Anion sensing with chemosensors having multiple NH recognition units

• Published in: TrAC, Trends in analytical chemistry (Regular ed.) Vol. 95; pp. 86 - 109
• Main Authors: Kaur, Navneet, Kaur, Gaganpreet, Fegade, Umesh A., Singh, Amanpreet, Sahoo, Suban K., Kuwar, Anil S., Singh, Narinder
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2017
• Subjects: Anions; Hydrogen bonding; Ion-pairs; Sensor; Urea/thiourea derivatives; Ion-pairs; Anions; Urea/thiourea derivatives; Hydrogen bonding; Sensor
• ISSN: 0165-9936; 1879-3142
• DOI: 10.1016/j.trac.2017.08.003

The pursuit of efficient schemes for recognition of physiologically and environmentally important analytes has led to extensive development in the field of supramolecular chemistry. Among various analytes, anions play a fundamental role in many biological processes. However, designing of functional chemosensors for recognition of anions is a major challenge owing to different parameters such as larger size and varying geometries. This review is focused on the development of chemosensors containing NH-binding sites for application in anion sensing and discusses the variation in selectivity as a consequence of structural modification. The mechanism of action for recognition of different anions has also been provided. [Display omitted] •Applications of urea based organic molecules and organic nanoparticles for anion sensing using multiple NH recognition units.•Different mechanism associated with the sensing of ions by using functionalized organic nanoparticles and organic molecules.•Understand the different sensing mechanisms with selected examples.•Understanding of anion induced changes in photophysical properties.