Aromatic polyamides are famous high performance polymeric materials for their excellent thermal, mechanical, electrical properties, which now a days became dominant platform modern polymer chemistry area. Triptycene unit like structures in directly affects the physiochemical properties of polymer, thus especially with triptycene backbone aryl ether linkage imparts combination such as better solubility, melts processing characteristics, and thermal stability contrast those polymers without an...

The main objective of this research was to study the structure–property relationships high performance polymers with thermal stability, solubility and viscosity. Hence, a series novel poly(amide-imide)s (PAIs) synthesized from tetraphenylthiophene-thiazole containing diimide-diacid(TPTPThDIDA) monomer commercially available various aromatic diamines by using Yamazaki's direct phosphorylation reaction. resulting PAIs were obtained in yields inherent viscosities range 0.86–0.96 dL/g....

New cyclopentylidene ring-containing diamino-diesters, 1,1-bis(3-aminobenzoyloxy phenyl) cyclopentane, was prepared through reaction of cyclopentanone with two moles phenol to yield 1,1-bis (4-hydroxy cyclopentane (BHPP) (I), the resulting diol (I) on 3-nitrobenzoyl chloride in N,N-dimethyl acetamide (DMAc) and triethyl amine 1,1-bis(3-nitrobenzoyloxy (II) which finally reduced by catalytic hydrogenation presence 10% Pd/C DMAc stirred at room temperature under a 4 kg/cm2 hydrogen pressure...

A series of new polyamides containing tetraphenyl thiophene having pendant phenyl moiety with heterocyclic quinoxaline unit were synthesized by using the solution polycondensation method novel diamine monomer V isopthaloyl chloride (IPC) and terpthaloyl (TPC) in various mole proportions. These polymers characterized FT-IR, solubility, inherent viscosity, thermal analysis X-ray diffraction studies. Inherent viscosities these range 0.66 to 1.44 dL/g indicating moderate high molecular weight...

Here we report a new five polyamides prepared via solution-phase polycondensation under Yamazaki-Higashi conditions to prove the suitability of this method. The synthesized were characterized by FTIR, 1H-NMR, differential scanning calorimetry, thermogravimetric analysis, inherent viscosity, solubility and wettability tests. These amorphous in nature they are completely soluble many organic solvents could easily be solution-cast into transparent, flexible films. as-prepaired polymers showed...

A new monomer, 2,5-bis(4-carboxy methylene phenyl)-3,4-diphenyl thiophene (V) has been synthesized and characterized by physical spectroscopic methods. series of eight aromatic–aliphatic polyamides was prepared from the different aromatic diamines using Yamazaki's direct phosphorylation reaction. The were IR spectroscopy, viscosity measurements, thermal analysis. An excellent yield these obtained, with inherent viscosities in range 0.28 to 0.67 dL/g, polyamide readily soluble aprotic polar...

A new dialdehyde 1,1-bis[4-(4-benzaldehyde oxy)-3-methyl phenyl] cyclopentane (BBMPC) was synthesized starting from cyclopentanone and O-cresol to give 1,1-bis(4-hydroxy-3-methyl phenyl)cyclopentane (BHMPC); followed by reaction with 4-fluorobenzaldehyde in N, N-dimethyl formamide (DMF), containing anhydrous potassium carbonate. New series of poly(ether-azomethine)s were different diamines such as 4,4′- diamino diphenyl ether (ODA); 4,4′-diaminodiphenyl methane (MDA); 4-aminophenyl sulfone...

Aromatic polyazomethines belong to alternately conjugated polymers having backbones composed of alternate phenylene rings and azomethine linkages. Varying technological conditions towards increasing reagents mass transport the substrate is expected give such copolyazomethines thin films with containing five member active nucleus thaizole can result in special π electron systems rather than linear ones. In this paper, a were synthesized by polycondensation new diamine monomer 2, 5-Bis...

A new series of aromatic polyimides were synthesised by solution polycondensation diamine monomer with different dianhydrides via the conventional two-step method. On comparison tetraphenyl components related previous reports, synthesized containing heterocyclic tetraphenylthiophene-quinoxaline unit showed outstanding thermal properties. Synthesized high glass transition temperatures between 244–274°C. The structure-property correlations among these also studied. Also, displayed excellent...

Abstract A series of poly(ester‐amide)s based on an ester group containing lithocholic acid derivative [3‐(3‐carboxypropionyl) acid] and several aromatic diamines (naphthalene‐1,5‐diamine, 4,4′‐diaminodiphenyl ether, 4,4′‐diaminodiphenylmethane, 4,4′‐diaminodiphenylsulfone, benzidine, m ‐phenylenediamine, p tetraphenylthiophene diamine) was synthesized characterized by solubility, viscosity, IR, differential scanning calorimetry, thermogravimetric analysis, optical microscopy. The polymers...

Aromatic poly(amide-hydrazide)s contain a higher percentage of polar group in the polymer backbone and represent technologically important class high performance material exhibiting thermal, mechanical chemical stability. The present investigation deals with synthesis various new copolymers from novel aromatic dicarboxylic acid i.e., 2,5-bis(4-carboxymethylene phenyl) 3,4-diphenyl thiophene (BCMPDT) and/or terephthalic m-amino-and p- aminobenzhydrazide by Yamazaki's phosphorylation method....

The newfangled Schiff base ligand 2-{[4-(4'-amino-phenoxy)-phenylimino]-methyl}-phenol [HL1], 2-{[4-(4'amino-phenoxy)-phenylimino]-methyl}-naphthalene-2-ol [HL2], 2-{[4-(4'-amino-phenoxy)-phenylimino]-methyl}-4 -bromophenol [HL3] and 2-{[4-(4'-amino-phenoxy)-phenylimino]-methyl}-6-methoxyphenol [HL4]and it's In(III) metal complexes had been synthesized.The have characterized with elemental analysis, UV-visible, IR, 1 H NMR spectroscopy, thermal studies, magnetic susceptibility...