Cobalt-Chelated Polyamine Brushes on Solid Microspheres for Rapid Binding and Chemical Storage of Molecular Oxygen

Ahmet Ince; Ece Tukenmez; Niyazi Bicak; Bunyamin Karagoz

doi:10.1021/acs.iecr.9b00892

Cobalt-Chelated Polyamine Brushes on Solid Microspheres for Rapid Binding and Chemical Storage of Molecular Oxygen

Ahmet Ince, Ece Tukenmez, Niyazi Bicak, Bunyamin Karagoz^*

^*Corresponding author for this work

Department of Chemistry

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Methylated poly(vinyl amine) brushes generated on PS-DVB microspheres were demonstrated as excellent macroligands, forming hydrophilic Co(II) chelates capable of reversible molecular oxygen binding. The oxygenation is extremely fast when counteranions of cobalt are replaced with hydroxyl ions. The experiments carried out using oxygen sensor, FT-IR, TGA techniques, and gas volumetric measurements showed that the polymer complexes with either 4/1 or 2/1 [amine]/[Co] ratios form 1:1 molecular oxygen adducts which are stable up to 110-120 °C. In order to impart the chain extension effect, poly(vinyl amine-stat-DADMAC) brushes were also generated on the microspheres by using DADMAC as additional comonomer. Fast oxygenation, high oxygen binding capacity (ca. 80 mL/g), and long-term stability of the oxygen adducts make the polymeric complex superior to current systems. The cobalt complex system presented can be considered as a high capacity solid matrix for dissociation and chemical storage of the molecular oxygen from air.

Original language	English
Pages (from-to)	7769-7777
Number of pages	9
Journal	Industrial and Engineering Chemistry Research
Volume	58
Issue number	19
DOIs	https://doi.org/10.1021/acs.iecr.9b00892
Publication status	Published - 15 May 2019

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

Funding

The Turkish Scientific and Technological Research Council (TUBITAK) is greatly acknowledged for financial support (Project No. 109T803). This work was also supported by Istanbul Technical University, BAP 39921.

Funders	Funder number
TUBITAK	109T803
Turkish Scientific and Technological Research Council
Istanbul Teknik Üniversitesi	BAP 39921

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10.1021/acs.iecr.9b00892

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title = "Cobalt-Chelated Polyamine Brushes on Solid Microspheres for Rapid Binding and Chemical Storage of Molecular Oxygen",

abstract = "Methylated poly(vinyl amine) brushes generated on PS-DVB microspheres were demonstrated as excellent macroligands, forming hydrophilic Co(II) chelates capable of reversible molecular oxygen binding. The oxygenation is extremely fast when counteranions of cobalt are replaced with hydroxyl ions. The experiments carried out using oxygen sensor, FT-IR, TGA techniques, and gas volumetric measurements showed that the polymer complexes with either 4/1 or 2/1 [amine]/[Co] ratios form 1:1 molecular oxygen adducts which are stable up to 110-120 °C. In order to impart the chain extension effect, poly(vinyl amine-stat-DADMAC) brushes were also generated on the microspheres by using DADMAC as additional comonomer. Fast oxygenation, high oxygen binding capacity (ca. 80 mL/g), and long-term stability of the oxygen adducts make the polymeric complex superior to current systems. The cobalt complex system presented can be considered as a high capacity solid matrix for dissociation and chemical storage of the molecular oxygen from air.",

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T1 - Cobalt-Chelated Polyamine Brushes on Solid Microspheres for Rapid Binding and Chemical Storage of Molecular Oxygen

AU - Ince, Ahmet

AU - Tukenmez, Ece

AU - Bicak, Niyazi

AU - Karagoz, Bunyamin

PY - 2019/5/15

Y1 - 2019/5/15

N2 - Methylated poly(vinyl amine) brushes generated on PS-DVB microspheres were demonstrated as excellent macroligands, forming hydrophilic Co(II) chelates capable of reversible molecular oxygen binding. The oxygenation is extremely fast when counteranions of cobalt are replaced with hydroxyl ions. The experiments carried out using oxygen sensor, FT-IR, TGA techniques, and gas volumetric measurements showed that the polymer complexes with either 4/1 or 2/1 [amine]/[Co] ratios form 1:1 molecular oxygen adducts which are stable up to 110-120 °C. In order to impart the chain extension effect, poly(vinyl amine-stat-DADMAC) brushes were also generated on the microspheres by using DADMAC as additional comonomer. Fast oxygenation, high oxygen binding capacity (ca. 80 mL/g), and long-term stability of the oxygen adducts make the polymeric complex superior to current systems. The cobalt complex system presented can be considered as a high capacity solid matrix for dissociation and chemical storage of the molecular oxygen from air.

AB - Methylated poly(vinyl amine) brushes generated on PS-DVB microspheres were demonstrated as excellent macroligands, forming hydrophilic Co(II) chelates capable of reversible molecular oxygen binding. The oxygenation is extremely fast when counteranions of cobalt are replaced with hydroxyl ions. The experiments carried out using oxygen sensor, FT-IR, TGA techniques, and gas volumetric measurements showed that the polymer complexes with either 4/1 or 2/1 [amine]/[Co] ratios form 1:1 molecular oxygen adducts which are stable up to 110-120 °C. In order to impart the chain extension effect, poly(vinyl amine-stat-DADMAC) brushes were also generated on the microspheres by using DADMAC as additional comonomer. Fast oxygenation, high oxygen binding capacity (ca. 80 mL/g), and long-term stability of the oxygen adducts make the polymeric complex superior to current systems. The cobalt complex system presented can be considered as a high capacity solid matrix for dissociation and chemical storage of the molecular oxygen from air.

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JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

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ER -

Cobalt-Chelated Polyamine Brushes on Solid Microspheres for Rapid Binding and Chemical Storage of Molecular Oxygen

Abstract

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