Novel indole based dual responsive “turn-on” chemosensor for fluoride ion detection

Recent progress in development of 2,3-diaminomaleonitrile (DAMN) based chemosensors for sensing of ionic and reactive oxygen species

“…To utilize these properties, a duel channel chemosensor (5) comprising two indole moieties was synthesized from condensation reaction of diaminomaleonitrile with indole-3-carboxaldehyde for sensing of uoride ion. 37 Reported sensor 5 selectively sensed uoride ion without interferences of other anions. The signicant changes in emission and absorption spectrum upon addition of uoride was explained on the basis of hydrogen bond interaction between F À ion and N-H group of indole moiety.…”

Research Progress in Design, Synthesis and Application of Benzo Nitrogen-Containing Heterocyclic Fluorescent Probes

“…利用 3-吲哚甲醛类化合物与二胺的缩合反应, 可构 建含有多个 C＝N 双键的探针分子 [69] . Chellappa 课题 组 [70] 将 3-吲哚甲醛与 2,3-二氨基-2-丁烯二腈缩合, 制备 了 F -探针 48 (Eq. 13), 其与 F -的配位比为 1∶1, 检测限 为 2.73×10 -7 mol•L -1 .…”

A hydrazide organogelator for fluoride sensing with hyperchromicity and gel-to-sol transition

“…For instance, anthracene, 10,11 anthraquinone, 12,13 calixpyrrole, 14,15 dipyrrolylquinoxaline, 16 and other chromophore molecules have been used as chromogenic units, displaying various colors and/or uorescence. In addition, uoride-binding motifs such as urea, 17,18 thiourea, 19,20 hydrazide, 21,22 indole, 23,24 and imidazole 23,25 groups have been adopted for selective recognition of uoride. The receptor groups mostly recognize uoride by Hbonding or deprotonation of the -NH moiety.…”