Synthesis And Properties Study Of Two Kinds Of Fe(Ⅲ)-Ratiometric Sensitive Fluorescent Hetero Compounds

Nowadays,with the development of economy and the progress of society, more and more people realize the importance of environment to the development of economy and the quality of people's life.The development of industry, especially heavy industry brought impact on waters,atmosphere and organisms and people's life are threatened seriously. So a rapid and convenient method for the detection of hazardous materials in the waters,atmosphere and organs becomes the focus of scientists of all fields.As people gradually for the fluorescent compounds-depth understanding,it was discovered the molecular structure and probe environment and the luminous intensity of their spectral behavior will bring the law in effect,when people design the fluorescent sensor molecules,they often modify the molecular structure of probe in order to obtain new probes to be better detection results.Using the simple approach, the following two kinds of new compounds were prepared:2-(10-chloroanthracen-9-yl)-5-(pyridin-2-yl)-1,3,4-thiadiazole and 4-(anthracen-9-yl)-2-(pyridin-2-yl)thiazole.The former probe,emitting yellow-green fluorescence under the ultraviolet light,showed a high ratiometric fluorescent selectivity to iron(â…¢) without interferences of the background metal ions.The latter molecule was synthesized and characterized and the absorption spectra and the effects of metal ions on the fluorescent intensity were studied.The experimental results showed that fluorescence intensity decreased upon addition of twelve kinds of metal ions to different extent in methanol solutions,while the quenched behaviors of Cu2+, Hg2+and Fe3+were exceptional.In neutral aqueous solutions,the fluorescent intensity of system enhanced approximately 1000-fold than previous conditions. On the basis of these studies, an INH fluorescent molecular logic gate was fabricated with H2O and metal ions (Mn+) inputs and with emission of APT as the output signal.