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Ultraviolet protection: Natural and synthetic

Date: Nov 1, 2013

Author: David Bradley

Italian researchers describe in the journal Angewandte Chemie how it is possible to engineer in the laboratory a synthetic mimic of natural eumelanin with atypical structural characteristics. 

Read More thumbnail image: Ultraviolet protection Natural and synthetic

Journal Highlight: Advances in fluorescence diagnosis to track footprints of cancer progression in vivo

Date: Oct 7, 2013

Author: spectroscopyNOW

A broad overview is provided of fluorescence techniques for in vivo cancer diagnosis and therapy monitoring in preclinical models, as well as clinical translation.

Read More thumbnail image: Journal Highlight Advances in fluorescence diagnosis to track footprints of cancer progression in vivo

Catalytic carbenes: UV and the metal connection

Date: Oct 1, 2013

Author: David Bradley

A team of scientists led by University of Wisconsin-Madison chemist John Berry has developed a technique that lets them freeze the action in a reaction catalysed by a dirhodium carbene complex long enough during a critical step so that they can see the fine details of the mechanism using UV spectroscopy and other techniques.

Read More thumbnail image: Catalytic carbenes UV and the metal connection

Journal Highlight: Fluorescence lifetime imaging of lignin autofluorescence in normal and compression wood

Date: Sep 9, 2013

Author: spectroscopyNOW

The fluorescence lifetime of wood cell walls was examined using time-correlated single photon counting to detect differences in lignin composition and measure the molecular environment within cell walls of normal and compression wood.

Read More thumbnail image: Journal Highlight Fluorescence lifetime imaging of lignin autofluorescence in normal and compression wood

Natural light: Prototyping light harvesters

Date: Sep 1, 2013

Author: David Bradley

A ring of protein and pigments, half synthetic and half natural, can be used to quickly prototype light-harvesting antennae that absorb more sunlight than their wholly natural counterparts. The system could be used to prototype ultraviolet and visible absorbing molecules for solar energy trapping.

Read More thumbnail image: Natural light Prototyping light harvesters

Journal Highlight: Li-S battery analyzed by UV/Vis in operando mode

Date: Aug 12, 2013

Author: spectroscopyNOW

UV/Vis spectrophotometry has been used to study the polysulfides in Li–S batteries to help in elucidating the operational mechanism.

Read More thumbnail image: Journal Highlight Li-S battery analyzed by UVVis in operando mode

Mars: Peering into past atmospherics

Date: Aug 1, 2013

Author: David Bradley

An Imaging Ultraviolet Spectrometer will provide complementary data to the  Neutral Gas and Ion Mass Spectrometer (NGIMS) and other instruments aboard NASA's MAVEN spacecraft, which is destined for Mars and will measure the gas composition of the Red Planet to give us a clearer picture of its past.

Read More thumbnail image: Mars Peering into past atmospherics

Journal Highlight: Super-resolution fluorescence imaging of directly labelled DNA: from microscopy standards to living cells

Date: Jul 8, 2013

Author: spectroscopyNOW

This minireview provides an update of recent progress in super-resolution fluorescence imaging methods for DNA.

Read More thumbnail image: Journal Highlight Super-resolution fluorescence imaging of directly labelled DNA from microscopy standards to living cells

Lip up: Fatty molecules investigated

Date: Jul 1, 2013

Author: David Bradley

Fatty lipid molecules in the human body act not only as energy storage molecules and structural elements but are also important signalling compounds. Lipids with their head in a molecular cage have now been used to study such molecules and their roles in diseases such as atherosclerosis and diabetes.

Read More thumbnail image: Lip up Fatty molecules investigated

Journal Highlight: Spectroscopic studies on nicotine and nornicotine in the UV region

Date: Jun 10, 2013

Author: spectroscopyNOW

The UV absorption and electronic circular dichroism (ECD) spectra of (R)- and (S)-nicotine and (S)-nornicotine in aqueous solution were measured to a significantly lower wavelength range than previously reported, allowing the identification of four previously unobserved electronic transitions.

Read More thumbnail image: Journal Highlight Spectroscopic studies on nicotine and nornicotine in the UV region
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