A Mini Review on Organic Chemosensors for Cation Recognition (2013-19)

A Schiff‐Base Molecular Keypad LockandTurn‐On Sensor for Selective Detection of Fe3+ with INHIBIT Logic Behaviour

“…Analytical Data: Shiny yellow coloured solid, yield: 91 %, melting point: 302-303 °C, Solubility: absolute alcohol, 1 S1a-d).…”

“…In the recent years, a significant attention is drawn to conceive resourceful fluorogenic sensors which are capable for specific recognition and effective detection of various analytes such as ionic, neutral or molecular species owing to their biological as well as to the environmental importance. [1][2][3][4] However, out of numerous chemosensors, colorimetric and fluorogenic sensors are known to have more advantages. It is because these are exceptionally sensitive, lucrative, versatile and provide high spatial resolution with even micronic level visualisation.…”

Chalcogen Bonding Ion‐Pair Cryptand Host Discrimination of Potassium Halide Salts

“…The plethora of roles that charged species play in biological, environmental and technological spheres has resulted in the burgeoning field of supramolecular host-guest chemistry, which focuses on the construction of synthetic receptors for the selective recognition and sensing of a vast array of cationic and anionic species. [1][2][3] However, necessarily implicated in the recognition of a given charged species is the presence of its counterion(s), which has been demonstrated to dramatically affect the binding behaviour of monotopic host systems. Heteroditopic receptors, incorporating both cation and anion binding sites, are capable of exploiting this interplay between co-bound ion-pairs, enhancing the efficacy of charged guest recognition via favourable intramolecular electrostatic interactions and conformational allosteric cooperativity, relative to monotopic analogues.…”

“…The plethora of roles that charged species play in biological, environmental and technological spheres has resulted in the burgeoning field of supramolecular host‐guest chemistry, which focuses on the construction of synthetic receptors for the selective recognition and sensing of a vast array of cationic and anionic species [1–3] . However, necessarily implicated in the recognition of a given charged species is the presence of its counterion(s), which has been demonstrated to dramatically affect the binding behaviour of monotopic host systems.…”

Bicolour fluorescent molecular sensors for cations: design and experimental validation

“…6,7 However, flurorescence 8 is perhaps the most frequently used because of the relative simplicity of the associated devices, its very high sensitivity and its excellent spatial and temporal resolution. [9][10][11][12][13][14][15] Since in many samples different metal cations can coexist, the corresponding sensors must exhibit high selectivity. In this respect, fluorescent sensing arrays have been developed as a useful alternative based on ensembles of different less selective sensors that exhibit characteristic responses for different analytes.…”