Tetrapolymer Network Hydrogels via Gum Ghatti-Grafted and N–H/C–H-Activated Allocation of Monomers for Composition-Dependent Superadsorption of Metal Ions

Mondal, Himarati; Karmakar, Mrinmoy; Dutta, Arnab; Mahapatra, Manas Mohan; Deb, Mousumi; Mitra, Madhushree; Roy, Joy Sankar Deb; Roy, Chandan; Chattopadhyay, Pijush Kanti; Singha, Nayan Ranjan

doi:10.1021/acsomega.8b01218

Cited by 35 publications

(19 citation statements)

References 50 publications

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“…The adsorption mechanism was explored via fitting of the kinetics data to pseudo-first- and pseudo-second-order kinetics models (Figure b and Figure S5). Notably, better fitting of pseudo-second-order eq compared to pseudo-first-order eq suggested chemisorption − (Table S8) via ionic and coordinate interactions of the O donor of −COO – /N donor of −CON</–CONH– in 2 with Pb(II), substantiated via activation energy ( E a ), i.e., 24.05 kJ mol –1 at 303 K. − The spontaneity of the chemisorption was inferred from −Δ G 0 . The exothermic nature of adsorption was substantiated from – Δ H 0 (Table S9) calculated using van’t Hoff’s equation. − Additionally, Δ S 0 indicated the binding affinity of Pb(II) with 2 (Figure c).…”

Section: Resultsmentioning

confidence: 99%

Fluorescent Guar Gum-g-Terpolymer via In Situ Acrylamido-Acid Fluorophore-Monomer in Cell Imaging, Pb(II) Sensor, and Security Ink

Mitra

Mahapatra

Dutta

et al. 2020

ACS Appl. Bio Mater.

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The nonconventional purely aliphatic scalable and reusable fluorescent guar gum (GRGM)-graf ted-acrylic acid-co-3-(N-isopropylacrylamido)propanoic acid (NIPAPA)-co-N-isopropylacrylamide (GRGM-graf ted-1, i.e., 2), was synthesized via graf ting of the optimum amount of GRGM and N−H functionalized in situ protrusion of acrylamido-acid fluorophore-monomer, i.e., NIPAPA, in multi C−C/N−C/O−C coupled solution polymerization of two non-emissive monomers in water. The intrinsically fluorescent noncytotoxic 2 envisaged the excellent potentials in sensing and removal of Pb(II), security ink, logic function, and imaging of both cancer and normal cells. The emission intensities of 2 elevated in concentrated solutions and solid state because of concentrationenhanced emission and aggregation-induced enhanced emission (AIEE) characteristics of 2. Additionally, the emission efficiency of 2 elevated considerably with increasing GRGM contents and temperatures. The structure of 2, in situ attached fluorophoremonomer, AIEE, cell-imaging ability, and the superadsorption mechanism were studied employing 1 H/ 13 C NMR, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, ultraviolet−visible spectroscopy, atomic absorption spectroscopy, thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, dynamic light scattering, highresolution transmission electron microscopy, fluorescence imaging, and fluorescence lifetime, along with measuring isotherms, kinetics, and thermodynamic parameters. The location, geometries, and electronic-structures of fluorophore, along with absorption and emission properties, of 2 were explored via density functional theory (DFT), time-dependent DFT, and natural transition orbital analyses. In solution, cyan light-emitting 2 envisaged an average 1.22 ns lifetime in CHCl 3 . The limit of detection and the maximum adsorption capacity were 2.94 × 10 −7 M and 1100.25 mg g −1 at pH 7.0, 303 K, and 1000 ppm, respectively.

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Section: Resultsmentioning

confidence: 99%

Fluorescent Guar Gum-g-Terpolymer via In Situ Acrylamido-Acid Fluorophore-Monomer in Cell Imaging, Pb(II) Sensor, and Security Ink

Mitra

Mahapatra

Dutta

et al. 2020

ACS Appl. Bio Mater.

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“…For the large-scale removal of Bi(III), the adsorption experiment was monitored within 8–40 ppm Bi(III) at 303 K and 0.01 g of 1 / 2 . The results of adsorption experiments were fitted with Freundlich, BET, and Langmuir isotherms (eqs –) and kinetics models, i.e., pseudo-first- and pseudo-second-order (eqs and ), of which Langmuir (Figure b) and pseudo-second-order models (Figure c) fitted the best, substantiated by R 2 and F values (Table ), , indicating the chemical binding of Bi(III) with 1 and 2 . …”

Section: Resultsmentioning

confidence: 84%

Intrinsically Fluorescent Biocompatible Terpolymers for Detection and Removal of Bi(III) and Cell Imaging

Mahapatra

Dutta

Mitra

et al. 2020

ACS Appl. Bio Mater.

