Search results for "CHEMOSENSOR"
showing 10 items of 41 documents
Rare Crystal Structure of Open Spirolactam Ring along with the Closed-Ring Form of a Rhodamine Derivative : Sensing of Cu2+ Ions from Spinach
2019
Crystal structures of a rhodamine derivative in its closed and open spirolactam ring forms were developed, which allows selective and sensitive detection of Cu2+ ions at a micromolar range in neutral medium. The chemosensing properties of the probe through a pentacoordinate Cu2+ ions were proven by spectroscopic and theoretical analysis. The spirolactam ring opening as the Cu2+selective sensor was applied to spinach (Spinacia oleracea) to estimate the accumulation of copper as copper(II) in the plant. peerReviewed
Efficient two-step synthesis of water soluble BODIPY–TREN chemosensors for copper(II) ions
2017
Two simple fluorescent sensors for Cu(II) ions were synthesized in two reaction steps, using recently developed C–H functionalization reactions for boron dipyrrins, starting from a standard 8-aryl-BODIPY dye and a tris(2-aminoethyl)amine (TREN) ligand. At pH 5, the resulting BODIPY–TREN conjugates are demonstrated to be promising, highly selective, water soluble, Cu(II) sensors that can permeate the cell membrane. crosscheck: This document is CrossCheck deposited related_data: Supplementary Information identifier: Bram Verbelen (ORCID) identifier: Wim Dehaen (ORCID) copyright_licence: The Royal Society of Chemistry has an exclusive publication licence for this journal copyright_licence: Thi…
Nerve agent simulant detection by using chromogenic triaryl methane cation probes
2012
Two triaryl methane cations have been used as probes for colorimetric detection of nerve agent simulants. Buffered mixed aqueous solutions of 1 and 2 showed bathochromic shifts in the presence of DCNP (diethylcyanophosphonate) and DCP (diethylchlorophosphate). The colour modulation can be observed to the naked eye. Appropriate mechanisms for the recognition event are proposed. © 2012 Elsevier Ltd.
Evidence for different patterns of chemosensory alterations in the elderly population: impact of age versus dependency
2014
Evidence for different patterns of chemosensory alterations in the elderly population: impact of age versus dependency. 6. european conference on sensory and consumer research (eurosense)
A New pH-Dependent Macrocyclic Rhodamine B-Based Fluorescent Probe for Copper Detection in White Wine
2019
For efficiently measuring copper (II) ions in the acidic media of white wine, a new chemosensor based on rhodamine B coupled to a tetraazamacrocyclic ring (13aneN4CH2NH2) was designed and synthesized by a one-pot reaction using ethanol as a green solvent. The obtained chemosensor was characterized via NMR, UV and fluorescent spectra. It was marked with no color emission under neutral pH conditions, with a pink color emission under acidic conditions, and a magenta color emission under acidic conditions where copper (II) ions were present. The sensitivity towards copper (II) ions was tested and verified over Ca2+, Ag+, Zn2+, Mg2+, Co2+, Ni2+, Fe2+, Pb2+, Cd2+, Fe3+, and Mn2+, with a detection…
Design, synthesis and evaluation of chromo and fluorogenic chemosensors to detect liquid ecstasy
2022
El éxtasis líquido o gamma hidroxibutirato (GHB) es un ácido graso de cadena corta que se encuentra de manera natural en el cuerpo de los seres humanos debido a su producción mediante el metabolismo del GABA (ácido gamma aminobutírico). Hace unas décadas se empleaba en medicina como anestésico debido a su capacidad de actuar como depresor del sistema nervioso central. Conocido como oxibato de sodio, actualmente todavía es utilizado en algunos países para tratar trastornos del sueño, como la narcolepsia, el síndrome de abstinencia de personas alcohólicas o la cataplejía. No obstante, precisamente debido a esas propiedades anestésicas y sedativas, este compuesto es ampliamente en usado en agr…
Social body odors
2013
Clef UT: 000324010400049; National audience
Evolution de la perception sensorielle et des préférences alimentaires chez les personnes âgées : quel lien avec le statut nutritionnel ?
2012
Le processus de vieillissement, même lorsqu’il se déroule normalement, est associé à de nombreuses modifications d’ordre physiologiques (ralentissement du transit intestinal, du métabolisme basal, perte de dents, altérations des capacités chimiosensorielles), psychologiques (solitude, dépression, démence) et sociologiques (retraite, veuvage, déménagement…) susceptibles d’avoir un impact sur la prise alimentaire et le statut nutritionnel de la personne âgée. Au-delà de ces changements, l’apparition d’une dépendance pour l’alimentation, qui fait généralement suite à une perte d’autonomie de la personne (apparition d’une incapacité physique ou psychique, veuvage…), modifie en profondeur le rap…
Impact of ageing on chemosensory capacities: Evidence for the existence of different patterns of alteration
2012
This study is part of AUPALESENS - Improving pleasure of elderly people for better aging and for fighting against malnutrition; Impact of ageing on chemosensory capacities: Evidence for the existence of different patterns of alteration. 16. international symposium on Olfaction and taste (ISOT)
Le déclin de la perception sensorielle des personnes âgées cache une grande variabilité : est-il lié aux préférences alimentaires et au statut nutrit…
2012
Le déclin de la perception sensorielle des personnes âgées cache une grande variabilité : est-il lié aux préférences alimentaires et au statut nutritionnel ?. Le Sensolier, 10. journée : Des différences de perception entre individus