Synthesis And Optical Properties Of Compounds Containing Anthracene Fluorophores

The development of optical methods to selectively recognize anddetect the biologically or environmentally important species is an inspiredwork in the fields of biochemistry, analytic and environmental chemistry.Due to the advantages of high sensitivity and simplicity compared withother ways, fluorescence signaling appears to be particularly attractive inthis regard. Anthracene and its derivatives are the most used fluorophoresto construct a metal ion chemosensor.Based on transition metal-templated strategy, a polyaza macrocycleligand bearing anthracenyl fluorophore, bis[N-((anthracen-10-yl)-Methy-lene)]-(1, 3, 5, 8, 10, 12-hexaaza-3, 10-N, N'-diaminocyclodecate-trane)(L)was prepared following the basic design concept of utilizing achromophore-spacer-receptor assembly to generate a luminescent signal.the structure of L was characterized by infrared spectra, mass spectra and¹H nuclear magnetic resonance. The fluorescence of ZnL changed withthe time, the content of water. This ligand exhibited prominent ability tosense selectively Zn(II) with an increase in fluorescence intensity inaqueous solution. The intensity of the fluorescence emission of Lincreased to the most 300 folds when L bind to Zn(â…¡) according with 1: 1,The investigation of the potential use in probing Zn(â…¡) in practicalsystems are now under the way. L could qualitative analysis detect thecontent of Zinc in serum, but only in qualitative analysis. Theexperimental results of UV-Vis titration and fluorescence spectroscopysuggested that L is a highly selective fluorescent chemosensor for zincions. The investigation of the potential use in probing Zn(â…¡) in practicalsystems are now under the way.Two new compounds that have fluorescent property weredesigned, namely, N¹-hydroxybenzylidene-N²-(2-(hydroxybenzylideneamino)ethyl)ethane-1, 2-diamine(C)andN¹-(2-(2-(hydroxybenzylidenea-mino)ethylamino)ethyl)-N¹, N²-2-((anthenracen-9-yl)methyl)-N²-hydrox-ylbenzylideneethane-1, 2-diamine(E) at time. Which are characterized by means of FTIR spectrometry, MS, Conceiving the compound of C andE can recognize amino acid. But the experiment of fluorescencespectroscopy about C and E show that the intensive of fluorescence aboutC and E are unchangeable with the addition of much anion(F^-, Cl^-, Br^-, I^-,CH₃COO^-, H₂PO₄^-, HPO₄^2-, PO₄^3-, glutamic acid, lysine)and cation(Zn²⁺,Ca²⁺, Co²⁺, Cr²⁺, Cu²⁺, Fe³⁺, K⁺, Mg²⁺, Mn²⁺, Na⁺, Pb²⁺). Theinvestigation of the reason are now under the way.