Results 41 to 50 of about 198,708 (272)

Fluorescence of Alexa fluor dye tracks protein folding. [PDF]

open access: yesPLoS ONE, 2012
Fluorescence spectroscopy is an important tool for the characterization of protein folding. Often, a protein is labeled with appropriate fluorescent donor and acceptor probes and folding-induced changes in Förster Resonance Energy Transfer (FRET) are ...
Simon Lindhoud   +4 more
doaj   +1 more source

Photoluminescence and Fluorescence Quenching of Graphene Oxide: A Review

open access: yesNanomaterials, 2022
In recent decades, photoluminescence (PL) material with excellent optical properties has been a hot topic. Graphene oxide (GO) is an excellent candidate for PL material because of its unique optical properties, compared to pure graphene. The existence of
Xinzhe Xiao   +4 more
doaj   +1 more source

Reaction Mechanism Spectroscopy Studies of Protein and Orange II

open access: yesChemical Engineering Transactions, 2015
In this paper, the interaction of Orange II and Human Serum Albumin was studied by fluorescence spectroscopy under simulated physiological conditions. The affection of pigment and serum albumin may cause changes in the microenvironment.
L. Fu   +4 more
doaj   +1 more source

Diazaoxatriangulenium:synthesis of reactive derivatives and conjugation to bovine serum albumin [PDF]

open access: yes, 2016
The azaoxa-triangulenium dyes are characterised by emission in the red and a long fluorescence lifetime (up to 25 ns). These properties have been widely explored for the azadioxatrianguelnium (ADOTA) dye. Here, the syntheses of reactive maleimide and NHS-
Bogh, Sidsel Ammitzbøll   +5 more
core   +1 more source

Fluorescence quenching of naphthols by Cu2+ in micelles

open access: yesArabian Journal of Chemistry, 2014
Effect of the micelles of anionic, cationic and non-ionic surfactants on the fluorescence quenching of 1- and 2-naphthols has been studied in the presence of copper ion. The excited state lifetime, dynamic and static quenching constants for these systems
Manorama Panda, Kabir-ud-Din
doaj   +1 more source

Measurement of the pressure dependence of air fluorescence emission induced by electrons [PDF]

open access: yesAstropart.Phys.28:41-57,2007, 2007
The fluorescence detection of ultra high energy (> 10^18 eV) cosmic rays requires a detailed knowledge of the fluorescence light emission from nitrogen molecules, which are excited by the cosmic ray shower particles along their path in the atmosphere. We have made a precise measurement of the fluorescence light spectrum excited by MeV electrons in dry ...
arxiv   +1 more source

Fullerenol Quantum Dots-Based Highly Sensitive Fluorescence Aptasensor for Patulin in Apple Juice

open access: yesToxins, 2022
A highly selective and sensitive aptasensor for detecting patulin (PAT) was constructed based on the fluorescence quenching of fullerenol quantum dots (FOQDs) towards carboxytetramethylrhodamine (TAMRA) through PET mechanism. The π-π stacking interaction
Hua Pang   +9 more
doaj   +1 more source

Low-temperature quenching of one-dimensional localised Frenkel excitons [PDF]

open access: yes, 2003
We present a theoretical analysis of low-temperature quenching of one-dimensional Frenkel excitons that are localised by moderate on-site (diagonal) uncorrelated disorder.
A.V. Malyshev   +28 more
core   +3 more sources

Tryptophan Fluorescence Quenching Assays for Measuring Protein-ligand Binding Affinities: Principles and a Practical Guide

open access: yesBio-Protocol, 2019
Tryptophan fluorescence quenching is a type of fluorescence spectroscopy used for binding assays. The assay relies on the ability to quench the intrinsic fluorescence of tryptophan residues within a protein that results from changes in the local ...
Anthony Yammine, Jinlong Gao, Ann Kwan
doaj   +1 more source

Two Quenchers Formed During Photodamage of Phostosystem II and The Role of One Quencher in Preemptive Photoprotection [PDF]

open access: yes, 2019
© 2019, The Author(s). The quenching of chlorophyll fluorescence caused by photodamage of Photosystem II (qI) is a well recognized phenomenon, where the nature and physiological role of which are still debatable.
Cheah, MH   +3 more
core   +2 more sources

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