Study On The Photoswitch Of Iridium Nanoparticles And Rare Earth Complexes With Nitrogen Hexa-Heterocyclic Ligands

Ir nanoparticles with N-(but-3-en-1-yl)-4-(phenyldiazenyl)aniline have been synthesized from azobenzene. The morphology, structure and the spectra properties of the nanoparticles and their specific ligands are studied by transmission electron microscopy(TEM), mass spectra, ’HNMR and FT-IR spectrum. The result of TEM shows:the diameter of the Ir nanoparticles with N-(but-3-en-1-yl)-4-(phenyldiazenyl)aniline was 1.42nm. Then, the glassy carbon electrode modified with Ir nanoparticles was prepared by depositing Ir nanoparticles with N-(but-3-en-1-yl)-4-(phenyldiazenyl)aniline onto GC electrode. The rectify effect of the GC electrode modified with Ir nanoparticles was studied. The results show the structure of the Ir nanoparticles with N-(but-3-en-1-yl)-4-(phenyldiazenyl)aniline can been modified by light. So the electrochemical reaction on the surface of the GC electrode can been controlled by light.Then Ir nanoparticles with N-(but-3-en-l-yl)-4-styrylanilme have been synthesized from stilbene. The morphology, structure and the spectra properties of the nanoparticles and their specific ligands are studied by transmission electron microscopy(TEM), mass spectra, NMR, UY-Vis, infrared spectrum and fluorescence spectra. The results show the fluorescence intensity of the Ir nanoparticles with N-(but-3-en-1-yl)-4-styrylaniline can been modified by light. The fluorescence intensity of Ir nanoparticles with (E)-N-(but-3-en-1-yl)-4-styrylaniline are stronger than the fluorescence intensity of Ir nanoparticles with (Z)-N-(but-3-en-1-yl)-4-styrylaniline.Four kinds of crystal rare-earth complexes and eight kinds of powder rare-earth complexes have been synthesized. The single crystal structure analysis shows the compositions of these complexes were supposed to be as follows:[Dy2(Phen)2(p-BrBA)6] [Eu2(TPTZ)2(p-BrBA)6]、[Tb2(Phen)2(p-BrBA)2(Ac)4] [Tb(TPTZ)(p-BrBA)3(H2O)]. [Dy2(Phen)2(p-BrBA)6] belongs tomonoclinic system and the others belong to triclinic system. [Tb(TPTZ)(p-BrBA)3(H2O)] is monuclear and the others belong to dimeric structure. Powder complexes were also characterized by elementary analysis to make the compositions were supposed to be [Dy(Phen)(p-BrBA)3], [Tb(Phen)(p-BrBA)3], [Sm2(Phen)(p-BrBA)4Ac2]、 [Eu2(Phen)(p-BrBA)3Ac3], [Dy(TPTZ)(p-BrBA)3(H2O)], [Tb(TPTZ)(p-BrBA)3(H2O)], [Sm(TPTZ)(p-BrBA)3], [Eu(TPTZ)(p-BrBA)3(H2O)2]. The luminescence spectra and luminescence lifetime showed that the rare earth complexes can be widely applied in rare earth luminescent materials. The luminescence property of Eu and Tb complexes are better than Sm and Eu complexes.