Results 51 to 60 of about 12,447 (227)

A ratiometric Al³⁺ ion probe based on the coumarin-quinoline FRET system [PDF]

open access: yes, 2016
A coumarin-quinoline based fluorescence resonance energy transfer (FRET) system (TCQ) has been synthesized and employed as a ratiometric fluorescence probe.
Li, Li   +5 more
core   +1 more source

Alkyl substituted cucurbit[6]uril assisted competitive fluorescence recognition of lysine and methionine in aqueous solution [PDF]

open access: yes, 2017
The use of competitive ratiometric fluorescence indicator displacement chemosensors derived from two alkyl substituted cucurbit[6]uril-based host-guest complexes is reported.
Bai, Qinghong   +8 more
core   +1 more source

A Novel Method for the Pre-Column Derivatization of Saccharides from Polygonatum cyrtonema Hua. by Integrating Lambert–Beer Law and Response Surface Methodology

open access: yesMolecules, 2023
Traditional Chinese medicine (TCM) safety and effectiveness can be ensured by establishing a suitable quality assessment system. This work aims to develop a pre-column derivatization HPLC method for Polygonatum cyrtonema Hua. quality control.
Hui Liu   +5 more
doaj   +1 more source

Positive allosteric binding behavior of pyrene-appended triazole-modified thiacalix[4]arene-based fluorescent receptors [PDF]

open access: yes, 2014
The novel heteroditopic receptors 5a∼c have been synthesized, which bear a thiacalix[4]arene in the 1,3-alternate conformation. Two urea moieties possessing various aryl groups with either electron-donating or -withdrawing groups at their p-positions ...
Ni, Xin-Long   +5 more
core   +2 more sources

Capacitive Pixelated CMOS Electronic Nose

open access: yesAdvanced Electronic Materials, EarlyView.
A 1024‐pixel CMOS capacitive E‐nose with inkjet‐printed MOFs and polymer layers yields gas‐specific capacitance fingerprints under humid conditions, discriminating toluene from 2‐butanone at low power. ABSTRACT Although some of the human senses can nowadays be replaced by low‐cost electronic sensors such as microphones and image sensors, a compact low ...
M. A. Basyooni‐M. Kabatas   +7 more
wiley   +1 more source

Self-assembly of multi-component fluorescent molecular logic gates in micelles [PDF]

open access: yes, 2016
A recent strategy for developing supramolecular logic gates in water is based on combinations of molecules via self-assembly with surfactants, which eliminates the need for time-consuming synthesis. The self-assembly of surfactants and lumophores and
Costa, Paola F. da   +2 more
core   +1 more source

Visualisation of DCP, a nerve agent mimic, in Catfish brain by a simple chemosensor

open access: yesScientific Reports, 2018
A chemosensor, 3-aminophenol-based rhodamine conjugate (ARC) has been developed for visualisation of diethylchlorophosphate (DCP), mimic of a chemical warfare agent, in Catfish brain.
Himadri Sekhar Sarkar   +6 more
doaj   +1 more source

A novel fluorescence “on–off–on” chemosensor for Hg²⁺ via a water-assistant blocking heavy atom effect [PDF]

open access: yes, 2016
Upper rim pyrene-functionalized hexahomotrioxacalix[3]arene L was synthesized via Click chemistry, and its fluorescence behaviors toward several common metal cations were investigated.
Jiang, Xue-Kai   +7 more
core   +2 more sources

Optical Chemosensors and Biosensors [PDF]

open access: yesChemosensors, 2020
The field of chemo- and biosensors, ranging from biomedical/clinical applications to environmental applications and food analyses, has been growing in the last two decades [...]
Giannetti Ambra, Bockova Marketa
openaire   +2 more sources

Development of a Low-Cost UV-Vis Spectrophotometer and Its Application for the Detection of Mercuric Ions Assisted by Chemosensors

open access: yesSensors, 2020
Detection of an environmental contaminant requires the use of expensive measurement equipment, which limits the realization of in situ tests because of their high cost, their limited portability, or the extended time duration of the tests.
David González-Morales   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy