新型含氮配体及其主链型cuⅱ znⅱ的聚合配合物的设计合成与光性能研究-design, synthesis and optical properties of novel nitrogen-containing ligand and its main chain type cu ⅱ zn ⅱ polymeric complex.docxVIP

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新型含氮配体及其主链型cuⅱ znⅱ的聚合配合物的设计合成与光性能研究-design, synthesis and optical properties of novel nitrogen-containing ligand and its main chain type cu ⅱ zn ⅱ polymeric complex.docx

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新型含氮配体及其主链型cuⅱ znⅱ的聚合配合物的设计合成与光性能研究-design, synthesis and optical properties of novel nitrogen-containing ligand and its main chain type cu ⅱ zn ⅱ polymeric complex

AbstractRecently, polymeric metal complexes have been extensively investigated as electroluminescent materials, because they not only exhibit properties of polymers, but also possess properties of inorganic and organic small molecule metal complexes. So far, investigations of polymeric metal complexes mainly focus on narrow energy gap, luminescence purity and good thermal stability. In this paper, we designed and synthesized two novel ligand: 4,4′-bis([1,10] phenanthroline-[5,6-d] imidazol-N-octyl-2-yl)triphenylamine (BPIOT) and 4,4′-bis(1,10-phenanthroline- [5,6-d]imidazole-2-yl)- biphenyl (BPIBP), as well as four main-chain polymeric complexes: BPIOT-Cu(II), BPIOT-Zn(II), BPIBP-Cu (II) and BPIBP-Zn (II). The photoluminescent and thermal properties of these complexes were studied. Main works are as follow:According to molecular design, two nitrogen ligands BPIOT and BPIBP have been synthesized. BPIOT is composed of TPA as the hole-transporting unit and 1, 10- phenanthroline derivative as the electron-transporting unit, and form acceptor-donor-accepter structure, which play the important role in luminescence purity; BPIBP is formed through 1,10-phenanthroline and biphenyl units. The introduction of biphenyl unit enhances π-conjugation and rigidity of the ligand. Two ligands have been characterized by IR, NMR and elementary analysis.Ligand BPIOT reacts with Cu (II) and Zn (II), respectively, two new polymeric complexes have been synthesized. The fluorescent spectra of the polymeric complexes display maximum emission wavelengths at 489 and 477 nm in DMSO solution, and maximum emission wavelengths at 548 and 547 nm in the solid state, the results indicate that the polymeric complexes have blue/green light emission in DMSO solution and pure green light emission in the solid state, respectively. The fluorescence of the compounds predominantly originate from π–π* transition. The polymeric complexes have a repetitive acceptor-donor-accepter structure in main chain, the rep