Ferrocene Based Azo Chromophore Functionalized Polyesters and Its Organic Analogue: Synthesis, Structural Elucidation, Thermal Behavior and IV Characterization

Fatima, Kalsoom; Gul, Asghari; Akhter, Zareen; Rahman, Rahima

doi:10.1007/s10904-016-0489-1

Cited by 7 publications

(6 citation statements)

References 18 publications

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“…The viscosity measurements were carried out using m -cresol solutions of PI and SPI (TEA salt form) at a concentration of 0.2 g dL –1 at 30 °C using a U-tube Ubbelohd viscometer. The inherent viscosities (η inh ) were found in a range of 1.128 to 1.585 dL/g, demonstrating the highly viscous nature of the polymers solutions, indicative of the fact that polyimides have quite high molecular weights. , The data are tabulated in Table S2.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis of Sulfonated Copolyimides by Thermal Imidization for Efficient Lead Ion Adsorption from Aqueous Media

Manzoor

Kalsoom

Khan

et al. 2022

ACS Appl. Polym. Mater.

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Thermally stable, high performance sulfonated copolyimide adsorbents [OBM (ODPA+BDSA•TEA+MDA) and FBM (6FDA+BDSA•TEA+MDA)] having excellent adsorption ability were prepared via a two-step thermal imidization reaction. By the introduction of hydrophilic sulfonic acid groups into the polyimide backbone, the material's hydrophilicity was improved. The anionic sulfonate group bears strong affinity toward heavy metal ions. Improvement in polymer hydrophilicity enhances the heavy metal ion adsorption capacity due to feasible access to adsorption sites. Atomic absorption spectroscopy (AAS) was employed for heavy metal ion adsorption studies. In addition, quantum chemistry calculations using Molecular Operating Environment (MOE) software were performed, to scrutinize the experimental results for molecular surface studies. A good correlation was observed between computational and experimental findings. OBM was demonstrated to be more effective for Pb(II) removal from aqueous media with a higher q e and percent removal as compared to FBM. The synthesized sulfonated copolyimides are potential adsorbents for heavy metal ions.

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Section: Resultsmentioning

confidence: 99%

“…The inherent viscosities (η inh ) were found in a range of 1.128 to 1.585 dL/g, demonstrating the highly viscous nature of the polymers solutions, indicative of the fact that polyimides have quite high molecular weights. 30,40 The data are tabulated in Table S2.…”

Section: Solubility and Viscosities Of Polyimidesmentioning

confidence: 99%

Synthesis of Sulfonated Copolyimides by Thermal Imidization for Efficient Lead Ion Adsorption from Aqueous Media

Manzoor

Kalsoom

Khan

et al. 2022

ACS Appl. Polym. Mater.

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“…The flammability of a polymer generally depicts its thermal stability [ 44 ]. The flame retardation behavior was studied using thermal degradation data to calculate the limiting oxygen index (LOI).…”

Section: Resultsmentioning

confidence: 99%

Ferrocene-Based Terpolyamides and Their PDMS-Containing Block Copolymers: Synthesis and Physical Properties

et al. 2022

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Aromatic polyamides are well-known as high-performance materials due to their outstanding properties making them useful in a wide range of applications. However, their limited solubility in common organic solvents restricts their processability and becomes a hurdle in their applicability. This study is focused on the synthesis of processable ferrocene-based terpolyamides and their polydimethylsiloxane (PDMS)-containing block copolymers, using low-temperature solution polycondensation methodology. All the synthesized materials were structurally characterized using FTIR and 1H NMR spectroscopic techniques. The ferrocene-based terpolymers and block copolymers were soluble in common organic solvents, while the organic analogs were found only soluble in sulfuric acid. WXRD analysis showed the amorphous nature of the materials, while the SEM analysis exposed the modified surface of the ferrocene-based block copolymers. The structure–property relationship of the materials was further elucidated by their water absorption and thermal behavior. These materials showed low to no water absorption along with their high limiting oxygen index (LOI) values depicting their good flame-retardant behavior. DFT studies also supported the role of various monomers in the polycondensation reaction where the electron pair donation from HOMO of diamine monomer to the LUMO of acyl chloride was predicted, along with the calculation of various other parameters of the representative terpolymers and block copolymers.

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“…The electronic absorption spectroscopy is principally operated to investigate the chromophoric moieties or the extended conjugation present in the aromatic system of polymers. 25 The UV-Visible electronic spectrum of PTBI recorded with a concentration of 10 -5 M in Propanone as solvent depicted in Fig. -1 shows a broadband around 280 nm, which is ascribed to the aromatic chromophores in the polyester.…”

Section: Spectral Studies Uv-visible Spectrummentioning

confidence: 99%

Synthesis and Studies on Aromatic Copolyester With Anticancer Activity Derived From 4,4’- Dihydroxybiphenyl and 3,5-Dihydroxytoluene

Sivaramakrishnan¹,

Elango²

2021

RJC

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In this investigation, a new wholly aromatic random copolyester containing 4,4'-dihydroxybiphenyl, 3,5dihydroxytoluene and Isophthaloyl chloride was synthesized using the solution polycondensation methodology in the mole ratio 2:1:3 and its solubility along with inherent viscosity were determined. The chemical structure of the copolyester was established by traditional spectroscopic techniques. The physical parameters of the polyester were studied employing WAXD studies and the thermal stability along with phase transitions were investigated employing TGA and DSC data. The morphological features in the polyester were probed using Scanning Electron Microscopy. The anticancer activity of copolyester was verified using HeLa (Cervical carcinoma) cell line employing MTT assay.

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Ferrocene Based Azo Chromophore Functionalized Polyesters and Its Organic Analogue: Synthesis, Structural Elucidation, Thermal Behavior and IV Characterization

Cited by 7 publications

References 18 publications

Synthesis of Sulfonated Copolyimides by Thermal Imidization for Efficient Lead Ion Adsorption from Aqueous Media

Synthesis of Sulfonated Copolyimides by Thermal Imidization for Efficient Lead Ion Adsorption from Aqueous Media

Ferrocene-Based Terpolyamides and Their PDMS-Containing Block Copolymers: Synthesis and Physical Properties

Synthesis and Studies on Aromatic Copolyester With Anticancer Activity Derived From 4,4’- Dihydroxybiphenyl and 3,5-Dihydroxytoluene

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