Poly(amideimide)s containing pendant pentadecyl chains: Synthesis and characterization

More, Arvind S.; Patil, Anandrao S.; Wadgaonkar, Prakash P.

doi:10.1016/j.polymdegradstab.2010.01.030

Cited by 27 publications

(26 citation statements)

References 24 publications

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“…4‐[4′‐(Hydrazinocarbonyl) phenoxy]‐2‐pentadecylbenzohydrazide (HPPB) was synthesized from cashewnut shell liquid (CNSL) using a procedure previously described 21–23. Terephthalic acid chloride (TPC) and isophthalic acid chloride (IPC) were synthesized from terephthalic acid and isophthalic acid (Aldrich, USA), respectively, using excess thionyl chloride in the presence of N , N ‐dimethylformamide (DMF) as a catalyst.…”

Section: Experimental Partmentioning

confidence: 99%

“…Sodium hydroxide, sodium chloride, sodium bicarbonate, and sodium sulfate (Merck, India and E‐Merck, Germany) were used as received. The solvents were of reagent grade quality and were purified prior to use according to previously reported procedures 21–23. Poly(1,3,4‐oxadiazole)s were synthesized according to the method reported in the literature 21–23.…”

Section: Experimental Partmentioning

confidence: 99%

“…The solvents were of reagent grade quality and were purified prior to use according to previously reported procedures 21–23. Poly(1,3,4‐oxadiazole)s were synthesized according to the method reported in the literature 21–23. The oxadiazole units were connected in the para‐ and meta‐ positions of the aromatic linkage in the main chain of the PODs in the POD‐1 and POD‐2, respectively, as shown in Scheme .…”

Section: Experimental Partmentioning

confidence: 99%

“…This is possibly attributed to the fact that typical aromatic PODs are difficult to process due to their infusible and insoluble nature as well as their brittleness. Many efforts have been made to improve the processability by incorporating flexible linkages in the polymer backbone or by the introduction of bulky pendant groups on the aromatic rings 21–23. Herein, we report electrochemical switching of fluorescence of alkyl‐substituted PODs, in which oxadiazole units are connected in the para‐ (POD‐1) or, meta‐ position (POD‐2) of the aromatic linkage in the main chain of the PODs.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Electrochemical Fluorescence Switching from a Patternable Poly(1,3,4‐oxadiazole) Thin Film

Seo

Kim

You

et al. 2011

Macromol. Rapid Commun.

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A highly soluble poly(1,3,4-oxadiazole) (POD) substituted with long alkyl chains was examined for electrochemical fluorescence switching. The high solubility of the polymers enabled a simple fabrication of an electrochemical cell, which showed reversible fluorescence switching between dark (n-doping) and bright (neutral) states with a maximum on/off ratio of 2.5 and a cyclability longer than 1000 cycles. Photochemical cleavage of the oxadiazole in POD allowed photo-patterning of the POD film upon exposure to UV source. The patterned POD films displayed patterned image reversibly under a step potential of +1.8/-1.8 V.

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Section: Experimental Partmentioning

confidence: 99%

Section: Experimental Partmentioning

confidence: 99%

Section: Experimental Partmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrochemical Fluorescence Switching from a Patternable Poly(1,3,4‐oxadiazole) Thin Film

Seo

Kim

You

et al. 2011

Macromol. Rapid Commun.

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“…Copolycondensation is one of the possible structural modifications of polymer properties. For that reason, many copolyimides have been prepared [9][10][11]. Modification of the properties of PIs by incorporation of hydrogen bonded amide groups has been attracting immense interest from researchers and PAIs have been investigated widely [12,13].…”

Section: Introductionmentioning

confidence: 99%

Novel heat resistant nanostructure poly(amide–imide)s containing new TMA-based diacid via conventional polycondensation reaction in an ionic green medium: synthesis, morphology, and thermal properties

