Synthesis of catalytically active gold clusters on the surface of Fe3O4@SiO2 nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (102) ◽  
pp. 100614-100622 ◽  
Author(s):  
Paulino Alonso-Cristobal ◽  
M. Arturo Lopez-Quintela ◽  
Rafael Contreras-Caceres ◽  
Enrique Lopez-Cabarcos ◽  
Jorge Rubio-Retama ◽  
...  
Keyword(s):  
Sio2 Nanoparticles ◽  
Reducing Agents ◽  
Gold Clusters ◽  
Water Soluble ◽  
Mild Conditions ◽  
Catalytically Active ◽  
Novel Method

This work proposes a novel method to obtain catalytically active gold clusters by using the water-soluble 5,10,15,20-Tetrakis(4-trimethyl-ammonio-phenyl)porphyrin under mild conditions instead of using strong reducing agents.

Redox and Fluorophore Functionalization of Water-Soluble, Tiopronin-Protected Gold Clusters

1999 ◽  
Vol 121 (30) ◽  
pp. 7081-7089 ◽  
Author(s):  
Allen C. Templeton ◽  
David E. Cliffel ◽  
Royce W. Murray
Keyword(s):  
Gold Clusters ◽  
Water Soluble

scholarly journals Electronic and Assembly Properties of a Water-Soluble Blue Naphthalene Diimide

2021 ◽  
Author(s):  
Thomas Welsh ◽  
Olga Matsarskaia ◽  
Ralf Schweins ◽  
Emily Rose Draper
Keyword(s):  
Careful Consideration ◽  
Water Soluble ◽  
Mild Conditions ◽  
Deep Blue ◽  
Naphthalene Diimide

Herein we report on the synthesis and characterisation of a water soluble deep blue naphthalene diimide, (iPrNH)2NDI‒V. The synthesis is performed under mild conditions and careful consideration of the purification...

Continuous flow processes for the S-alkynylation of cysteine-containing peptides and thioglycoside under catalyst-free, oxidant-free and mild conditions

2021 ◽  
Author(s):  
Long-Zhou Qin ◽  
Xin Yuan ◽  
Jie Liu ◽  
Meng-yu Wu ◽  
Qi Sun ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Mild Conditions ◽  
Catalyst Free ◽  
Flow Processes ◽  
Novel Method

Herein, we develop a novel method for the selective alkynylation of cysteine-containing peptides and 1-thioglycoside residues by the use of continuous flow. This method was characterised by the mild conditions...

Micropatterned array to assess the interaction of single platelets with platelet factor 4-heparin-IgG complexes

2014 ◽  
Vol 111 (05) ◽  
pp. 862-872 ◽  
Author(s):  
Krystin Krauel ◽  
Nikolay Medvedev ◽  
Raghavendra Palankar ◽  
Andreas Greinacher ◽  
Mihaela Delcea
Keyword(s):  
Calcium Imaging ◽  
Cell Function ◽  
Platelet Factor 4 ◽  
Water Soluble ◽  
Cell Level ◽  
Platelet Factor ◽  
Ligand Density ◽  
Heparin Complexes ◽  
Novel Method ◽  
Platelet Aggregates

SummaryWe report a strategy to generate by electron beam lithography high fidelity micropatterned arrays to assess the interaction of single platelets with immobilised ligands. As a proof-of-principle we functionalised the microarrays with platelet factor 4 (PF4)-heparin-IgG complexes. We embedded biotinylated water-soluble quantum dots into polyethylene glycol (PEG)-coated micropatterned arrays and functionalised them via streptavidin to bind biotinylated ligands, here biotinylated-PF4/heparin complexes. The integrity of the PF4/heparin-complexes was shown by binding of anti-PF4/heparin antibodies. Ligand density was quantified by immunofluorescence and immunogold antibody labelling. Real-time calcium imaging was employed for read-out of single platelets activated on micropatterned surfaces functionalised with PF4/heparin-IgG complexes. With the smallest micropatterns (0.5x0.5 µm) we show that single platelets become strongly activated by binding to surface-immobilised PF4/heparin-IgG, while on larger micropatterns (10x10 µm), platelet aggregates formed. These findings that HIT antibodies can cause platelet activation on microarrays illustrate how this novel method opens new avenues to study platelet function at single cell level. Generating functionalized microarray surfaces to which highly complex ligands can be bound and quantified has the potential for platelet and other cell function assays integrated into high-throughput microfluidic microdevices.

scholarly journals High-yield Aromatic Monomers and Pure Cellulose Production by Oxidative Catalytic Fractionation of Lignocellulose in the presence of CuO Nanoparticles

2021 ◽  
Author(s):  
Yuting Zhu ◽  
Yuhe Liao ◽  
Luying Lu ◽  
Wei Lv ◽  
Jing Liu ◽  
...  
Keyword(s):  
Cuo Nanoparticles ◽  
Water Soluble ◽  
High Yield ◽  
Cellulose Production ◽  
Carbon Efficiency ◽  
Mild Conditions ◽  
Pure Cellulose ◽  
Cuo Nps ◽  
Lignocellulosic Feedstock ◽  
High Cellulose

<a></a><a>Herein, we report the catalytic use of multifunctional CuO nanoparticles (NPs) to oxidatively fractionate lignocellulosic feedstock with dioxygen in aqueous NaOH under mild conditions . In presence of CuO NPs, lignocellulose is fractionated into three parts, overall yielding 90% carbon efficiency. Lignin is converted to up to 45.6 wt% in organic soluble aromatic aldehyde monomers, rich in vanillin and syringaldehyde, the value surpassing the theoretical one based on b-O-4 bond content, indicating significant cleavage of other ether bonds. All hemicellulose is selectively converted into water soluble small (di)acids, mainly to oxalic acid. Up to 81% of cellulose, in contrast, is obtained as a white crystalline residue with high cellulose purity (over 95%), which can readily be transformed into high quality nanocellulose, useful in many applications.</a>

Synthesis of allyl-aziridines from α-halo oxime ethers and allyl zinc bromides

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 26437-26440 ◽  
Author(s):  
Songlin Zheng ◽  
Songlin Zhang
Keyword(s):  
Grignard Reagents ◽  
Mild Conditions ◽  
Novel Method ◽  
Organozinc Reagents

A novel method for the preparation of allyl aziridines by reacting α-halo oxime ethers with allylic zinc reagents under mild conditions. Some advantages of using organozinc reagents are that they are easily prepared, non-toxic, and more selective than Grignard reagents.

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