Synthesis And Properties Of Novel Polyamide Containing 8-Hydroxyquinoline Side Groups Zn(Ⅱ ),Al(Ⅲ ) Complexes And Bis-8-Hydroxyquinoline Zn(Ⅱ),Al(Ⅲ) Coordination Polymers

In this paper,three polyamides containing 8-hydroxyquinoline（P7～P9）and nine bis-8-hydroxyquinoline ligands（bis-HQ-1～bis-HQ-9）were obtained by multi-step reaction.They are reactive with zinc acetate and aluminum chloride to obtain six kinds of polyamides containing 8-hydroxyquinoline Zn（Ⅱ）,Al（Ⅲ）complexes（P7-Zn～P9-Zn and P7-Al～P9-Al）and 18 kinds of bis-8-hydroxyquinoline Zn（Ⅱ）,Al（Ⅲ）coordination polymer（P10-Zn～P18-Zn and P10-Al～P18-Al）.Their structures and properties were characterized by elemental analysis,ICP,FT-IR,UV-vis,1H NMR,GPC,TG,DSC and fluorescence spectroscopy.The weight average molecular weight（Mw）of the polyamides P7～P9 are 38990～60650g/mol,the PDI are 1.36～2.06.P7～P9 are easily soluble in organic solvents such as DMF,DMAC,DMSO and NMP.P7-Zn～P9-Zn and P7-Al～P9-Al can be partially dissolved in DMF,DMAC,DMSO and NMP.P10-Zn～P18-Zn and P10-Al～P15-Al are partially soluble in DMF,DMAC,DMSO,NMP.P16-Al～P18-Al are soluble in DMF,DMAC,DMSO and NMP.The5%weight loss temperatures(T_5%)of P7～P9 were 260.1～264.2°C,the T_5%of P7-Zn～P9-Zn and P7-Al～P9-Al are between 306.6～328.1°C,the T_5%of P10-Zn～P18-Zn and P10-Al～P15-Al are between 259.2～316.3°C.The glass transition temperatures（T_g）of P7～P9are 144.3～108.2°C.The T_gof the six kinds of polyamides Zn（Ⅱ）,Al（Ⅲ）complexes and eighteen kinds of bis-8-hydroxyquinoline Zn（Ⅱ）,Al（Ⅲ）coordination polymers are all higher than 200°C.P7～P9 of the DMF solutions(5×10^-5mol/L)emit blue-violet fluorescence at458～457 nm.P7-Zn～P9-Zn and P10-Zn～P18-Zn of the DMF solution(5×10^-5mol/L)emits strong yellow-green fluorescence between 501～513 nm,their the solids emits strong yellow-green fluorescence are emitted between 527～540 nm.P7-Al～P9-Al and P10-Al～P15-Al of the DMF solution(5×10^-5mol/L)in emits strong yellow-green fluorescence between 486～497 nm,the solids emits strong yellow-green fluorescence are emitted between513～533 nm.The fluorescence quantum yields（Φ_f）of P7～P9 were respectively 6.3%～8.5%,theΦ_fof the P7-Zn～P9-Zn and P10-Zn～P18-Zn are between 22.4%～33.5%,theΦ_fof the P7-Al～P9-Al and P10-Al～P15-Al were between 23.6%～33.8%,respectively.Successful synthesis of this paper three new polyamides containing 8-hydroxyquinoline,nine new bis-8-hydroxyquinoline ligands,six kinds of polyamides Zn（Ⅱ）,Al（Ⅲ）complexes and 18 kinds of bis-8-hydroxyquinoline Zn（Ⅱ）,Al（Ⅲ）coordination polymers were synthesized.The results showed that they all have good solubility,good thermal stability and fluorescence performance,it have potential application value in the field of photoelectric functional polymer materials.