Nā huahana

He pūʻulu hui bimetallic o ruthenium(II) i hoʻopaʻa ʻia e nā ligands heterocyclic i hana ʻia e ka condensation o 4,5-diazafluoren-9-one me nā diamine like ʻole, hydrazine, 1,4-phenylenediamine, benzidine, a me 4,4'-methylenedianiline, hopena i nā kikowaena metala i hoʻokaʻawale ʻia e nā mamao like ʻole.Hāʻawi nā paʻakikī i ka hoʻoili ʻana i ka metala-i-ligand charge-transfer absorptions ma ka māhele 450 nm o ka spectrum i ʻike ʻia a me intraligand pi --> pi transitions ma ka māhele 300 nm o ka spectrum ultraviolet.Hoʻokahe ʻia nā kikowaena ruthenium(II) i ʻelua kaʻina hana uila hoʻokahi i hoʻokaʻawale ʻia ma nā mea hiki ke ʻoi aku ka maikaʻi ma mua o ka Ru(bpy)(3)(2+).Hoʻemi ʻia nā ligand hoʻopaʻa ʻia e nā kaʻina hana hoʻokahi-electron i ʻoi aku ka maikaʻi ma mua o ka hoʻemi ʻana i nā ligand bipyridine i hui pū ʻia (ma kahi o -1.30 V), ʻoiai ua hoʻemi ʻia ka diazafluorene = NN = diazafluorene bridging ligand i loko o ʻelua electron hoʻokahi. nā ʻanuʻu ma E(1/2) waiwai o -0.29 a me -0.52 V. Ma hope o ka hoʻomaʻemaʻe ʻana ma o ka hoʻoheheʻe ʻana i nā complexes maʻemaʻe ma luna o kahi kolamu silica gel me nā ʻano ʻokoʻa o 0.10 M NH(4)PF(6) i loko o ka methanol, hiki ke hoʻokuʻu wale ʻia i loko. he matrix aniani ma 77 K a ma na wela haahaa i ka hooluolu.ʻO ke ola o ka hoʻokuʻu ʻana ma 77 K i loko o kahi ethanol 4:1: aniani methanol he 5 +/- 1 &mgr;s.Hōʻike ʻia kahi haʻawina haʻahaʻa haʻahaʻa me DeltaE = ma kahi o 1500 cm(-)(1), a ʻo ka extrapolation i ka lumi wela e hōʻike ana i nā manawa o ka hoʻokuʻu ʻana aia ma ka pae subnanosecond.