A multidentate ligand chromophore with rhodamine-triazole-pyridine units and its acting mechanism for dual-mode visual sensing trace Sn2+

Naphthoquinone-Dopamine Linked Colorimetric and Fluorescence Chemosensor for Selective Detection of Sn2+ Ion in Aqueous Medium and Its Bio-Imaging Applications

“…22 Xu et al have reported the rhodamine-triazolepyridine derivative for the dual-channel detection of Sn 2+ ion. 23 Recently, Ajalkar et al reported the Schiff base colorimetric chemosensor for the dual detection of Sn 2+ and CN − ions. 10 However, the best of these reported chemosensors possess some practical disadvantages such as deprived selectivity, weak fluorescence property, and impractical viability for living systems.…”

“…Sekar et al reported the benzophenone fluorescence chemosensor for Sn 2+ ion . Xu et al have reported the rhodamine-triazole-pyridine derivative for the dual-channel detection of Sn 2+ ion . Recently, Ajalkar et al reported the Schiff base colorimetric chemosensor for the dual detection of Sn 2+ and CN – ions .…”

A Dual‐Mode Colorimetric/Fluorescent Sensor Comprising Rhodamine B and Piperazine: Response to Acidic pH Values and Investigation of Recognition Mechanism

“…It is well known that rhodamine derivatives have exhibited series of excellent photophysical properties, such as “turn‐on” fluorescent property, high quantum yield and excellent photostability in long wave‐length visible region, which have been widely applied for environmental analyses . For example, Lee, et al., 48 developed a rhodamine‐based fluorescence dye for monitoring of pH from pH 7.0‐4.0 in live cells by virtue of the fluorescent change at 588 nm based on the ring‐opening of spirolactam in the presence of H + .…”

New rhodamine B-based chromo-fluorogenic probes for highly selective detection of aluminium(iii) ions and their application in living cell imaging

“…29 On the other hand, the free-rotating benzoic acid group can be accessibly substituted by the functional groups with multidentate chelation sites to chelate target ions for uorescence sensor without changing the spirolactam forms. 30 Particularly, the Schiff base rhodamine probes have received lots of attention due to their high sensitivity and selectivity, rapid response time and ease of synthesis, 31,32 where the imines functional groups can be generated by the introduction of different carbonyl or amines to adjust the spectral response range of the rhodamine matrix, and at the same time to form suitable "ONO", "ONN" or "ONNO" sites to rapidly anchor the target metal ions. 33 Moreover, the imines also provide the opportunity of C]N isomerization for probes to generate richer uorescence sensing pathway.…”