Iimveliso

Uluhlu lwee-bimetallic complexes ze-ruthenium (II) ezifakwe kwi-heterocyclic ligands eyenziwe yi-condensation ye-4,5-diazafluoren-9-enye ene-diamines eyahlukeneyo, i-hydrazine, i-1,4-phenylenediamine, i-benzidine, kunye ne-4,4'-methylenedianiline, iziphumo kumaziko esinyithi ahlulwe yimigama eyahlukeneyo.I-complexes ivelisa i-metal-to-ligand charge-transfer absorptions kwingingqi ye-450 nm ye-spectrum ebonakalayo kunye ne-intraligand pi -> iinguqu ze-pi kummandla we-300 nm we-ultraviolet spectrum.Amaziko e-ruthenium(II) adityaniswe nge-oxidized kwiinkqubo ezimbini ezisondeleleneyo ze-electron enye kwizinto ezinokuthi zibe zilungile kunezo ze-Ru(bpy)(3)(2+).I-bridging ligands icuthwa ngeenkqubo ezimbini ezisondeleleneyo ze-electron enye kumandla angcono kunoko kuncitshiswa kwe-bipyridine ligands elungelelanisiweyo (malunga ne-1.30 V), nangona i-diazafluorene=NN=diazafluorene bridging ligand iyancitshiswa ngokubuyela umva kwi-electron enye. amanyathelo ku-E(1/2) amaxabiso e- -0.29 kunye -0.52 V. Emva kokucocwa ngokucofa iikhompleksi ezisulungekileyo phezu kwekholamu yejeli ye-silica eneendidi ezahlukeneyo ze-0.10 M NH(4)PF(6) kwimethanol, ukukhutshwa kwenzeka kuphela i-matrix yeglasi kwi-77 K kunye nobushushu obuphantsi kwisisombululo.Ubomi obukhutshwayo ku-77 K kwi-4:1 ethanol:iglasi yemethanol yi-5 +/- 1 &mgr;s.Uphononongo oluguquguqukayo lokuphuma kobushushu bokuphila ubomi bubonisa ubukho bemeko ephantsi kunye neDeltaE = malunga ne-1500 cm (-) (1), kunye ne-extrapolation kwiqondo lokushisa legumbi kubonisa ukuba ubomi bokukhutshwa buluhlu lwe-subnanosecond.