UV/Vis Spectroscopy / Ezine
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.
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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.
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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.
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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.
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An open-source deconvolution software package for 3-D quantitative fluorescence microscopy imaging
Date: Jan 11, 2010
Author:
Deconv, an open-source deconvolution software package, was developed for 3-D quantitative fluorescence microscopy imaging and was released under the GNU Public License.
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Snagging supernova spectra
Date: Jan 1, 2010
Author: David Bradley
Spectroscopy reveals that an extraordinarily bright, very long-lasting supernova named SN 2007bi, spotted in the night sky by a robotic telescope is the first example of the earliest type of star in the universe.
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An ab initio simulation of the UV/visible spectra of N-benzylideneaniline dyes
Date: Dec 7, 2009
Author:
The structural parameters and absorption spectra of more than 30 N-benzylideneaniline dyes have been determined with a theoretical scheme combining the time-dependent density functional theory and the polarizable continuum model.
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