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Italian scientists label cells with a contrast agent and track via MRI, which shows long retention times due to partial internalisation
12-Feb-2009 - Silvio Amie and his colleagues from the University of Turin and the University of Eastern Piedmont, in Italy, have anchored a gadolinium (Gd)-based contrast agent on cell surfaces via disulfide bridges. Several kinds of cells show high levels of free exofacial protein thiol (EPT) groups on the ...
09-Feb-2009 - Amino acids can break the symmetry of crystals and amplify the crystals' chirality, according to scientists in Canada. Louis Cuccia and Pui Shan Monica Cheung, at Concordia University, Montreal, investigated the crystallisation of ethylenediammonium sulfate (EDS). EDS is an achiral molecule ...
02-Feb-2009 - Polish scientists have made a molecular container that can encapsulate molecules and differentiate between their enantiomers. Agnieszka Szumna and Bogumil Kuberski at the Polish Academy of Sciences, Warsaw, made the container from vase-shaped molecules called resorcinarenes substituted with amino ...
30-Jan-2009 - Hans-Joachim Knölker, and colleagues from the Technical University of Dresden have developed the first total synthesis of a family of antiostatins. Antiostatins, isolated from a strain of bacteria, are antioxidative agents with potent antibiotic activity. Until now, they have only been ...
Surface-enhanced Raman scattering has been used to probe single molecular behaviour by scientists in China and Sweden
28-Jan-2009 - Probing single molecular behaviour using surface-enhanced Raman scattering (SM-SERS) has attracted considerable attention recently, although there are a few drawbacks. One major problem is the strong spectral-fluctuation (also known as ‘signal-blinking’) that is associated with single molecules, ...
27-Jan-2009 - Buddie Mullins and co-workers from the University of Texas, in the US, have performed the oxidative dehydrogenation of amines using heterogeneous gold catalysts with chemisorbed atomic oxygen on the gold surface. Mullins and his team show that gold covered with atomic oxygen, in the absence of ...
26-Jan-2009 - Nicola Armaroli and co-workers from CNR-ISOF, Bologna, Italy, and Davide Bonifazi and colleagues from the Università di Trieste, Italy, and the University of Namur, Belgium, have shown that π-conjugated molecules bearing complementary hydrogen bonding sites can self-organise into complex ...
23-Jan-2009 - South Korean scientists have developed a racemisation-resistant substrate that can be selectively alkylated to make new chiral carbon centres. Although there are many ways to make chiral carbon centres by alkylating carbonyl compounds, until now scientists have been unable to asymmetrically ...
22-Jan-2009 - Christoph Schalley and his colleagues from Freie Universität Berlin use electrospray ionization Fourier-transform ion-cyclotron-resonance (ESI-FTICR) to provide new insights into metallo-supramolecular reaction mechanisms. ESI-FTICR mass spectroscopy (MS) can be used on isolated compounds to ...
19-Dec-2008 - Two easy-to-use new ways of detecting melamine on the production line are reported in the Royal Society of Chemistry’s Chemical Communications. Responding to the recent tragic incidences of illness and death in China following melamine contamination in dairy products, two separate techniques will ...
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