English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The metallopolymer cobalt(II) complex of a simple pyridine- and amide-containing copolymer (CoII-P9) was prepared and characterized with IR and 1H NMR.  The 1H NMR spectrum of the copolymer indicates that the average repeating unit of the copolymer P9 is vinyl pyridine:acrylamide = 5:1.  The IR spectra suggest that cobalt is bound to the polymer through the pyridine nitrogen atom and the acrylamide does not participate in the binding.  The oxidation of catechol by CoII-P9 in the presence of 7.5 mM H2O2 exhibits enzyme-like pre-equilibrium kinetics, yielding kcat = 0.026 ± 0.3 s–1, dissociation constant K′ = 1.9 ± 0.6 mM, and kcat /K′ = 13.7 M–1s–1.  The inert 4,5-dichlorocatechol is also oxidized by CoII-P9 in absence of H2O2 to afford rate constants of kcat = (3.1 ± 0.2) × 10–4 s–1 and K′  = 0.7 ± 0.1 mM. This study has introduced a simple catalase-like system to explore the mechanism of Co(II)-centered redox chemistry and its application.

COBALT(II) COMPLEX BINDING WITH COPOLYMER AS A PROFICIENT CATALYST FOR OXIDATION OF CATECHOL