Selective and Sensitive Turn-on Chemosensor for Arsenite Ion at the ppb Level in Aqueous Media Applicable in Cell Staining

Abstract

A newly designed and structurally characterized cell permeable diformyl-p-cresol based receptor (HL) selectively senses the AsO3(3-) ion up to ca. 4.1 ppb in aqueous media over the other competitive ions at biological pH through an intermolecular H-bonding induced CHEF (chelation-enhanced fluorescence) process, established by detailed experimental and theoretical studies. This biofriendly probe is highly competent in recognizing the existence of AsO3(3-) ions in a living organism by developing an image under a fluorescence microscope and useful to estimate the amount of arsenite ions in various water samples.

Green synthesis of surface-passivated carbon dots from the prickly pear cactus as a fluorescent probe for the dual detection of arsenic(iii) and hypochlorite ions from drinking water

“…[13][14][15][16] Further, As 3+ /ClO À ions cause a severe health risk of cardiovascular and respiratory diseases. [17][18][19][20] Therefore, it is mandatory and a pressing need for the global research community to develop a user-friendly, selective, sensitive, and reliable method for the detection of As 3+ /ClO À ions.…”

A highly selective “ON–OFF” probe for colorimetric and fluorometric sensing of Cu2+in water

“…Diformyl phenol derivatives have been widely used as uorescence chemosensors on account of their excellent luminescence properties. [64][65][66][67][68] To the best of our knowledge, limited work has been carried out in the development of diformyl phenol based probes for selective colorimetric sensing of Cu 2+ and only two examples are there that represent quenching based detection of Cu 2+ (ESI Chart 1 †). 58,69 Furthermore, involvement of tautomeric equilibrium has not been explored till date.…”

Photodynamic Applications of New Imidazo[4,5‐f][1,10]phenanthroline Oxidovanadium(IV) Complexes: Synthesis, Photochemical, and Cytotoxic Evaluation

“…[13][14][15][16] Several transition metals complexes that release CO or NO and generate singlet oxygen or other reactive oxygen species (ROS) upon photoactivation are being explored for photochemotherapeutic applications. [17][18][19][20][21][22][23][24][25][26] Later transition metal complexes that absorb high-energy light (< 600 nm) are contraindicated for phototherapeutic applications. This is because high-energy light does not penetrate tumor tissue deeply, and heavy metals have some degree of inherent toxicity.…”