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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.

Read More thumbnail image: Bond Q and controlled cleavage

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.

Read More thumbnail image: In vivo fluorescence imaging a personal perspective

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.

Read More thumbnail image: White light microscope

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.

Read More thumbnail image: A novel assay based on fluorescence microscopy and image processing for determining phenotypic distributions of rod-shaped bacteria

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.

Read More thumbnail image: Ammonia caught on film

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.

Read More thumbnail image: 2-Phenanthrenyl-DNA synthesis pairing and fluorescence properties

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.

Read More thumbnail image: Reversibly colourful swell gel

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.

Read More thumbnail image: COD Evaluation of hospital effluent by means of UV-spectral deconvolution

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.

Read More thumbnail image: Battery capacity is full of holes

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.

Read More thumbnail image: Specific detection and quantification of mycobacteria in metalworking fluids by fluorescence-based methods
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