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Sagar S, Nath P, Kisan DA, Karmakar H, Ray A, Sarkar A, Panda TK. Unprecedented ROP of quinazolinones to polyacylamidines using a cesium catalyst. Chem Commun (Camb) 2024; 60:5542-5545. [PMID: 38699830 DOI: 10.1039/d4cc00491d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Unprecedented ring-opening polymerization of quinazolinones to produce novel polyacylamidines, led by a unique cooperation between a cesium metal center and imino-phosphanamidinate ligand, was developed. Morphological studies revealed the formation of a unique macromolecular assembly producing nanofibers in the absence of a templating agent with excellent control of molecular weights and polydispersity index.
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Affiliation(s)
- Shweta Sagar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Priyanku Nath
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Devadkar Ajitrao Kisan
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Aranya Ray
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd, Survey No. 09, Hosur Road, Electronic City (west), Bangalore-560100, India.
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
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Dinari M, Fardmanesh K, Maleki MH, Asadi P. Synthesis, characterization and antimicrobial properties of new L-cysteine based chiral aromatic polyamides. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-04020-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Osman SM, Alasmary FA, Kenawy E, Aly ESA, Khattab SN, El-Faham A. Synthesis, characterization and comparative thermal degradation kinetics of s-Triazine based polymers. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02667-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Effect of triazine based silane coupling agent modified LDH on the thermal and mechanical properties of PVC based nanocomposites. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02686-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Tamboli AB, Kalshetti BS, Ghodke SD, Diwate AV, Maldar NN. Synthesis and characterization of semi-aromatic polyamides containing heterocyclic 1,3,5 s-triazine and methylene spacer group for thermally stable and colloidal property. Des Monomers Polym 2020; 23:93-105. [PMID: 33029078 PMCID: PMC7473130 DOI: 10.1080/15685551.2020.1795435] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
A new aromatic diacid (II) was synthesized and Characterized by Spectroscopic techniques namely, FT-IR, 1 H and 13 C NMR, etc. A series of aromatic aliphatic polyamides containing phenoxy s-triazine ring with methylene spacer group was synthesized from diacid (II) and various aromatic diamines by using Yamazaki Phosphorylation method. These polyamides were obtained in good yields and characterized by solubility in common organic solvent, inherent viscosity, FT-IR, X-ray diffraction analysis. All of these polyamides were found to be amorphous in morphology as indicated by XRD to posses outstanding solubilities, and to be easily dissolved in amide-type polar aprotic polar solvents. Polyamides with moderate inherent viscosity in the range 0.21 to 0.41 dL/g in N,N,dimethyl formamide solvent (DMF) at 30 ± 0.1° C. The Thermal properties of the polyamides were evaluated by Thermogravimetric analysis and Differential scanning calorimetery. These polymer shows good thermal stability with glass transition temperature (Tg) of 143-223°C and their (Tmax) weight loss temperature were around 426-455°C, confirming their good thermal stability. The char yields of these polymers were given their limiting oxygen index LOI 32.3 to 37.5 5% values of polyamides; indicate these polymers also show good flame resistance. The NPs were negatively charged with a zeta potential of -24.2 to -37.9 mV indicating a good colloidal stability against aggregation.
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Affiliation(s)
- A B Tamboli
- Chemistry Department, Santosh Bhimrao Patil Arts, Commerce and Science College, Solapur, India
| | - B S Kalshetti
- Chemistry Department, Santosh Bhimrao Patil Arts, Commerce and Science College, Solapur, India
| | - S D Ghodke
- Chemistry Department, Santosh Bhimrao Patil Arts, Commerce and Science College, Solapur, India
| | - A V Diwate
- Chemistry Department, Santosh Bhimrao Patil Arts, Commerce and Science College, Solapur, India
| | - N N Maldar
- Chemistry Department, Santosh Bhimrao Patil Arts, Commerce and Science College, Solapur, India
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Synthesis and characterization of processable aromatic poly(ether ether ketone amide)s modified by phenoxy and 1,3 ketone moiety linkages. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-019-03093-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tamboli AB, Bhorkade RG, Kalshetti BS, Ghodake SD, Maldar NN. Soluble aromatic polyamides modified by incorporation of 1,2,4-triazole and pentadecyl units into the backbone of polymer. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2019.1602475] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Babanzadeh S, Mehdipour-Ataei S. Synthesis of novel photoactive aromatic polyamides based on anthraquinone chromophore: Characterization and properties. ADVANCES IN POLYMER TECHNOLOGY 2018. [DOI: 10.1002/adv.22131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Dinari M, Haghighi A. Ultrasound-assisted synthesis of nanocomposites based on aromatic polyamide and modified ZnO nanoparticle for removal of toxic Cr(VI) from water. ULTRASONICS SONOCHEMISTRY 2018; 41:75-84. [PMID: 29137801 DOI: 10.1016/j.ultsonch.2017.09.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/14/2017] [Accepted: 09/14/2017] [Indexed: 06/07/2023]
Abstract
In this study, novel nanocomposites (NCs) of aromatic polyamide (PA) and surface modified ZnO nanoparticle with s-triazine heterocyclic ring was introduced for efficient removal of toxic hexavalent chromium (VI) from aqueous solution. The surface of ZnO nanoparticle was modified by s-triazine core silane coupling agent (ZnO-TSC) and PA/ZnO-TSC NCs with different amount of ZnO-TSC nanoparticles (0, 5, 10 and 15wt%) were prepared by ultrasonic irradiation. The synthesized PA/ZnO-TSC NCs were characterized by FT-IR, XRD, FE-SEM, TEM and TGA methods. TEM images showed that ZnO nanoparticles were dispersed homogeneously in the polymer matrix. The adsorption experiments were carried out in batch mode to optimize various parameters like contact time, pH and concentration of metal ion that influence the adsorption rate. The maximum uptakes of Cr(VI) at pH 4.0 was 72%, 81%, 89% and 91% for pure PA, NC5%, NC10% and NC15%, respectively. The kinetic of adsorption was investigated and the pseudo second-order model is an appropriate model for interpretation of adsorption mechanism of Cr(VI) ions.
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Affiliation(s)
- Mohammad Dinari
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
| | - Atefeh Haghighi
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran
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Synthesis and properties of novel soluble fluorinated aromatic polyamides containing 4-benzoyl-2,3,5,6-tetrafluorophenoxy pendant groups. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1454-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Dinari M, Haghighi A. Efficient removal of hexavalent chromium and lead from aqueous solutions by s-triazine containing nanoporous polyamide. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mohammad Dinari
- Department of Chemistry; Isfahan University of Technology; Isfahan 84156-83111 Iran
| | - Atefeh Haghighi
- Department of Chemistry; Isfahan University of Technology; Isfahan 84156-83111 Iran
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