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Recent Advances in Colorimetric and Fluorescent Chemosensors for Ionic Species: Design, Principle and Optical Signalling Mechanism
Author(s) -
Dongare Pravin R.,
Gore Anil H.
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202101090
Subject(s) - förster resonance energy transfer , fluorescence , chemistry , supramolecular chemistry , intramolecular force , photoinduced electron transfer , photochemistry , ionic bonding , excimer , nanotechnology , electron transfer , ion , molecule , materials science , stereochemistry , organic chemistry , physics , quantum mechanics
Development of chemosensors for the biologically and chemically important ionic species has been an active area of research of supramolecular chemistry and received great attention because of their high sensitivity, selectivity, rapid response time and versatility. Moreover, exploration of new sensing mechanisms of interaction between recognition and signal reporting unit is of current interest. This minireview provides a detailed overview about the recent advances and developments in the field of colorimetric and fluorescent chemosensors, summarized types of optical chemosensors with their design principles and discuss various sensing mechanisms and photophysical processes like metal‐ligand charge transfer (MLCT), ligand‐metal charge transfer (LMCT), photoinduced electron transfer (PET), intramolecular charge transfer (ICT), paramagnetic fluorescence quenching, fluorescence resonance energy transfer (FRET), excited state intramolecular proton transfer (ESIPT), excimer/ exciplex formation that emerged in the past few years. Moreover, the mechanism of action of cation and anion chemosensors also summarizes in this review.