Preparation Of Aldehyde-decorated Polymer And Investigation Of It's Application As Fluorescence Probe

In this thesis,two kinds of aldehyde group modified polymers were synthesized by free radical polymerization and Suzuki coupling reaction.Further reactions were used to post-modify polymers' structures and got a series of fluorescent polymers.Optical properties of those polymers were investigated here and they can realize the detection of some special compounds,such as explosive,some heavy metal ions and activating oxide.The work in thesis can be summarized as follows:Firstly,a kind of polyacrylate-derivatived polymer?P1?was synthesized via free radical polymerization which containing aldehyde groups in its side chain.Some functional groups have been successfully introduced into the polymer through Kabachnik-Fields multicomponent post-polymerization reaction.One of the polymer was choose to study its fluorescence property and it was found that the polymer displayed specific optical response to explosive?TNP?.Secondly,Suzuki coupling reaction was utilized to synthesis a type of aldehydecontaining conjugated polymer with riphenylamine-fluorene backbone?CP1?.CP1 was post-modified by tandem Knoevenagel-Michael reaction to afford dimedonedecorated aimed polymer?CP2?.With the introduction of aqueous Hg²⁺,fluorescence of CP2 in high-water system altered significantly,with the emission changed from blue to orange.Besides this,CP2 also displayed specific optical response to ClO^-in another high-water probing medium.Finally,given that the interaction between isocyanide and metal ion was rarely reported by far,the isocyanide was linked to CP1 by Schiff base to afford the polymer CP3.Fluorescence property research shown that there was strong interaction between isocyanide and Ag⁺,and the fluorescence of CP3 was specifically altered thus.