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Temperature Dependent Triplet States of Benzophenone; Spectral and Lifetime Measurements Utilising Transient Absorption Spectroscopy

In this application note, we demonstrate how transient absorption spectroscopy and temperature-dependent measurements can be employed to investigate and understand the nature of photoexcited triplet states of a molecule.


Optimisation of SERS for Glucose Sensing

Surfaced enhanced Raman scattering (SERS) is an enhancement technique in which nanoparticles are used to provide Raman intensity enhancement. In this application note the optimisation of gold nanoparticles are investigated for the development of a SERS glucose sensor.


Application Note: Measuring Picosecond Fluorescence Lifetimes Using the FLS1000 Equipped with a Hybrid Photodetector

In this application note, the measurement of sub 20 picosecond lifetimes utilising the FLS1000 Photoluminescence Spectrometer equipped with a hybrid photodetector is demonstrated, and the impact that the configuration of the FLS1000 has on the minimum lifetime that can be measured is discussed.


Measuring the Two-Photon Absorption Spectra of Organic Solutions Via Two-Photon Induced Fluorescence Spectroscopy

This customer written application note describes how to measure the two-photon absorption spectra of fluorescent chromophores by using an external short-pulsed laser source in an Edinburgh Instruments FS5 Spectrofluorometer. A procedure on how to calculate the nonlinear refraction dispersion from the measured spectra is also given.


Metal Organic Framework as a Ratiometric Fluorescence Sensor for Hypochlorite and Ascorbic Acid

Researchers in Fujian, China, led by Rong Cao and Zu-Jin Lin, have developed a new method for sensing ClO- employing fluorescence spectroscopy and novel metal organic frameworks. The authors used an Edinburgh Instruments FS5 Spectrofluorometer to characterize and optimise the sensor’s response towards ClO- . They then employed this sensor to detect ascorbic acid, an essential nutrient for the human body.


Emission Tail of Indium Phosphide Quantum Dots Investigated using the FS5 Spectrofluorometer

Semiconductor quantum dots (QDs) have unique tuneable photoluminescence properties which lend them to a range of important technological applications including solid-state lighting, displays, photovoltaics, and biomedical imaging. Indium phosphide (InP) QDs have attracted significant interest as an environmentally friendly and non-toxic alternative to traditional heavy metal based QDs containing cadmium and lead.


Understanding the Light-Harvesting Photosystem II; Utilising Transient Absorption to Study a Molecular Triad’s Photoinduced Electron Transfer Reactions

The ability of plants to live, thrive and survive on sunlight provides unsurpassed motivation to understand and mimic this process for solar energy production. In this application note, Edinburgh Instrument's LP980 Transient Absorption Spectrometer is used to measure energy and electron transfer events.


Elucidating Photocatalysis Mechanisms using Transient Absorption; Energy and Electron Transfer in Ni-Amine Complexes for C-N Cross-Coupling Reactions

Light-driven photocatalytic reactions are featured prominently across all fields of science, from the energetically uphill processes of photosynthesis in plants, to water-splitting solar fuels, and even disinfection of water, and improving synthetic reactions.


Kinetics of Photocatalysis Reactions Studied by Transient Absorption Spectroscopy

Photocatalysis is the rate increase of a chemical reaction by light, often in the presence of a catalyst that starts the reaction upon irradiation. Photocatalysts are typically semiconducting metal oxides such as ZnO, Fe2O3 or TiO2 which are employed as particles in solution. When absorbing light, these materials are able to generate electrons and holes which go on to react with chemical species on their surface. Find out how our LP980 Spectrometer was used in this recent application note.


Fluorescence, Delayed Fluorescence and Phosphorescence Spectra of a TADF Emitter Measured using the FLS1000 with a VPL laser and Gated PMT Detector

Materials exhibiting thermally activated delayed fluorescence (TADF) have attracted widespread research attention as a new generation of high-efficiency emitters for use in Organic Light Emitting Diodes (OLEDs). In a TADF OLED, triplet excitons are converted to singlet excitons through a thermally assisted reverse intersystem crossing which enables internal quantum efficiencies of 100% to be achieved.1