Mallakpour

Zeraatpisheh

2012

Designed Monomers and Polymers

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The 4,4′-Methylenebis(3-chloro-2,6-diethylaniline) has been reacted with two moles of trimellitic anhydride in refluxing N,N′-dimethylformamide to obtain 4,4′-Methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) for the first time. A series of novel poly(amide-imide)s (PAIs) was synthesized by the direct polycondensation of the synthesized diimidediacid with various commercial diamines. The direct polyamidation was performed under conventional heating reaction using tetra-n-butylammonium bromide and triphenyl phosphite as a condensing agent. The PAIs were obtained in good yields and moderate inherent viscosity up to 0.48 dL/g. Although the polymers were not soluble in low polar solvents tested, they were thoroughly dissolved in high polar solvents and even in a moderate polar solvent such as pyridine. The crystallinity of the prepared PAIs was measured by XRD scans. No remarkable crystal diffraction was detected for the polymers obtained, and they showed almost an amorphous diffraction patterns. The thermal behavior of the polymers was evaluated by thermogravimetric analysis (TGA) technique. This study showed obviously one-stage decomposition at elevated temperatures. On the basis of TGA data, such polymers are thermally stable and can be classified as self-extinguishing polymers. The structural features of these polymers were verified by elemental analysis, fourier transform infrared spectroscopy, and 1 H-NMR spectroscopies. The field emission scanning electron microscopy (FE-SEM) micrographs showed the obtained PAIs have nanostructure morphology. The effect of ultrasonic irradiation on the polymer morphology was studied. The FE-SEM micrographs illustrated that the morphology of macromolecules after ultrasonication became more homogenous than it is before ultrasonic radiation.

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Synthesis and characterization of organo‐soluble poly(ether ether ketone)s and poly(ether ether ketone ketone)s containing pendant pentadecyl chains

Pasale

Honkhambe

et al. 2011

J of Applied Polymer Sci

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Poly(ether ether ketone)s and poly(ether ether ketone ketone)s containing pendant pentadecyl chains were synthesized by polycondensation of each of the two bisphenol monomers viz, 1,1,1-[bis(4-hydroxyphenyl)-4 0 -pentadecylphenyl]ethane and 1,1-bis(4-hydroxyphenyl)-3-pentadecyl cyclohexane with activated aromatic dihalides namely, 4,4 0 -difluorobenzophenone, and 1,3-bis(4-fluorobenzoyl)benzene in a solvent mixture of N,Ndimethylacetamide and toluene, in the presence of anhydrous potassium carbonate. Polymers were isolated as white fibrous materials with inherent viscosities and number average molecular weights in the range 0.70-1.27 dL g À1 and 76,620-1,36,720, respectively. Poly(ether ether ketone)s and poly(ether ether ketone ketone)s were found to be soluble at room temperature in organic solvents such as chloroform, dichloromethane, tetrahydrofuran, and pyridine and could be cast into tough, transparent, and flexible films from their solutions in chloroform. Wide angle X-ray diffraction patterns exhibited a broad halo at around 2y ¼ $ 19indicating that the polymers containing pentadecyl chains were amorphous in nature. In the smallangle region, diffuse reflections of a typically layered structures resulting from the packing of pentadecyl side chains were observed. The temperature at 10% weight loss, obtained from TG curves, for poly(ether ether ketone)s and poly(ether ether ketone ketone)s were in the range 416-459 C, indicating their good thermal stability. A substantial drop in glass transition temperatures (68-78 C) was observed for poly(ether ether ketone)s and poly(ether ether ketone ketone)s due to ''internal plasticization'' effect of flexible pendant pentadecyl chains.

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Poly(amideimide)s containing pendant pentadecyl chains: Synthesis and characterization

Cited by 27 publications

References 24 publications

Electrochemical Fluorescence Switching from a Patternable Poly(1,3,4‐oxadiazole) Thin Film

Electrochemical Fluorescence Switching from a Patternable Poly(1,3,4‐oxadiazole) Thin Film

Novel heat resistant nanostructure poly(amide–imide)s containing new TMA-based diacid via conventional polycondensation reaction in an ionic green medium: synthesis, morphology, and thermal properties

Synthesis and characterization of organo‐soluble poly(ether ether ketone)s and poly(ether ether ketone ketone)s containing pendant pentadecyl chains

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