Synthesis and evaluation of a new Rhodamine B and Di(2-picolyl)amine conjugate as a highly sensitive and selective chemosensor for Al3+ and its application in living-cell imaging

Design and synthesis of a novel chromium(III) selective fluorescent chemosensor bearing a thiodiacetamide moiety and two rhodamine B fluorophores

“…Therefore, various fluorophores with different excitation and emission wavelengths, such as coumarin [30,31], pyrene [32,33], 1, 8-naphthalimide [34,35], xanthenes [36,37], squaraine [38], cyanine [39], boron dipyrromethene difluoride (BODIPY) [40], and nitrobenzofurazan [41], have been employed to develop various chemical sensors. Among the developed fluorophores, rhodamine and its derivatives [42,43] employ an ideal framework in the construction of fluorescent probes due to their excellent spectroscopic properties including high fluorescence quantum yield, large molar extinction coefficient, and visible wavelength excitation [44][45][46][47]. Based on the principle of metal coordination-induced spirolactam ring-opening of rhodamine, a large number of probes have been reported for the detection of various metal ions, such as Fe 3+ , Hg 2+, Cu 2+ , Sn 4+ , Sn 2+ , Zn 2+ , Pb 2+ , and Cd 2+ [48][49][50][51][52][53][54][55].…”

A pH optical and fluorescent sensor based on rhodamine modified on activated cellulose paper

“…RhA was synthesized according to a procedure in the literature modified slightly . Rhen (0.25 g, 0.50 mmol) was dissolved in dry DCM and succinic anhydride (0.04 g, 0.05 mmol) was added, and the solution was stirred under N 2 gas at room temp.…”

FRET‐based Fluorescent and Colorimetric Probe for Selective Detection of Hg(II) and Cu(II) with Dual‐mode

“…Rhodamine B (4.8 g, 10.02 mmol), 3.01 g ethylenediamine (50.10 mmol), and 50 mL ethanol were added into a 100 mL flask and heated at reflux till the pink color disappeared . Then, the cooled reaction solution was poured into distilled water and extracted with ethyl acetate.…”