Squaraine-Based Optical Sensors: Designer Toolbox for Exploring Ionic and Molecular Recognitions

Small molecule-based chromogenic and fluorogenic probes play an indispensable role in many sensing applications. Ideal optical chemosensors should provide selectivity and sensitivity towards a variety of analytes. Synthetic accessibility and attractive photophysical properties have made squaraine dy...

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Bibliographic Details
Published in:Chemosensors 2021-11, Vol.9 (11), p.302
Main Authors: Ta, Daniel D., Dzyuba, Sergei V.
Format: Article
Language:English
Subjects:
absorbance
Acids
aggregation
chelate
Chemical sensors
Chemoreceptors
Design
fluorescence
Optical measuring instruments
Selectivity
Sensors
Solvents
squaric acid
squarylium
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Summary:Small molecule-based chromogenic and fluorogenic probes play an indispensable role in many sensing applications. Ideal optical chemosensors should provide selectivity and sensitivity towards a variety of analytes. Synthetic accessibility and attractive photophysical properties have made squaraine dyes an enticing platform for the development of chemosensors. This review highlights the versatility of modular assemblies of squaraine-based chemosensors and chemodosimeters that take advantage of the availability of various structurally and functionally diverse recognition motifs, as well as utilizing additional recognition capabilities due to the unique structural features of the squaraine ring.
ISSN:2227-9040
2227-9040
DOI:10.3390/chemosensors9110302