A thiazolothiazole based Cu²⁺selective colorimetric and fluorescent sensor via unique radical formation

Abstract

A novel thiazolothiazole-based Cu(2+) colorimetric and fluorescent sensor is reported. A highly selective colorimetric change from yellow to dark green was observed among various metal ions after adding Cu(2+). Unique radical formation can engender these highly selective colorimetric and fluorescent changes.

Experimental and Computational Studies of a Multi‐Electron Donor–Acceptor Ligand Containing the Thiazolo[5,4‐d]thiazole Core and its Incorporation into a Metal–Organic Framework

“…Instead, focus has largely been placed on the incorporation of TzTz into charge transfer systems by coupling the electron accepting ( n ‐type) behavior of the moiety with that of an electron donor ( p ‐type), creating extended organic compounds displaying sought‐after electrical properties 11. Though initially focused on biological activity, the discovery of the photophysical properties of TzTz in organic systems has led to the creation of semiconducting polymers,12 field‐effect transistors8a and optical devices 8b…”

A simple Schiff base fluorescence probe for highly sensitive and selective detection of Hg2+and Cu2+

“…It was reported that borohydride (NaBH 4 ) was able to turn the more oxidative Hg 2+ into Hg 0 , these less oxidative ions (Cu 2+ , Co 2+ , Ni 2+ , et al ) remained unaffected during the process [29], so in order to detected Cu 2+ , we used NaBH 4 as masking regent to eliminate the related quenching from Hg 2+ ion.…”

“…In recent years, many fluorescence probes for selective and sensitive detection of Hg 2+ or Cu 2+ have been reported [23][24][25][26][27][28][29], most of them can be utilized to directly detect low concentration of Hg 2+ or Cu 2+ in real environmental samples and in living cells. To the best of our knowledge, some fluorescence sensors for simultaneous Hg 2+ and Cu 2+ ions have been reported [30][31][32], but there are many aspects left to be improved, such as narrow pH range, low water solubility, complex preparation and lack of sensitivity.…”

Near-infrared quantum dots based fluorescent assay of Cu2+ and in vitro cellular and in vivo imaging

“…Up to now, a number of sensors used for the assay of Cu 2+ have been developed, such as electrochemical and electrochemical luminescence sensors [16,17], colorimetric assays [18,19], atomic absorption assays [20], and fluorescent detections [21][22][23][24][25][26][27]. Among these reported methods, the fluorescence technique has been studied in recent years, owing to several superior advantages i.e., high sensitivity and low detection limit, excellent stability and selectivity and low-cost.…”