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Relevant academic research and scientific papers

Cobaltocene Reduction of Cu and Ag Salts and Catalytic Behavior of the Nanoparticles Formed

The modes of generation of nanoparticles (NPs) are of great interest for multiple applications in catalysis, optics, sensing, and nanomedicine. Here, fast reduction of CuSO4·5H2O and Ag salts by commercial cobaltocene yields small, stable, water-soluble Cu and Ag NPs with a narrow size distribution without any other ligand or support. The variation of the Ag salt counteranion (NO3-, F-, BF4-) strongly influences both the plasmonic absorption of the AgNPs synthesized in this way and the high apparent rate constant of the AgNP-catalyzed reduction of 4-nitrophenol by NaBH4, showing that the precursor counteranion binds to the AgNP surface. The CuNPs synthesized from CuSO4 and cobaltocene are a recyclable catalyst for the Cu-catalyzed alkyne-azide cycloaddition reaction in water extended to various azides and alkynes, including functionalization of compounds of biomedical interest. Both CuNP and AgNP catalytic activities are also very promising signs for further extension to a variety of other truly efficient metal-NP-catalyzed reactions.

Structure–Property Relationships in Click-Derived Donor–Triazole–Acceptor Materials

To shed light on intramolecular charge-transfer phenomena in 1,2,3-triazole-linked materials, a series of 1,2,3-triazole-linked push–pull chromophores were prepared and studied experimentally and computationally. Investigated modifications include variati

Rhenium(I) complexes of readily functionalized bidentate pyridyl-1,2,3-triazole "click" ligands: A systematic synthetic, spectroscopic and computational study

A family of electronically tuned fac-Re(CO)3Cl pyridyl-1,2,3-triazole complexes have been synthesized by refluxing methanol solutions of [Re(CO)5Cl] and the substituted 2-(1-R-1H-1,2,3-triazol- 4-yl)pyridine ligands (pytri-R). The re

Arylation of Click Triazoles with Diaryliodonium Salts

A robust, selective, and highly efficient method for the preparation of 1,3,4-triaryl 1,2,3-triazolium salts has been developed. It features arylation of a click triazole with a diaryliodonium salt in the presence of a copper catalyst under neat condition

New organometallic Schiff-base copper complexes as efficient "click" reaction precatalysts

A new ferrocenyl-containing unsymmetrical CuII-Schiff-base complex, 2, and its covalently poly(methyl) (methacrylate) (PMMA)-grafted counterpart 3 were synthesized and characterized using elemental analysis, electrospray ionisation (ESI) mass s

Synthesis and NMR analysis of 1,4-disubstituted 1,2,3-triazoles tethered to pyridine, pyrimidine, and pyrazine rings

A combinatorial modular approach based on the "click" copper(I)-catalysed azide-alkyne cycloaddition reaction was used to prepare a library of selected 1,4-disubstituted 1,2,3-triazoles differently functionalized with heteroaryl groups including pyridine,

Click chemistry from organic halides, diazonium salts and anilines in water catalysed by copper nanoparticles on activated carbon

An easy-to-prepare, reusable and versatile catalyst consisting of oxidised copper nanoparticles on activated carbon has been fully characterised and found to effectively promote the multicomponent synthesis of 1,2,3-triazoles from organic halides, diazonium salts, and aromatic amines in water at a low copper loading.

Heterogeneous Copper Nanocatalyst and Manufacturing Methods Thereof

This invention relates to a heterogeneous copper nanocatalyst composed of copper nanoparticles immobilized on a boehmite support, a method of preparing the same, and the use thereof. The copper nanocatalyst composed of the copper nanoparticles supported o

2-(1H-1,2,3-triazol-4-yl)-pyridine ligands as alternatives to 2,2′-bipyridines in ruthenium(II) complexes

The synthesis of a variety of 2-(1H-1,2,3-triazol-4-yl)-pyridines by click chemistry is demonstrated to provide straightforward access to mono-functionalized ligands. The ring-opening polymerization of e-caprolactone initiated by such a mono-functionalize

Heterogeneous copper catalyst for the cycloaddition of azides and alkynes without additives under ambient conditions

A new copper catalyst was developed by immobilizing copper nanoparticles in aluminum oxyhydoxide fiber. The catalyst showed high catalytic activity for the (3 + 2) Huisgen cycloaddition of nonactivated alkynes as well as activated ones with various azides