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At low temperature and in the presence of an acid catalyst, sulfur dioxide undergoes hetero-Diels-Alder additions with 1-oxy-1,3-dienes, giving unstable sultines, which are ionized into zwitterionic species and react as 1-oxyallylic cation intermediates (U ...
A new strategy is introduced that permits covalent attachment of an organic chromophore to a polyoxometalate (POM) cluster. Two examples are reported that differ according to the nature of the anchoring group and the flexibility of the linker. Both POMs ar ...
Colloidal Ag nanoparticles were formed by X-ray irradiation in the presence of a polymer. This new synthesis method is simple, rapid and leads to a high production yield. Compared to the citrate-reduced Ag colloidal, polymer-protected Ag nanoparticles are ...
Carrier ampholyte-based capillary electrophoresis (CABCE) has recently been introduced as an alternative to CE (CZE) in the classical buffers. In this study, isoelectric BGEs were obtained by fractionation of Servalyt pH 4-9 carrier ampholytes to cuts of t ...
The cyclosporins comprise a family of cyclic 11-peptides containing seven N-methylated, hydrophobic amino acids. Cyclosporine A (CsA) representing the major member of this family is widely used as immunosuppressive agent in organ transplantations. The biol ...
The reaction of aldehydes, amines and TMSCN in the presence of 2-iodoxybenzoic acid (IBX) and tetrabutylammonium bromide (TBAB) afforded alpha -iminonitriles, e.g. 4-MeOC6H4C(C==N):NCH2CH2Ph, in good to excellent yields under mild conditions. The presence ...
This feature article provides a compilation of tools available for preparing well-defined peptide/protein–polymer conjugates, which are defined as hybrid constructs combining (i) a defined number of peptide/protein segments with uniform chain lengths and d ...
We present mechanistic studies aimed at improving the understanding of the product ion formation rules in electron capture dissociation (ECD) of peptides and proteins in Fourier transform ion cyclotron resonance mass spectrometry. In particular, we attempt ...
We have synthesized Si Nps rich submicron area within a thin SiO2 layer using a new method called “stencil-masked ion implantation”. It consists in implanting silicon ions at ultra-low energy through windows (from 50nm to 2μm) opened in a stencil mask cont ...
Peptide based and peptide hybrid materials represent two interesting and challenging classes of biomaterials. Both classes consist of and contain, respectively, one or more polypeptide blocks, endowing the resulting polymers with enhanced self-assembly pro ...
