Copper-phthalocyanine coordination polymer as a reusable catechol oxidase biomimetic catalyst
authors Castro, KADF; Figueira, F; Paz, FAA; Tome, JPC; da Silva, RS; Nakagaki, S; Neves, MGPMS; Cavaleiro, JAS; Simoes, MMQ
nationality International
journal DALTON TRANSACTIONS
keywords METAL-FREE; METALLOPORPHYRIN DERIVATIVES; PORPHYRINS; OXIDATION; PROMISCUITY; COMPLEXES; NETWORK; MODELS; LIGHT; WATER
abstract The development of selective, efficient, and recoverable/reusable catalysts for oxidation reactions has become one of the main challenges of modern chemistry. Considering our interest in efficient catalytic systems based on porphyrin (Por) and phthalocyanine (Pc) coordination polymers, we report here the synthesis, characterization and catalytic activity of a new Pc coordination polymer (coined hereafter as Cu4CuPcSPy). The new Pc material was obtained in excellent yield, from the reaction of H2PcSPy with an excess amount of copper(ii) acetate. The catalytic efficiency of Cu4CuPcSPy was evaluated in the oxidation of 3,5-di-tert-butylcatechol (3,5-DTBC) in the presence of molecular oxygen from air, with or without the addition of aqueous 30% hydrogen peroxide. The comparison between the homogeneous (CuPcSPy) and the heterogeneous (Cu4CuPcSPy) catalytic systems showed a better performance for the Cu4CuPcSPy material, that can be recovered by filtration and reused, maintaining its activity roughly unchanged during three catalytic cycles. An increment of approximately 30% was also verified in the catalytic activity of the homogeneous and heterogeneous systems by adding aqueous hydrogen peroxide to the catalytic reactions.
publisher ROYAL SOC CHEMISTRY
issn 1477-9226
isbn 1477-9234
year published 2019
volume 48
issue 23
beginning page 8144
ending page 8152
digital object identifier (doi) 10.1039/c9dt00378a
web of science category Chemistry, Inorganic & Nuclear
subject category Chemistry
unique article identifier WOS:000472537600017
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journal analysis (jcr 2019):
journal impact factor 4.174
5 year journal impact factor 3.812
category normalized journal impact factor percentile 90
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