Luminescent Pyrene-based Schiff base Receptor for Hazardous Mercury(II) Detection Demonstrated by Cell Imaging and Test Strip

A pyrene-induced PET-based chemosensor for biologically important Zn(ii) ions: application in test strips and live cell imaging studies

“…The DTQ exhibited a unique pyrene absorption band at wavelengths ranging from 235 to 350 nm. 18 The DTQ showed a broad absorption band centered at 370 nm, which is ascribed to the imine functional group. 33 Upon introducing Zn( ii ), DTQ shows a remarkable red shift at 411 nm.…”

“…Zn( ii ) was estimated using the formula. 18 The diluted solutions of free DTQ and a 1 : 1 stoichiometric ratio of DTQ + Zn( ii ) with absorbance 0.1 at an excitation wavelength of 370 nm were used for quantum yield calculations.…”

“…Because of complicacy in sample preparation, expensiveness, time consumption, etc., these methods suffer from limitations. 17,18 Hence, compared with the above methods, uorescence sensing technology clearly displays precise bene-ts in the detection and quantication of Zn 2+ and has gained considerable attention from researchers due to its low detection limit, real time response, low cost, simple operating procedure, high selectivity, excellent sensitivity and non-destructive nature. Additionally, the uorescence technique is convenient for in vitro and in vivo visual cell imaging studies.…”

Captivating nano sensors for mercury detection: a promising approach for monitoring of toxic mercury in environmental samples

“…for metal detection, such as colorimetric and uorescence detection via engaging scaffolds such as rhodamine-B, [22][23][24][25][26] 1,8naphthalimide, [27][28][29] coumarin, [30][31][32] pyrene, [33][34][35] calixarene, 36,37 and hydroxyquinolines [38][39][40] etc. Nevertheless, certain sensors exhibit limitations due to challenges in synthesis, expensive starting materials, or insufficient selectivity, and typically operate within organic solvents, thereby restricting their applicability in real environmental conditions.…”

“…Moreover, the detection of mercury, particularly at low levels in aqueous environments, remains a persistent challenge due to limitations inherent in conventional techniques. Conversely, simple, cost-effective, and time-efficient methods are also being utilized for metal detection, such as colorimetric and fluorescence detection via engaging scaffolds such as rhodamine-B, 22–26 1,8-naphthalimide, 27–29 coumarin, 30–32 pyrene, 33–35 calixarene, 36,37 and hydroxyquinolines 38–40 etc. Nevertheless, certain sensors exhibit limitations due to challenges in synthesis, expensive starting materials, or insufficient selectivity, and typically operate within organic solvents, thereby restricting their applicability in real environmental conditions.…”