UV/Vis Spectroscopy / Ezine
Journal Highlight: Determination of the anti-viral drug Ribavirin in dosage forms via micelle-enhanced spectrofluorimetric method
Date: May 7, 2013
Author: spectroscopyNOW
A simple and sensitive spectrofluorimetric method was developed for the determination of Ribavirin in pharmaceutical formulations, based on its fluorescence spectral behaviour in a sodium dodecyl sulfate micellar system.
Read More
Sweet red wine: Ultraviolet exposure
Date: May 1, 2013
Author: David Bradley
UV-Vis spectroscopy has been used for the first time to study phenolics and other compounds present in a type of sweet, red wine emerging from the North West of Spain. The approach could be used to study the components of other beverages too as well as offering quality analysis (QA) data on produce.
Read More
Journal Highlight: Visible and near infrared fluorescence spectral flow cytometry
Date: Apr 8, 2013
Author: spectroscopyNOW
Spectral flow cytometry instruments, software and experimental design that allow spectral flow cytometry to be integrated with conventional flow cytometry approaches are described and several near infrared emitting fluorophores are evaluated.
Read More
Chlorophyll f: UV sheds some light on infrared molecule
Date: Apr 1, 2013
Author: David Bradley
Chlorophyll f is the most red-shifted natural chlorophyll and is made by the blue-green alga Halomicronema hongdechloris. Researchers have now carried out a structural assignment UV-Vis spectroscopy and other techniques. New insights into chlorophyll and its variants is important for understanding photosynthesis as well as for research into energy conversion, electron transfer applications.
Read More
Journal Highlight: Donor-substituted distyrylpyrazines: influence of steric congestion on UV–Vis absorption and fluorescence
Date: Mar 11, 2013
Author: spectroscopyNOW
The effects of large substituents on the amino groups in novel synthetic linear 2,5-distyrylpyrazines on steric congestion have been studied by UV–Vis absorption and fluorescence spectroscopy.
Read More
Isotopic analysis: Solar system revelations
Date: Mar 1, 2013
Author: David Bradley
Researchers have used UV beamline studies and other techniques to analyse the origins of different isotope ratios among the chemical elements that make up the planets, moons, comets and asteroids, as well as the interplanetary ice and dust in our solar system. Their studies could provide new insights as to how the solar system evolved and what might be its ultimate fate.
Read More
Journal Highlight: Thousand-fold enhancement of single-molecule fluorescence near a single gold nanorod
Date: Feb 11, 2013
Author: spectroscopyNOW
Large enhancements of single-molecule fluorescence up to 1100 times have been achieved using synthesised gold nanorods by selecting a dye with its absorption and emission very close to the surface plasmon resonance of the nanorods.
Read More
Tanned: Ion channel clues to UV protection
Date: Feb 1, 2013
Author: David Bradley
Skin cells known as melanocytes can sense ultraviolet light and increase production of melanin - tanning - in the skin to protect themselves and the tissues below. New research reveals that a well-studied and chemically sensitive ion channel found in cells elsewhere in the body plays a central role in "detecting" incident ultraviolet.
Read More
Journal Highlight: First in situ optical emission spectroscopy measurements during cesium low-energy depth profiling
Date: Jan 14, 2013
Author: spectroscopyNOW
In situ optical emission spectroscopy measurements have been carried out on a time of flight SIMS instrument by measuring the light emission from the sputtered area.
Read More
Strong test for FUR: Spectral stimulant
Date: Jan 7, 2013
Author: David Bradley
A new spectroscopic method has been developed for the determination of the drug furosemide used to treat congestive heart failure and other conditions.
Read More
