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Infrared Spectroscopy

A new method was developed to quantify the water absorption kinetics and the mass transfer in a polymer solution while it is exposed to a humid atmosphere, using near-IR spectroscopy and partial least-squares models.

Water molecules continuously form short-lived clusters that can be rapidly protonated in the liquid state. Now, computer simulations revealed how protonated water clusters interact with nearby messenger molecules, which are required to measure their geometrical structures and the chemical properties by IR spectroscopy.

A protocol was presented for the high-throughput microcultivation and spectral characterization of fungi by Fourier transform infrared spectroscopy and applied to the study of 11 species in a total five different fungal genera.

Infrared spectroscopic data from the planetary nebula Tc 1 in the southern constellation Ara has now revealed convincing evidence that the fullerenes, C60 and C70, are present in large quantities in cosmic dust.

Near infrared chemical imaging and chemometric data analysis were used to study hydration behaviors of prolonged release tablets, which contain a high solubility drug at high load and a hydrophilic polymer hydroxypropylmethylcellulose (HPMC).

An astronomical infrared study reveals one of the most complex organic molecules yet found in the interstellar medium - anthracene - offering possible new clues to the way the building blocks of life might have emerged.

FTIR spectrometry was used to provide an alternative mechanism for tracking metabolic changes in the meristems of kiwifruit buds during winter dormancy.

Heating rice flour to 600 Celsius under a nitrogen atmosphere is not the usual way to cook it, but researchers in India have done just that. The product, rather than a bowl of light and fluffy grains is a plethora of nanoscopic carbon cubes and bricks, the team says

Current Fourier transform infrared imaging spectroscopy methods for the determination of depthwise proteoglycan content in articular cartilage were evaluated.

Scientists have reported the discovery of what may be the "ancestral Eve" crystal that billions of years ago gave life on Earth its curious and exclusive preference for so-called left-handed amino acids. Fourier transform IR spectroscopy and powder X-ray diffraction provide the evidence.

A portable IR device that can quickly and easily determine the strength of alcoholic drinks proves more effective than laboratory-based FTIR spectroscopy. The device could be useful in law enforcement and in industry fraud.

Infrared radiation was used to increase the curing rate of linseed and tung oils and FTIR spectroscopy was used to monitor the chemical changes during oil oxidation.

Organisms use ATP as a universal energy storage molecule, now carbon nanotubes, modified with luciferase, have been used as near-infrared detectors for cellular ATP. The work has potential for studies of ischaemia, Parkinson's disease, hypoglycaemia and more.

A fast, versatile, inexpensive and environmentally safe analytical method was developed to quantify simple sugars, malic acid and total phenolic compounds in apple pomace, considering its potential use as a raw material with value instead of as an industrial waste.

Anomalies in the spectra of the aromatic planar molecule coronene can be explained with powerful calculations on infrared and Raman spectroscopic data. The evidence suggests that minute out-of-plane molecular distortions from D(6h) to C(2h) symmetry are the underlying cause.

This study describes near infrared spectroscopy to examine platelets inoculated with low concentrations of <em>Bacillus cereus</em> and <em>Staphylococcus epidermidis</em>, comparing with sterile bags.

An improved detection method was described for reverse-phase protein arrays combining near-infrared fluorescence with one or two rounds of tyramide-based signal amplification.

It won't necessarily be music to the classical purist's ear, but chemists have been instrumental in revealing the secret beneath the varnish on a Stradivari violins, and the secret is: there is no secret.

The appropriateness of near-infrared reflectance spectroscopy for the estimation of stable isotope ratios for nitrogen and carbon of plant tissues has been demonstrated on seven bog species from Patagonia.

Microwave waveguides on a diamond-based chip can generate a magnetic field large enough to change the quantum state of an atomic-scale defect in less than one billionth of a second, emulating the process involved in magnetic resonance imaging and potentially leading to a new approach to quantum computing.