Synthesis of Benzaldehyde-Functionalized Glycans: A Novel Approach Towards Glyco-SAMs as a Tool for Surface Plasmon Resonance Studies
作者:Sebastian Kopitzki、Knud J. Jensen、Joachim Thiem
DOI:10.1002/chem.200902693
日期:——
In recent years the interest in tools for investigating carbohydrate–protein (CPI) and carbohydrate‐carbohydrate interactions (CCI) has increased significantly. For the investigation of CPI and CCI, several techniques employing different linking methods are available. Surfaceplasmonresonance (SPR) imaging is a most appropriate tool for analyzing the formation of self‐assembled monolayers (SAM) of
A Fischer carbene complex was grafted onto self-assembledmonolayers (SAMs) on gold or glass by a copper-free “click” reaction. Pendant lysine residues of protein A obtained from Staphylococcus aureus rapidly reacted with the electrophilic metal complex on SAM effecting a covalent attachment of protein A with the surface. The protein A coated surface further led to bioaffinity immobilization of rabbit
An efficient and convenient synthesis of unsymmetrical disulfides from thioacetates
作者:Slawomir Lach、Sebastian Demkowicz、Dariusz Witt
DOI:10.1016/j.tetlet.2013.10.056
日期:2013.12
We have developed convenient methods for the synthesis of functionalized unsymmetrical dialkyl disulfides under mild conditions in very good yields. The designed method is based on the reaction of (5,5-dimethyl-2-thioxo-1,3,2-dioxaphosphorinan-2-yl)-disulfanyl derivatives 1 with functionalized alkyl thiolate anions, generated in situ from thioacetates 2 and sodium methoxide or butylamine. The developed
The rational design of a mercury(II) ligand consisting in a 1-(4′-oxyphenyl)-4(1′-pyrenyl)-2,3-diaza-1,3-butadiene receptor unit, optimizes the sensitivity and reliability of a SPR sensor by the formation of a well packed SAM over the gold surface. SPR analysis allows detecting mercury(II) concentrations in aqueous systems in the picomolar range, meliorating on three orders of magnitude the EUmercury(II) detection limit in drinkable water.
The present invention relates to sample presentation devices useful in performing analytical measurements. These devices have been configured to enable various aspects of liquid handling such as: retention, storage, transport, concentration, positioning, and transfer. Additionally, these devices can enhance the detection and characterization of analytes. The sample presentation devices of the present invention are comprised of one or more substrates having a plurality of zones of differing wettability. Methods of analyzing samples using the sample presentation device of the invention, as well as methods of making the sample presentation devices are disclosed.