A coumarin–indole based colorimetric and “turn on” fluorescent probe for cyanide

Fourier transform infrared (FT-IR) study on cyanide induced biochemical and structural changes in rat sperm

“…Further, in our previous work we have also revealed that, higher doses of cyanide can induce changes in histoarchitecture of testis, epididymis and prostate and it has been presumed due to the induced oxidative stress. Several studies have demonstrated that, cyanide can induce oxidative stress in functionally different tissues [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] . As a consequence, the induced oxidative stress in the male reproductive organs will cause harmful effect on sperms due to the lack of their own antioxidant mechanism.…”

“…Since these complexes are reversible, cyanide could be dissociated from them under the organ system and inhibits the several cellular enzymes, including cytochrome c oxidase resulting in cellular hypoxia and cytotoxic anoxia, which is potentially fatal [13] . Studies have reported that, cyanide also inhibit several other metalloenzymes including superoxide dismutase (SOD), xanthine oxidase, catalase (CAT), peroxidases (Px), nitrogenase, nitrate reductase and subsequently induce oxidative stress in functionally different tissues by enhanced generation of reactive oxygen species (ROS) [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] . However, sperms are most sensitive to oxidative stress due to the lack of their own antioxidant mechanism [24] .…”

Novel coumarin-based fluorescent probe for selective detection of Cu(II)

“…Fluorescence can vary with polarity and viscosity because it is sensitive to the local environment [6]. Coumarin is a suitable fluorophore because of its desirable photophysical properties such as its large Stokes shift and visible excitation and emission wavelengths [8].…”

A novel pyrazoline-based fluorescent probe for detecting fluoride ion in water and its application on real samples

“…47 We compared the concentration of F À in tested samples (as calculated from weight of toothpaste) and detected value (as obtained from the uorescence intensity changes, Fig.1b). 18,59,63 The corresponding emission spectra were recorded in solution (CH 3 CN : H 2 O ¼ 8 : 2, v/v, pH ¼ 7.4). 4, the two parameters have good correlation.…”

“…Replacing the deionized water with natural water and added F À in known concentration. 18,59,63 The corresponding emission spectra were recorded in solution (CH 3 CN : H 2 O ¼ 8 : 2, v/v, pH ¼ 7.4). As shown in Table 1, the tested concentrations of F À (as obtained from the uorescence intensity changes, Fig.…”