Augmented Polyhydrazone Formation in Water by Template-Assisted Polymerization using Dual-Purpose Supramolecular Templates

Kai Zheng, Chang He, Hany F Nour, Zhao Zhang, Tianyu Yuan, Hassan Traboulsi, J. Mazher, Ali Trabolsi, Lei Fang, Mark Anthony Olson

Research output: Contribution to journalArticle

Abstract

Herein we report an aqueous polymerization strategy, assisted by dual-purpose supramolecular templates, for the formation of polyhydrazones and their subsequent hydrogelation. In this approach, donor-acceptor charge transfer interactions between small molecule templates and bipyridinium-based dialdehyde monomers facilitated monomer-monomer and polymer-monomer preorganization. The template-assisted polymerizations thus experienced augmented Mw and Mn values by up to 68 and 84% respectively as compared to the untemplated protocol. In this capacity, the presence of the templates and the increased molecular weight of the polymers effectively decreased the minimum monomer concentration needed for hydrogelation, enhanced the mechanical strength of the hydrogel microstructure, and increased the recovery velocity of the gel following shear-induced breakdown. The hydrogels were processed into colored films and highly crystalline ultra-light aerogels with a sheet-like morphology, as revealed by cross-polarized light, scanning electron, and transmission electron microscopies. The aerogels exhibited the ability to uptake gaseous iodine and iodine from solution with removal efficiencies and uptake capacities up to 91% and 363 wt% respectively.
Original languageEnglish (US)
Pages (from-to)doi.org/10.1039/C9PY01476D.
JournalPolymer Chemistry
StateAccepted/In press - 2020

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Polymerization
Iodine
Polymers
Monomers
Hydrogels
Water
Hydrogel
Transmission Electron Microscopy
Aerogels
Molecular Weight
Gels
Electrons
Light
Light polarization
Strength of materials
Charge transfer
Molecular weight
Crystalline materials
Transmission electron microscopy
Scanning

Cite this

Zheng, K., He, C., Nour, H. F., Zhang, Z., Yuan, T., Traboulsi, H., ... Olson, M. A. (Accepted/In press). Augmented Polyhydrazone Formation in Water by Template-Assisted Polymerization using Dual-Purpose Supramolecular Templates. Polymer Chemistry, doi.org/10.1039/C9PY01476D..

Augmented Polyhydrazone Formation in Water by Template-Assisted Polymerization using Dual-Purpose Supramolecular Templates. / Zheng, Kai ; He, Chang; Nour, Hany F ; Zhang, Zhao ; Yuan, Tianyu ; Traboulsi, Hassan ; Mazher, J. ; Trabolsi, Ali; Fang, Lei ; Olson, Mark Anthony .

In: Polymer Chemistry, 2020, p. doi.org/10.1039/C9PY01476D.

Research output: Contribution to journalArticle

Zheng, K, He, C, Nour, HF, Zhang, Z, Yuan, T, Traboulsi, H, Mazher, J, Trabolsi, A, Fang, L & Olson, MA 2020, 'Augmented Polyhydrazone Formation in Water by Template-Assisted Polymerization using Dual-Purpose Supramolecular Templates', Polymer Chemistry, pp. doi.org/10.1039/C9PY01476D..
Zheng K, He C, Nour HF, Zhang Z, Yuan T, Traboulsi H et al. Augmented Polyhydrazone Formation in Water by Template-Assisted Polymerization using Dual-Purpose Supramolecular Templates. Polymer Chemistry. 2020;doi.org/10.1039/C9PY01476D.
Zheng, Kai ; He, Chang ; Nour, Hany F ; Zhang, Zhao ; Yuan, Tianyu ; Traboulsi, Hassan ; Mazher, J. ; Trabolsi, Ali ; Fang, Lei ; Olson, Mark Anthony . / Augmented Polyhydrazone Formation in Water by Template-Assisted Polymerization using Dual-Purpose Supramolecular Templates. In: Polymer Chemistry. 2020 ; pp. doi.org/10.1039/C9PY01476D.
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AB - Herein we report an aqueous polymerization strategy, assisted by dual-purpose supramolecular templates, for the formation of polyhydrazones and their subsequent hydrogelation. In this approach, donor-acceptor charge transfer interactions between small molecule templates and bipyridinium-based dialdehyde monomers facilitated monomer-monomer and polymer-monomer preorganization. The template-assisted polymerizations thus experienced augmented Mw and Mn values by up to 68 and 84% respectively as compared to the untemplated protocol. In this capacity, the presence of the templates and the increased molecular weight of the polymers effectively decreased the minimum monomer concentration needed for hydrogelation, enhanced the mechanical strength of the hydrogel microstructure, and increased the recovery velocity of the gel following shear-induced breakdown. The hydrogels were processed into colored films and highly crystalline ultra-light aerogels with a sheet-like morphology, as revealed by cross-polarized light, scanning electron, and transmission electron microscopies. The aerogels exhibited the ability to uptake gaseous iodine and iodine from solution with removal efficiencies and uptake capacities up to 91% and 363 wt% respectively.

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