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Journal Highlight: Perspectives of unicolored phosphor‐sensitized fluorescence

Date: Sep 10, 2019

Author: spectroscopyNOW

A multiscale model of a blue organic light emitting diode based on unicolored phosphor‐sensitized fluorescence has been developed, showing that appropriate material design can improve efficiency by more than 30% and extend operational lifetimes.

Read More thumbnail image: Journal Highlight Perspectives of unicolored phosphorsensitized fluorescence

Planetary heavy metal: Ultraviolet vision

Date: Sep 1, 2019

Author: David Bradley

An ultraviolet study reveals the spectral signatures of heavy elements, specifically magnesium and iron far away from a distant planet, suggesting that these elements and perhaps others are leeching from the planet's atmosphere rather than forming vaporized heavy metal clouds.

Read More thumbnail image: Planetary heavy metal Ultraviolet vision

Journal Highlight: Novel rhodamine B and 2H‐benzo[b][1,4]oxazin‐3(4H)‐one‐derived fluorescent sensor for low pH value detection

Date: Aug 7, 2019

Author: spectroscopyNOW

The colour variation of a new fluorescent probe fusing the rhodamine B scaffold with the 2H‐benzo[b][1,4]oxazin‐3(4H)‐one moiety has shown that it can be used as a low‐cost optical sensor for the naked eye detection of protons in Britton–Robinson buffer.

Read More thumbnail image: Journal Highlight Novel rhodamine B and 2Hbenzob14oxazin34Honederived fluorescent sensor for low pH value detection

Green silver nanoparticles: UV characterisation

Date: Aug 1, 2019

Author: David Bradley

Silver nanoparticles can be synthesised in a relatively environmentally benign manner using the plant lesser galangal, Alpinia officinarum, a member of the ginger family. The particles were characterised by UV-Vis spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction, transmission electron microscopy (TEM), and Selected area electron diffraction (SAED).

Read More thumbnail image: Green silver nanoparticles UV characterisation

Journal Highlight: A novel luminescent probe enables ratiometric optical detection of Hg(II) and TURN‐ON fluorescent sensing of Cu(II)

Date: Jul 11, 2019

Author: spectroscopyNOW

A simple thiourea derivative has been reported that detects Cu(II) in a turn‐on fashion via a chemodosimetric redox reaction leading to oxidative cyclization of the chemosensor molecule, and which also detects Hg(II) discernable to the naked eye.

Read More thumbnail image: Journal Highlight A novel luminescent probe enables ratiometric optical detection of HgII and TURNON fluorescent sensing of CuII

Juiced up: UV-Vis and NIR for fruit testing

Date: Jul 1, 2019

Author: David Bradley

Ultraviolet-visible (UV-Vis) and near infrared (NIR) spectroscopy can be used to non-destructively test the quality of strawberries and strawberry juice. The techniques could be used in the fruit juice industry to sort stock prior to processing to allow different quality juices to be formulated.

Read More thumbnail image: Juiced up UV-Vis and NIR for fruit testing

Journal Highlight: Fluorescence based platform to discriminate protein using carbon quantum dots

Date: Jun 12, 2019

Author: spectroscopyNOW

A theoretical and experimental study based on carbon quantum dots and metallic ions has been devised for distinguishing proteins by their fluorescence patterns and supported by pattern recognition using linear discriminant analysis.

Read More thumbnail image: Journal Highlight Fluorescence based platform to discriminate protein using carbon quantum dots

Quenching TNT: UV detector

Date: Jun 1, 2019

Author: David Bradley

Ultraviolet-visible (UV-Vis) spectroscopy and fluorescence spectroscopy have been used to test the mettle of two novel fluorescent anthracene-decorated cyclotri- and cyclotetra-phosphazenes in detecting nitroaromatic compounds. Critically, the fluorescence intensities of both compounds are demonstrated to be quenched selectively only by the explosive compound 2,4,6-trinitrotoluene.

Read More thumbnail image: Quenching TNT UV detector

Journal Highlight: Luminescence properties of novel Eu3+‐doped tantalate NaCaTiTaO6 red‐emitting phosphors for solid‐state lighting

Date: May 9, 2019

Author: spectroscopyNOW

Novel tantalate red‐emitting phosphors NaCa1‐xEuxTiTaO6 have been synthesised and characterised as substitute red phosphors for white light‐emitting diodes.

Read More thumbnail image: Journal Highlight Luminescence properties of novel Eu3doped tantalate NaCaTiTaO6 redemitting phosphors for solidstate lighting

Chaos on a grand scale: Extreme ultraviolet

Date: May 1, 2019

Author: David Bradley

Simulations of laser-plasma coupling mechanisms has been opened up by a new three-dimensional particle-in-cell (PIC) tool. Data from extreme-ultraviolet spectroscopy in tests can be underpinned by this new tool and simulation.

Read More thumbnail image: Chaos on a grand scale Extreme ultraviolet
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