84501-28-0Relevant articles and documents
Proton-template synthesis, structure, and characterization of a Robson- type macrocycle with a totally π-conjugated system
Tian, Yunqi,Tong, Jian,Frenzen, Gerlinde,Sun, Jin-Yu
, p. 1442 - 1446 (1999)
π-Conjugated (1-4) and partially reduced (5) macrocyclic Schiff bases have been obtained by proton-template condensation of 2,6-diformyl-4-R1- phenol (R1 = Me, t-Bu) with 1,2-diamino-4,5-R2-benzene (R2 = H, Me).
Triptycene scaffolds: Synthesis and properties of triptycene-derived Schiff base compounds for the selective and sensitive detection of CN? and Cu2+
Emandi, Ganapathi,Browne, Michelle P.,Lyons, Michael E.,Prior, Caroline,Senge, Mathias O.
, p. 2956 - 2965 (2017/04/26)
A series of triptycene-derived Schiff bases were synthesized by condensation between amino triptycenes with an appropriate aldehyde and were isolated in good to excellent (85–90%) yields. Amongst these, a triptycene-hydroxybenzaldehyde Schiff base compound proved to be a selective sensor for cyanide. It exhibited a “turn-on” fluorescence response at 490?nm to CN? facilitated by the nucleophilic addition of CN? to the aldehyde group, accompanied by a visible color change from orange to yellow. Likewise, a triptycene salicylaldehyde adduct was shown to be highly sensitive towards the detection of the CN? ion with a detection limit of 0.9?μM. On the other hand a triptycene-BODIPY Schiff base compound could be used for the detection of Cu2+ ions over other competing, biologically relevant metal ions in acetonitrile. Photophysical studies revealed a 1:1 binding model for the triptycene-BODIPY compound.
Preparation method and application of mercaptan fluorescence probe based on coumarin
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Paragraph 0043; 0044; 0045; 0046;, (2016/12/07)
The invention discloses a preparation method and application of a mercaptan fluorescence probe based on coumarin. The preparation method includes: coumarin and p-tert-butylphenol dialdehyde are used as raw materials to synthesize a bis-Schiff base coumarin derivative (compound I), the compound I has strong fluorescence, and the compound I is coordinated with copper ions to prepare coumarin-copper ion (II) complex, namely the mercaptan fluorescence probe I-Cu (II). Due to the influence of the paramagnetism of Cu2+ and photoinduction electron transfer effect, the fluorescence of the compound I is quenched; sulfur atoms in compounds such as mercapto-amino acid and derivatives such as glutathione thereof and Cu2+ have a strong coordination effect, the competitive coordination effect allows the copper ions in the coumarin-copper ion (II) complex to be taken away by the mercapto-amino acid and the derivatives thereof so as to regenerate the compound I, and the fluorescence of the compound I is restored. Accordingly, a method for fast and simply detecting mercaptan compounds is built.