Naphthalene-glycine conjugate: An extremely selective colorimetric chemosensor for iodide ion in aqueous solution

Recent Advances in Luminescent Recognition and Chemosensing of Iodide in Water

“…Notable examples that operate in 100% water include fluorescent receptors containing an arrays of hydrogen bond donors such as NÀ H, [62][63][64][65] CÀ H, [66][67][68][69][70] and boronic acids (BÀ OH) [71] able to bind iodide through (DÀ H … I À ) ionic interactions.…”

“…Among those reported with NÀ H groups (Figure 6), the most efficient are calixarenes 14, [72] naphthalene-glycine-derivatives 15, [62] calix [4]pyrrole 16, [64] bisquinolinium salts 17-19, [63] donor-aceptor thiourea derivative 20, [74] polyaza-macrocycle 21, [73] and benzimidazole-based tripodal receptors 22. [65] A calix [3]arene bearing pyrene moieties 14 for selective chemosensing of I À was reported by Yamato and coworkers.…”

“…A distinctive chemosensor extremely selective for I À based on a naphthaleneglycine conjugate ensemble 15 has been reported by Thakur and coworkers. [62] This sensor exhibits a color change, which represents a simple and low-cost detection method. The addition of I À to a solution of 15 led to a total quenching and this optical change allows its detection with a limit of 30 nM.…”

A pyrenyl-appended C-symmetric hexahomotrioxacalix[3]arene for selective fluorescence sensing of iodide

“…Therefore, the development of highly sensitive and selective analytical methodology for the detection of trace levels of iodide is highly demanded and of great significance. Till date, several analytical methods have been reported for the determination of iodide, such as atomic absorption spectrometry [5], microfluidic flow injection [6], colorimetry [7,8], capillary electrophoresis [9], electrochemical analysis [10,11], chromatography [12,13], mass spectrometry [14,15] and so on. However, these methods still suffer from some intrinsic disadvantages, including tedious sample preparations, time-consuming operation and sophisticated instrumentation.…”

Study of a New Hydrazone System with Ion Complexation Capacity Suitable for Selective Detection

“…This is achieved by generating a change in the electronic, conformational, or optical properties of a supramolecular structure, resulting in a chemical response translated into a signal. Colorimetric and fluorometric sensors use changes in optical properties, absorption or emission, as an output signal [1][2][3][4][5][6]. The great development that spectroscopic methods have undergone in the 20th century made it possible to have adequate analytical techniques for the translation of the signal produced in the coordination process and its subsequent interpretation.…”