UV/Vis Spectroscopy / Ezine
Bond, Q, and controlled cleavage
Date: Apr 1, 2009
Author: David Bradley
US chemists have made an iron catalyst that can be used to rapidly break strong carbon-hydrogen bonds within molecules, up to one thousands times faster than other methods. The research could solve one of the great chemical challenges.
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In vivo fluorescence imaging: a personal perspective
Date: Mar 9, 2009
Author:
In this review of in vivo fluorescence imaging with NIR light, the use of polymersomes for the incorporation and delivery of large numbers of highly emissive oligo (porphyrin)-based, organic NIRFs is discussed.
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White light microscope
Date: Mar 1, 2009
Author: David Bradley
Silver nanoparticles that can generate white light could improve microscopy in research into cancer and bone diseases according to a paper in the March issue of Nano Letters.
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A novel assay based on fluorescence microscopy and image processing for determining phenotypic distributions of rod-shaped bacteria
Date: Feb 9, 2009
Author:
A novel assay combining fluorescence microscopy and image processing has been developed to determine the phenotypic distributions of the overall cell population, the dividing cell subpopulation and the newborn cell subpopulation of rod-shaped bacteria.
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Ammonia caught on film
Date: Feb 1, 2009
Author: David Bradley
A sensor based on novel electroconducting polymer composite films, characterised with UV-vis spectroscopy, reveals rapid sensitivity to ammonia on a par with conventional PANI sensors as measured by optical absorption changes.
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2-Phenanthrenyl-DNA: synthesis, pairing, and fluorescence properties
Date: Jan 12, 2009
Author:
Three 2'-phenanthrenyl-C-deoxyribonucleosides with donor, acceptor, or no substitution on the phenanthrenyl core were synthesized and incorporated into oligodeoxyribonucleotides and they were studied by UV melting analysis and fluorescence spectroscopy.
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Reversibly colourful swell gel
Date: Jan 1, 2009
Author: David Bradley
Electrochemically oxidizing and reducing an inverse polymer-gel opal causes it to swell and shrink, which alters the wavelength of the light it diffracts brightly from ultraviolet through the visible to the near infrared.
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COD Evaluation of hospital effluent by means of UV-spectral deconvolution
Date: Dec 8, 2008
Author:
A deconvolution correlation was derived between the COD values of effluent samples from the Hospital of the Federal University of Santa Maria and their integrated UV-absorbances in the 285-295 nm range.
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Battery capacity is full of holes
Date: Dec 1, 2008
Author: David Bradley
Researchers in Korea have developed a novel material for the anodein rechargeable batteries, which they say could make them much more efficient and extend significantly the length of time between charges.
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Specific detection and quantification of mycobacteria in metalworking fluids by fluorescence-based methods
Date: Nov 10, 2008
Author:
Two staining methods have been adapted and evaluated for the detection/quantification and differentiation (viable vs non-viable) of metalworking fluid-associated mycobacteria and the background bacterial flora.
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