 8–40%, and initial moduli of 2.1–2.8 GPa. The glass‐transition temperatures of the polyamides and poly(amide imide)s were 254–276 and 255–292 °C, respectively, and the imide‐containing poly(amide imide)s had better thermal stability than the polyamides. The polyamides showed higher transparency and were much lighter in color than the poly(amide imide)s, and their cutoff wave numbers were below 400 nm. In comparison with isomeric IXc–h, poly(amide imide)s VIIIc–h exhibited less coloring and showed lower yellowness indices. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 3116–3129, 2004

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Synthesis and Properties of Novel Fluorinated Polyamides Based on 2‐Trifluoromethyl‐4,4′‐Diaminodiphenylether

Cited by 8 publications

References 10 publications

A signal-off sandwich photoelectrochemical immunosensor using TiO2 coupled with CdS as the photoactive matrix and copper (II) ion as inhibitor

A signal-off sandwich photoelectrochemical immunosensor using TiO2 coupled with CdS as the photoactive matrix and copper (II) ion as inhibitor

Highly Transparent Aromatic Polyamides from Unsymmetrical Diamine with Trifluoromethyl Groups

Fluorinated polyamides and poly(amide imide)s based on 1,4‐bis(4‐amino‐2‐trifluromethylphenoxy)benzene, aromatic dicarboxylic acids, and various monotrimellitimides and bistrimellitimides: Syntheses and properties

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