A novel ratiometric fluorescent probe for detection of Fe3+ by rhodamine–quinoline conjugate

Dual-binding pyridine and rhodamine B conjugate derivatives as fluorescent chemosensors for ferric ions in aqueous media and living cells

“…[40][41][42][43][44][45][46][47] Meanwhile, rhodaminebased enhanced probes for Fe 3+ have been designed and discussed in recent years. [48][49][50][51][52] Most of these probes have difficult problems to solve, such as the need for expensive raw materials, complex synthesis steps, poor water solubility, poor biocompatibility, etc.…”

A new rhodamine-based colorimetric chemosensor for naked-eye detection of Cu 2+ in aqueous solution

“…19,20 Specifically, it is based on spirolactam (colorless and nonfluorescent) to ring-opened amide (color and fluorescent) process utilized for the detection of metal ions. [21][22][23][24][25][26][27][28][29][30][31] Based on this mechanism, our ambition was to design and synthesize a new colormetric probe for detection of Cu 2+ in aqueous media. Herein, we introduce a novel and simple method to prepare rhodamine B-based chemosensor by two steps reaction.…”

8‐Hydroxyquinoline Fluorophore for Sensing of Metal Ions and Anions

“…The Schiff base compound 22 ( Figure 20) containing quinoline and rhodamine moieties linked with the glyoxal group displayed an absorption peak at 300 nm whereas weak fluorescence emission band at 425 nm exhibited because of PET process of unshared pair of electron of N atom of quinoline ring. [50] The characteristic emission due to rhodamine moiety at 550 nm was not observed because of the spirolactam ring form of rhodamine core moiety. However, the absorption band at the wavelength of 300 nm has been increased to some extent with the increment of Fe 3 + to the solution of 22 and two new absorption spectra at 350 and 530 nm were observed with an increase in absorption intensity.…”