Synthesis And Properties Of Novel Polyesters With Schiff Base Or 8-Hydroxyquinoline Structure And Their Metal Complexes

This paper designed and synthesized 12 kinds of polyesters?P1^P12?and 9 kinds of polyester zinc,aluminum complexes?P7-Zn^P12-Zn,P10-Al^P12-Al?.The structure and properties of polyesters and metal complexes were characterized by FT-IR,¹H NMR,UV-vis,GPC,TG,ICP and fluorescence spectra.P7^P9 and P7-Zn^P9-Zn were soluble in THF,CHCl₃,DMAc,DMF,DMSO,NMP.P10^P12 were soluble in DMAc,DMF,DMSO and NMP.P10-Zn^P12-Zn and P10-Al^P12-Al can be partially dissolved in DMAc,DMF,DMSO and NMP.Solubility measurements indicated that the polyesters and metal complexes have good solubility.The weight average molecular?Mw?of P4^P12 were 1965,2726,4639,2482,4164,6148,2569,4579 and 7661 g/mol,PDI 1.21¹.52.5%weight loss temperature of P7^P9 were 272.2,261.4 and 270.8?,P7-Zn^P9-Zn were 286.8,281.7 and 287.5?.5%weight loss temperature of P10^P12 were 285.2,287.5 and 291.3?,P10-Zn^P12-Zn were 292.4,293.4 and 305.8?,P10-Al^P12-Al were 337.1,346.2 and 348.9?,respectively.Thermal analysis measurements indicated that polyesters and polyester zinc,aluminum complexes have good thermal stability.The maximum fluorescence emission peaks of P7^P9 and P10^P12 in DMF solution appeared at 416⁴18 nm and 432⁴33 nm,they emitted purple fluorescence.The maximum fluorescence emission peaks of P7-Zn^P9-Zn,P10-Zn^P12-Zn and P10-Al^P12-Al in DMF solution appeared at 505⁵07 nm,537⁵38 nm and 494⁴96 nm,they emitted green fluorescence.12 kinds of novel polyesters?P1^P12?and 9 kinds of polyester zinc,aluminum complexs?P7-Zn^P12-Zn and P10-Al^P12-Al?were successfully synthesized in this paper.they have good solubility,thermal stability and optical properties.P7^P12,P7-Zn^P12-Zn and P10-Al^P12-Al are promising candidates for optoelectronic functional polymer materials.