What is a chemosensor?
A chemosensor (molecular sensor) is a molecule that interacts with a specific analyte to produce a detectable change. Molecular sensors exhibit molecular recognition properties or undergo analyte-specific reactions that are then reflected in a signal.
What is fluorescent chemosensor?
Compounds incorporating a binding site, a fluorophore, and a mechanism for communication between the two sites are called fluorescent chemosensors. If the binding sites are irreversible chemical reactions, the indicators are described as fluorescent chemodosimeters.
What is a detector molecule?
Single molecule detection is a powerful technology which bypasses ensemble averaging and provides direct information and behavior (i.e., kinetics and dynamics) of single molecules. From: Spectroscopy of Polymer Nanocomposites, 2016.
What are biosensors used for?
Biosensors are used to check the quality of air and water. The devices can be used to pick up traces of organophosphates from pesticides or to check the toxicity levels of wastewater, for example.
What is chelation enhanced fluorescence?
When the nitrogen forms a chelate ring with Zn2+, the metal complex is over 1000-times more fluorescent than the free ligand. 3 This effect is referred to as the Chelation Enhanced Fluorescence (CHEF) effect.
How does a molecular sensor work?
A molecular sensor, also known as a chemosensor or probe, is a molecular or supramolecular-based system that is able to transform probe–analyte interactions into a signal which allows analyte sensing. The most common output signals are usually optical or electrochemical changes.
What is the simplest molecule?
Hydrogen gas is the simplest and smallest possible molecule. Oxygen gas requires a double bond. Carbon dioxide requires two double bonds.
What is biosensors in simple words?
A biosensor is defined as a device that produces a measurable signal proportional to the concentration of the target analyte, usually incorporating a biological sensing element and measuring signals derived from biological interactions (Turner, 2013).
What is an example of fluorochrome?
Examples of fluorochromes used in the detection of art materials are: Berberine sulfate, Acridine orange, Acridine yellow, Auramine O, Blancophor R, Cycloheptaamylose dansyl chloride, Dichlorofluorescein, Fluorescein isothiocyanate, Lissamine Rhodamine B Sulfonyl Chloride, Primuline, Pyronine Y, Rhodamine B, Rosaniline …
What is the meaning of fluorochrome?
Definition of fluorochrome : any of various fluorescent substances used in biological staining to produce fluorescence in a specimen.