UV/Vis Spectroscopy / Ezine
A life-extending molecule to dye for: fluorescent revelations
Date: Apr 1, 2011
Author: David Bradley
Worms live longer if protein homeostasis is maintained by adding a dye molecule to their diet, according to new study. The dye molecule Thioflavin T precludes the kind of protein misfolding that, in humans, leads to aging effects and Alzheimer's disease.
Read More
Journal Highlight: Optical properties of modified epoxy resin with various oxime derivatives in the UV-VIS spectral region
Date: Mar 14, 2011
Author:
Optical absorbance measurements have been performed on an epoxy resin and the composites prepared by its modification with two different oxime derivatives (benzaldoxime and 2-furaldoxime) at 190-680 nm by unpolarized light and the data have been used to determine various optical properties.
Read More
It's in the brew: coffee antioxidants formed by roasting
Date: Mar 1, 2011
Author: David Bradley
UV-Vis spectroscopy and fluorescence studies reveal that the antioxidants in coffee with the most potent assumed health benefits are formed by the roasting of beans rather than being present in the raw green beans. The results are reported in detail in the journal Food Research International.
Read More
Journal Highlight: Two-photon fluorescence real-time imaging on the development of early mouse embryo by stages
Date: Feb 7, 2011
Author:
Early mouse embryo development from zygote to 8-cell stage compaction was observed in real-time by stages using two-photon laser scanning microscopy, optimizing several scanning parameters in different development stages.
Read More
Caffeine stacks up against cancer: UV-Vis reveals mechanism
Date: Feb 1, 2011
Author: David Bradley
Methylxanthine alkaloids, such as caffeine, have been implicated as a risk factor in several forms of cancer. Now, UV-vis spectroscopy and other techniques have been used to reveal a possible mechanism that demonstrates they may have the opposite activity - protecting us from aromatic mutagens and carcinogens by stacking up and blocking their detrimental activity.
Read More
Journal Highlight: Optical spectroscopy of bilayer graphene
Date: Jan 10, 2011
Author:
Infrared spectroscopy reveals unusual tunable electronic structure and optical behaviour in electrically gated bilayer graphene in which a unique tunable bandgap can lead to many new physical phenomena.
Read More
Well structured: pyrrole as building block for soft materials
Date: Jan 5, 2011
Author: David Bradley
Japanese scientist Hiromitsu Maeda of Risumeikan University and his colleagues have turned to the well-known molecular motif of the pyrrole to make a new class of structured materials. By combining planar pyrrole-containing negatively charged complexes with similarly planar, positively charged organic ions they can generate fibres and soft materials, such as supramolecular gels and liquid crystals based on these organic salts.
Read More
Journal Highlight: Photoluminescence of single-wall carbon nanotube films
Date: Dec 6, 2010
Author:
Photoluminescence studies of films produced by different methods from pristine single-wall carbon nanotubes (SWNTs) were studied by optical diagnostic techniques including Raman spectroscopy, UV-VIS-NIR absorption spectroscopy and photoluminescence.
Read More
One for the vine: testing tannins with absorption measurements
Date: Dec 1, 2010
Author: David Bradley
At Christmas time, there's no need to be afraid...of testing your tannins at least now that US researchers have developed a sensor capable of discriminating between the different tannins present in red wine. The sensor could be used to fingerprint a wide variety of red wines with a view to confirming provenance and authenticity.
Read More
Journal Highlight: Fluorescent whole-mount method for visualizing three-dimensional relationships in intact and regenerating adult newt spinal cords
Date: Nov 15, 2010
Author:
A method was developed for visualizing the cellular and molecular events during newt spinal cord regeneration in whole-mount preparations using fluorescent probes (streptavidins and antibodies) and confocal microscopy.
Read More