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Intrinsically fluorescent biocompatible multifunctional multipurpose terpolymers, i.e., methyl methacrylate-co-methyl 3-(N-isopropylacrylamido)-2-methylpropanoate-co-N-isopropylacrylamide (MMA-co-MNIPAMP-co-NIPAm, 1) and methyl methacrylate-co-methyl 3-(N-hydroxymethylacrylamido)-2-methylpropanoate-co-N-hydroxymethylacrylamide (MMA-co-MNHMAMP-co-NHMAm, 2), were synthesized via in situ-attached acrylamido-ester monomers during polymerization of hydrophobic monomers in water medium. These nonconjugated fluorescent terpolymers presenting aggregation-enhanced emissions (AEEs) were suitable for Bi(III) sensors, Bi(III) removal, cell imaging, and security inks. The fluorescence properties, mechanisms of quenching, interactions of Bi(III) with 1 and 2, and Bi(III) adsorption were explored using theoretical analyses of 1, 2, Bi(III)-1, and Bi(III)-2. Considering the overall properties, 1 was more suitable for diverse prospective applications.

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“…Herein, the negative Δ G 0 for dyes and Hg(II) (Table ) indicated spontaneous chemisorption. , However, gradual increase in −Δ G 0 for adsorption of both the dyes and Hg(II) with the rise in temperature confirmed the enhancement of physicochemical interactions at relatively higher temperatures. In addition, the exothermic nature of adsorption was inferred from the negative Δ H 0 (Figure S5d–f), whereas positive Δ S 0 specified the increase in randomness at the solid–solution interface during adsorption of BCB, SF, and Hg(II).…”

Section: Resultsmentioning

confidence: 94%

Scalable Synthesis of Collagenic-Waste and Natural Rubber-Based Biocomposite for Removal of Hg(II) and Dyes: Approach for Cost-Friendly Waste Management

et al. 2019

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For initiating a prosperous cost-friendly waste management of small-scale industries, cow buffing dust (CBD), one of the abundantly available semisynthetic collagenic solid wastes, has been used as a nonsulfur cross-linker of natural rubber (NR) for fabricating an NRCBD–biocomposite superadsorbent. The as-prepared reusable biocomposite bearing variegated collagenic and noncollagenic N-donors, along with the O-donors, has been reported for ligand-selective preferential superadsorption from waste water. Thus, a CBD and NR-based scalable biocomposite bearing optimum cross-linking, excellent physicochemical properties, and reusability has been developed via systematic optimization of the torque and reaction time for cost-friendly adsorptive exclusion of dyes, such as 2,8-dimethyl-3,7-diamino-phenazine (i.e., safranine, SF) and (7-amino-8-phenoxazin-3-ylidene)-diethylazanium dichlorozinc dichloride (i.e., brilliant cresyl blue), BCB, and Hg(II). The CBD-aided curing of NR has been achieved through the formation of a cross-linked chromane-ring originated via reaction between the methylol-phenol ring of phenol-formaldehyde resin and isoprene unit of NR. The partial disappearance of unsaturation in cured-NRCBD, relative variation of crystallinity, surface properties, elevated thermal stabilities, and ligand-selective superadsorption have been studied by advanced microstructural analyses of unadsorbed and/or adsorbed NRCBD using Fourier transform infrared (FTIR), 13 C nuclear magnetic resonance, ultraviolet–visible, and O 1s-/N 1s-/C 1s-/Hg 4f 7/2,5/2 -X-ray photoelectron spectroscopies, thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, field emission scanning electron microscopy, energy-dispersive spectroscopy, and pH PZC . Response surface methodology-based optimization has been employed to attain the optimum potential of NRCBD, considering the interactive effects between pH i , temperature, and concentration of the dye. H-aggregate and time-dependent hypochromic effect has been observed during individual adsorption of dyes. Moreover, the prevalence of chemisorption via ionic interaction between NRCBD and SF, BCB, and Hg(II) has been realized by FTIR, fitting of kinetics data to the pseudosecond-order model, and measurement of activation energies. The Brunauer–Emmett–Teller and Langmuir isotherms fit the best to BCB and SF/Hg(II), respectively. Thermodynamically spontaneous chemisorption have shown the maximum adsorption capacities of 303.61, 46.14, and 166.46 mg g –1 for SF, BCB, and Hg(II), respectively, at low initial concentration of Hg(II)/dyes = 40 ppm, 303 K, and adsorbent dose = 0.01 g.

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Tetrapolymer Network Hydrogels via Gum Ghatti-Grafted and N–H/C–H-Activated Allocation of Monomers for Composition-Dependent Superadsorption of Metal Ions

Cited by 35 publications

References 50 publications

Fluorescent Guar Gum-g-Terpolymer via In Situ Acrylamido-Acid Fluorophore-Monomer in Cell Imaging, Pb(II) Sensor, and Security Ink

Fluorescent Guar Gum-g-Terpolymer via In Situ Acrylamido-Acid Fluorophore-Monomer in Cell Imaging, Pb(II) Sensor, and Security Ink

Intrinsically Fluorescent Biocompatible Terpolymers for Detection and Removal of Bi(III) and Cell Imaging

Scalable Synthesis of Collagenic-Waste and Natural Rubber-Based Biocomposite for Removal of Hg(II) and Dyes: Approach for Cost-Friendly Waste Management

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