Atom Transfer Radical Polymerization Of Novel Functional Monomers Containing 1, 8-naphthalimde Derivatives And Fluorescent Property Of Polymers

Polymeric fluorescent materials have attractived extensive interest because of their favorable optical properties and processability. 1,8-naphthalimide is one kind of highly fluorescent chromophores. So 1,8-naphthalimide was attached into polymer network herein and the polymer in the meantime possessed fluorescent properties of chromophores and merit of flexibility and ease of film forming of polyemr materials.Atom Transfer Radical Polymerization (ATRP) is one kind of living radical polymerization, tolerant to large amount of functional groups. This living radical polymerization has become a powerful tool to synthsize polymers with special structure and properties.In this thesis,polymer containing 1,8-naphthalimide as pendant group were synthesized through ATRP and the structure and fluorescent properties were characterized. The main content of these work is listed below.Three new monomers containing 1,8-naphthalimide structure (NAPa,NAPband NAP) were synthesized and polymerized through ATRP. The number average molecular weight of the homopolymer increased linearly with the increase of monomer conversion and the molecular weight distribution was narrow, which verified the controllability of ATRP on these three monomers.Gylcol bis(2-bromo-isobutyrate),propanetriol tri(2-bromoisobutyrate)and pentaerythritol tetra(2-bromoisobutyrate)were synthesized and used as initiator for Atom Transfer Radical Polymerization of NAPa and N-isopropyl acrylamide to synthesize linear block copolymers and star-shaped block copolymers with three and four arms. The fluorescent properties of these block copolymers were studied.Fluorescent emission of the copolymer poly(NAP-co-St) in solution was sensitive to metal cations. the effect of Zn2+, Ni2+, Cu2+, Co2+, Fe3+, Mg2+, Hg2+ and Pb2+ on the fluorescent emission was systematically studied. Based on the result, copolymer poly(NAP-co-St) was promising material as cations sensor to detective Cu2+, Co2+, Mg2+ and Ni2+.