A squaraine-based fluorescence turn on chemosensor with ICT character for highly selective and sensitive detection of Al3+ in aqueous media and its application in living cell imaging

Recent progress in the development of highly active dyeing photoinitiators based on 1,3-bis(p-substituted phenylamino)squaraines for radical polymerization of acrylates

“…As a result, the complexes are formed, which can lead to a change in the spectral characteristic of the dye. [81][82][83][84][85] It should be noted that squaraines show huge importance in medicine. This is primarily related to beneficial spectral properties and good biological activity.…”

“…As a result, the complexes are formed, which can lead to a change in the spectral characteristic of the dye. 81–85…”

A novel imidazole‐derived Schiff base as selective and sensitive colorimetric chemosensor for fluorescent detection of Cu2+ in methanol with mixed aqueous medium

“…The incremental addition of Cu 2+ affects the enhancement in the intensity of fluorescence of SB, which may be attributed to an interference of two very interesting mechanisms: ICT and CHEF. [54][55][56] SB alone in solution exhibits a low emission intensity of fluorescence, owing to the free isomerization of the azomethine bond. [57,58] F I G U R E 7 Effect of pH on the absorption intensity at 542 nm of SB in the presence of Cu 2+ (3 equiv.)…”

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

“…The metal ions such as Fe 2+ and Fe 3+ slightly interfered with the enhancement of fluorescence emission due to their paramagnetic and strong quenching behavior. 51 This higher selectivity of the chemosensor 2CND toward Sn 2+ can be rationalized in that the suitable binding sites and the direction of the geometry enable the selectivity of 2CND; however, the other binding modes do not influence the increase in fluorescence emission. Determination of Binding Stoichiometry and Association Constant.…”