A fluoride-selective colorimetric and fluorescent chemosensor and its use for the design of molecular-scale logic devices

Colorimetric and Fluorescent Recognition of Fluoride by a Binaphthol Thioureido Derivative

“…Except F − only can causes a small absorption change, this phenomenon can be attributed to the neutralization effect of fluoride by the strong acidic HSO 4 − ions. 23 From these results, it can be inferred that the recognition of F − by 1 is not significantly influenced by other coexisting anions except HSO 4 − , and therefore 1 exhibits a definite selectivity toward F − . In addition, to check its practical utility, the colorimetric detection limit of 1 for F − was evaluated.…”

“…During the past decade, a great number of synthetic sensors have been developed for fluoride ion detection, [10][11][12][13][14][15] however, very few of them have the advantage of dual mode of detection. [16][17][18][19][20][21][22][23][24] Among the detection mechanisms employed, the N-H deprotonation was widely used, which can induce the N-H proton transfer from the donor unit to fluoride ion. We report herein a new binaphthol based thiourea type receptor (1) for the colorimetric and fluorescent recognition of fluoride ion in acetonitrile solution.…”

Synthesis, structure and sensing behavior of hydrazone based chromogenic chemosensors for Cu2+ in aqueous environment

“…EDTA (ethylenediaminetetraacetic acid) being a good chelating agent for metal ions like Cu 2+ , can be used as inputs in some molecular logic function [32][33][34]. Here, we have introduced EDTA and Cu 2+ as stimulating inputs to study the molecular logic function with absorbance as output.…”

A novel thiosemicarbazone Schiff base derivative with aggregation-induced emission enhancement characteristics and its application in Hg2+ detection

“…Moreover, containing a sulfur moiety with a substantially coordination ability toward transition metal ions [40][41][42][43] and anions [44][45][46], thiosemicarbazone Schiff bases have an enormous potential in metal ions detection.…”