Fluoride Triggered Fluorescence “Turn On” Sensor for Zn²⁺ Ions Based on Pentaquinone Scaffold That Works as a Molecular Keypad Lock

Abstract

A pentaquinone based compound 3a has been synthesized which exhibits pronounced fluorescence enhancement in the presence of Zn(2+) ions under a F(-) triggered synergistic effect. Derivative 3a also behaves as a molecular keypad lock with sequential chemical inputs of Zn(2+) and F(-) ions.

Optical sensor: a promising strategy for environmental and biomedical monitoring of ionic species

“…316 The standard instrumental analysis techniques for heavymetal ions detection often require sample preparation which may change oxidation states of the metal ions, leading to false positives. 321,322 Herein, we have summarized the varieties of zinc sensor with variable functionalities. 318 Furthermore, detection of zinc is also important for environmental safety as it is widely employed in the electroplating industries and persistence as environmental pollutants where its toxicity has been found in both acute and chronic forms.…”

Polypyridyl-imidazole based smart Ru(II) complex mimicking advanced Boolean and Fuzzy logic functions

“…Several molecular systems mimicking different gates performing Boolean logic operations and responding to a large variety of activating input signals (e.g., light, electrical, magnetic, and chemical) were developed in the past two decade [1][2][3][4][5]. In contrast to mimicking the functions of basic logic gates as well as their simple combinations, the molecular systems capable of demonstrating sequential logic operations as required in circuits, molecular keypad locks [28][29][30], and memory devices are relative few in the literature [8,[31][32][33][34]. Moreover, there is huge scarcity of coordination complex-based molecular systems with versatile geometry and excellent optoelectronic properties compared with their organic counterparts in exhibiting sequential advanced logic functions [35][36][37].…”

Anion Sensors as Logic Gates: A Close Encounter?

“…In addition, anion‐induced reactions, such as desilylation and nucleophilic interactions, have also been used for the anion detection. Many anion sensors have been utilised for significant applications, such as detection of cancer cells, determination of percentage composition in binary solvent mixtures, detection of water contaminants, anion‐detecting strips and smart molecules . In addition, these anion sensors have been used to develop computing components, such as molecular logic gates, which will be explained in‐detail in the following text.…”