Ngwaahịa

Usoro nke bimetallic complexes nke ruthenium (II) nke jikọtara heterocyclic ligands nke e guzobere site na condensation nke 4,5-diazafluoren-9-otu nwere diamines dị iche iche, hydrazine, 1,4-phenylenediamine, benzidine, na 4,4'-methylenedianiline. na-arụpụta ụlọ ọrụ igwe kewapụrụ site na anya dị iche iche.Ihe mgbagwoju anya na-ebute nfefe nke metal-to-ligand na mpaghara 450 nm nke ụdị a na-ahụ anya na intraligand pi --> ntụgharị pi na mpaghara 300 nm nke ultraviolet spectrum.Ebe ruthenium (II) bụ oxidized na usoro elektrọn abụọ nwere njikọ chiri anya na ikike dị mma karịa nke Ru (bpy) (3) (2+).A na-ebelata ligands abụọ nwere njikọ chiri anya otu-electron n'ụzọ dị mma karịa nke ahụ maka mbelata njikọ bipyridine a na-ahazi (ihe dị ka -1.30 V), ọ bụ ezie na diazafluorene = NN = diazafluorene bridging ligand na-ebelata n'ụzọ dị iche iche na otu-electron abụọ. nzọụkwụ na ụkpụrụ E (1/2) nke -0.29 na -0.52 V. Mgbe emechara ka ọ dị ọcha site n'ịmepụta ogige ndị dị ọcha n'elu kọlụm silica gel dị iche iche nke 0.10 M NH (4) PF (6) na methanol, emission pụtara naanị na otu iko iko na 77 K na obere okpomọkụ na ngwọta.Oge ndụ ihe na-epupụta na 77 K na 4: 1 ethanol: iko methanol bụ 5 +/- 1 & mgr;s.Ọmụmụ ihe ọmụmụ oge ndụ na-agbanwe okpomọkụ na-ekpughe ọnụnọ nke ala dị ala na DeltaE = ihe dịka 1500 cm (-) (1), na mwepu n'ime ụlọ okpomọkụ na-egosi na oge ndụ ikuku na-adị na nso subnanosecond.