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New chemical species isolated

Date: Jun 1, 2010

Author: David Bradley

Like a previously unknown species emerging into the glare of camera flashlights from the tropical undergrowth or crawling out from under a deep ocean rock, a seemingly simple small molecule, an organosulfur compound called oxathiirane, has been synthesised at long last and reveals itself under ultraviolet spectroscopic inspection.

Read More thumbnail image: New chemical species isolated

Protein shapeshifter

Date: May 15, 2010

Author: David Bradley

British researchers have created a molecular track to emulate this process and added a small molecule that can shuffle back and forth like a courier on the track.

Read More thumbnail image: Protein shapeshifter

Glyphosate uncouples gas exchange and chlorophyll fluorescence

Date: May 10, 2010

Author:

Studies on CO2 assimilation, conductance and chlorophyll fluorescence in barley (Hordeum vulgare L.) exposed to increasing doses of glyphosate suggest that gas-exchange parameters are more sensitive biomarkers for glyphosate toxicity than chlorophyll fluorescence.

Read More thumbnail image: Glyphosate uncouples gas exchange and chlorophyll fluorescence

Quantum dots boost anticancer drug

Date: May 1, 2010

Author: David Bradley

Quantum dots (QDs) have received significant attention in biological and biomedical fields. Now, UV-Vis spectroscopy and other techniques have been used to investigate their utility in enhancing the activity of the anticancer agent daunorubicin (DNR) in treating leukaemia cells.

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Forensic discrimination of dyed hair color: I. UV-Visible microspectrophotometry

Date: Apr 12, 2010

Author:

Hair samples treated with 55 different red hair dyes were analyzed using UV-visible microspectrophotometry between 200 and 700 nm. The contribution of the hair substrate is predominantly observed at 300-400 nm while the dye peak is evident at 425-550 nm.

Read More thumbnail image: Forensic discrimination of dyed hair color I_ UV-Visible microspectrophotometry

Liquid light molecules

Date: Apr 1, 2010

Author: David Bradley

With suitable chemical modification, unprecedented room temperature liquid porphyrins could be used as optical limiters in optoelectronics and spectroscopic instrumentation, according to researchers in Poland.

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Increase in CD230 (cellular prion protein) fluorescence on blood lymphocytes in BSE-infected nonhuman primates

Date: Mar 8, 2010

Author:

Simian cellular prion protein epitopes were mapped by flow cytometry using monoclonal antibodies. Blood lymphocytes from asymptomatically infected as well as diseased macaques were characterized by increased CD230 fluorescence.

Read More thumbnail image: Increase in CD230 cellular prion protein fluorescence on blood lymphocytes in BSE-infected nonhuman primates

Sunscreen spies

Date: Mar 1, 2010

Author: David Bradley

Sunscreen and boron can work together to make a compound that changes colour when touched under ultraviolet light. The compound changes from blue-green to yellow with the gentlest of rubs and then reverts quickly to blue-green when gently warmed, although the process is reversible at room temperature.

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Electrical and optical properties of polyaniline with a weblike morphology

Date: Feb 8, 2010

Author:

A method was described for the preparation of nanostructured polyaniline via the oxidation polymerization of aniline hydrochloride in the presence of an anionic surfactant.

Read More thumbnail image: Electrical and optical properties of polyaniline with a weblike morphology

Carbon dioxide trap and drop

Date: Feb 1, 2010

Author: David Bradley

The reduction of greenhouse gas carbon dioxide to a useful chemical industry feedstock material, carbon monoxide, can be catalysed by a ruthenium-substituted polyoxometalate according to a new study. The work holds the promise of our developing a carbon-neutral energy platform.

Read More thumbnail image: Carbon dioxide trap and drop
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