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Cometary cocktail: Lovejoy has ethanol, glycolaldehyde and other organics

Date: Nov 1, 2015

Author: David Bradley

Comet Lovejoy is releasing vast quantities of two organic compounds - ethanol and glycolaldehyde - in its wake, according to an international spectroscopic study. This is the first time ethanol has been identified in a comet and the presence of this as well as glycolaldehyde adds to the growing evidence that comets may have been the source of complex organic molecules necessary for the emergence of life on Earth.

Read More thumbnail image: Cometary cocktail Lovejoy has ethanol glycolaldehyde and other organics

Journal Highlight: Molecular recognition and visual detection of G-quadruplexes by a dicarbocyanine dye

Date: Oct 5, 2015

Author: spectroscopyNOW

The interactions of a dicarbocyanine dye, 3,3′-diethylthiadicarbocyanine, with DNA G-quadruplexes were studied by a combination of various spectroscopic techniques.

Read More thumbnail image: Journal Highlight Molecular recognition and visual detection of G-quadruplexes by a dicarbocyanine dye

Evolution plays visual leapfrog: Ultraviolet to violet

Date: Oct 1, 2015

Author: David Bradley

The African clawed frog ran an evolutionary competition with its eye's pigment molecules allowing it over the millennia to develop violet as from UV vision.

Read More thumbnail image: Evolution plays visual leapfrog Ultraviolet to violet

Journal Highlight: Combining fluorescence and bioluminescence microscopy

Date: Sep 7, 2015

Author: spectroscopyNOW

A powerful imaging tool for analysis of heterogeneous gene expression together with upstream signaling in live single cells was developed by combining fluorescence and bioluminescence microscopy.

Read More thumbnail image: Journal Highlight Combining fluorescence and bioluminescence microscopy

Military still sees red: Chlorine-free flares

Date: Sep 1, 2015

Author: David Bradley

The carmine colour of pyrotechnic flares used by the military and in maritime and civilian applications is usually generated by strontium monochloride. However, there is an urgent need to reduce chlorine use and now military research has developed a chlorine-free formulation for such flares that in some ways overturns the received wisdom that there was ever a need for a chlorine source in the first place.

Read More thumbnail image: Military still sees red Chlorine-free flares

Journal Highlight: Multicolor fluorescence writing based on host–guest interactions and force-induced fluorescence-color memory

Date: Aug 10, 2015

Author: spectroscopyNOW

A new strategy for multicolor fluorescence writing on thin solid films with mechanical forces has been illustrated by the use of a green-fluorescent pentiptycene derivative which forms variably colored fluorescent exciplexes.

Read More thumbnail image: Journal Highlight Multicolor fluorescence writing based on hostguest interactions and force-induced fluorescence-color memory

Pear review: Organic UVC cleanup

Date: Aug 1, 2015

Author: David Bradley

Some kinds of organic fruit can be scrubbed of foodborne pathogens, such as E coli and Listeria present on their surfaces using ultraviolet-C radiation, according to a new study from researchers at Washington State University.

Read More thumbnail image: Pear review Organic UVC cleanup

Journal Highlight: Nonlinear optical properties and temperature-dependent UV–Vis absorption and photoluminescence emission in 2D hexagonal boron nitride nanosheets

Date: Jul 6, 2015

Author: spectroscopyNOW

Nonlinear optical properties of 2D hexagonal boron nitride nanosheets have been reported for the first time, suggesting that it might be useful as an optical material for multiphoton bioimaging and advanced photonic devices.

Read More thumbnail image: Journal Highlight Nonlinear optical properties and temperature-dependent UVVis absorption and photoluminescence emission in 2D hexagonal boron nitride nanosheets

Coral See: UV sheds light on colourful array

Date: Jul 1, 2015

Author: David Bradley

Oceanic corals are well known for their beautiful shapes and forms, for their range of colours and for their wondrous role in submarine ecosystems. Now, ultraviolet light reveals a surprising display of colours and  fluorescence in the corals that reside on the deep water reefs of  the Red Sea. The discovery of this new beauty was made by scientists from the University of Southampton, UK, Tel  Aviv University and the Interuniversity Institute for Marine Sciences  (IUI), in Israel, and...

Read More thumbnail image: Coral See UV sheds light on colourful array

Journal Highlight: Effect of thiophene rings on UV/visible spectra and non-linear optical (NLO) properties of triphenylamine based dyes: a quantum chemical perspective

Date: Jun 8, 2015

Author: spectroscopyNOW

Density functional theory (DFT) and time-dependent DFT are used to show how the number of thiophene rings in π-conjugated systems influence the absorption spectra and non-linear optical properties of dyes.

Read More thumbnail image: Journal Highlight Effect of thiophene rings on UVvisible spectra and non-linear optical NLO properties of triphenylamine based dyes a quantum chemical perspective
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