Facile synthesis of magnetic hierarchical flower-like Co3O4 spheres: Mechanism, excellent tetra-enzyme mimics and their colorimetric biosensing applications

Co3O4 nanoparticles with biomimetic activity have been synthesized using inorganic precursor by a simple liquid precipitation method without use of any organic and assisted agents. XRD and IR results showed that the as-prepared product was well-crystalline cubic Co3O4 phase with a lattice constant of a=8.079Å. The TEM image showed that the obtained Co3O4 product possesses a spherical and rectangular shape with a diameter ranging from 10 to 20nm. The Co3O4 nanoparticles catalyzed oxidation of typical peroxidase substrate (ABTS) and 1,3,5-trimethylbenzene (TMB) to give the same color changes as microperoxidase -11( MP-11), respectively. And the catalysis by Co3O4 nanoparticles shows typical Michaelis-Menten curves similar to that of MP-11. These results demonstrate that the Co3O4 nanoparticles possess a biomimetic catalysis activity similar to that found in natural enzyme. The kinetic parameters showed Co3O4 nanoparticles had efficient catalytic activity in comparison to MP-11.The easy preparation, good stability and special properties of Co3O4nanoparticles make them the promising enzyme mimics.

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Biotemplated facile synthesis of three‐dimensional micro/nanoporous tin oxide: improving the flammable and mechanical properties of flexible PVC

Micro & Nano Letters ◽

10.1049/mnl.2018.5204 ◽

2019 ◽

Vol 14 (8) ◽

pp. 828-830 ◽

Cited By ~ 1

Author(s):

Weihua Meng ◽

Weihong Wu ◽

Weiwei Zhang ◽

Luyao Cheng ◽

Yunhong Jiao ◽

...

Keyword(s):

Mechanical Properties ◽

Tin Oxide ◽

Three Dimensional ◽

Facile Synthesis

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Selective Degradation of Grindelic Acid and Its 3α-Hydroxy Analog: Facile Synthesis of Grindelistrictic Acids and Potential Intermediates for Erigerol

Synlett ◽

10.1055/s-1991-20853 ◽

1991 ◽

Vol 1991 (09) ◽

pp. 725-727 ◽

Cited By ~ 3

Author(s):

Takeshi Shimizu ◽

Sayoko Hiranuma ◽

Zhao-hui Qian ◽

Hirosuke Yoshioka

Keyword(s):

Facile Synthesis ◽

Selective Degradation

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A FACILE SYNTHESIS AND REACTIONS OF AMINO SELENOLO[2,3-b]PYRIDINE CARBOXYLATE

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v12i1.845 ◽

2015 ◽

Vol 12 (1) ◽

pp. 3910-3918 ◽

Cited By ~ 1

Author(s):

Dr Remon M Zaki ◽

Prof Adel M. Kamal El-Dean ◽

Dr Nermin A Marzouk ◽

Prof Jehan A Micky ◽

Mrs Rasha H Ahmed

Keyword(s):

Biological Activity ◽

Carbonyl Compounds ◽

Mass Spectra ◽

The Other ◽

Pyridine Derivatives ◽

Facile Synthesis ◽

High Biological Activity ◽

Basic Hydrolysis ◽

Pyridine Carboxylate ◽

Hydrolysis Of

Incorporating selenium metal bonded to the pyridine nucleus was achieved by the reaction of selenium metal with 2-chloropyridine carbonitrile 1 in the presence of sodium borohydride as reducing agent. The resulting non isolated selanyl sodium salt was subjected to react with various α-halogenated carbonyl compounds to afford the selenyl pyridine derivatives 3a-f which compounds 3a-d underwent Thorpe-Ziegler cyclization to give 1-amino-2-substitutedselenolo[2,3-b]pyridine compounds 4a-d, while the other compounds 3e,f failed to be cyclized. Basic hydrolysis of amino selenolo[2,3-b]pyridine carboxylate 4a followed by decarboxylation furnished the corresponding amino selenolopyridine compound 6 which was used as a versatile precursor for synthesis of other heterocyclic compound 7-16. All the newly synthesized compounds were established by elemental and spectral analysis (IR, 1H NMR) in addition to mass spectra for some of them hoping these compounds afforded high biological activity.

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S(IV)–Mediated Unsymmetrical Heterocycle Cross-Couplings

10.26434/chemrxiv.11307710 ◽

2019 ◽

Author(s):

Min Zhou ◽

Jet Tsien ◽

Tian Qin

Keyword(s):

Cross Coupling ◽

Reductive Elimination ◽

Facile Synthesis ◽

Trigonal Bipyramidal

<p>Herein we report a sulfur (IV) mediated cross-coupling for facile synthesis of heteroaromatic substrates. Addition of heteroaryl nucleophiles onto a simple, readily-accessible alkyl sulfinyl (IV) chloride allows formation of a trigonal bipyramidal sulfurane intermediate. Reductive elimination therefrom provides bis-heteroaryl products in a practical and efficient fashion. <br></p>

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Facile Synthesis of a Diverse Library of Mono-3-substituted β-Cyclodextrin Analogues

10.26434/chemrxiv.6453302 ◽

2018 ◽

Cited By ~ 1

Author(s):

Kathryn Kellett ◽

Brendan M. Duggan ◽

Michael Gilson

Keyword(s):

High Yield ◽

Facile Synthesis ◽

Wide Range

We have described simple, high-yield, protocols, which require only commonly accessible equipment, to synthesize a wide range of β-CD derivatives mono-substituted at the secondary face. These derivatives may be useful in their own right, and they are also scaffolds for further modification, and examples of the far broader array of derivatives that may be accessed by these procedures.

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