Ngwaahịa

Ogige ndị europium (III) na terbium (III), ya bụ [Eu (dpq) (DMF) 2 (NO3) 3] (1), [Eu (dppz) 2 (NO3) 3] (2), [Tb (dpq) (DMF) 2Cl3] (3), na [Tb (dppz) (DMF) 2Cl3] (4), ebe dipyrido [3,2-d: 2',3'-f] quinoxaline (dpq na 1 na 3) , Dipyrido [3,2-a: 2',3'-c] phenazine (dppz na 2 na 4) na N, N'-dimethylformamide (DMF) dịpụrụ adịpụ, nke sitere na data physicochemical ha, nchọpụta luminescence na mmekọrịta ha. ya na DNA, protein albumin serum na ọrụ mkpochapụ DNA sitere na foto na-amụ.Ihe owuwu kristal X-ray nke ogige 1-4 na-egosi ihe arụrụ arụ nke nwere mononuclear Ln(3+).Eu (3+) na [Eu (dpq) (DMF) 2 (NO3) 3] (1) na [Eu (dppz) 2 (NO3) 3] (2) dị ka [Eu (dppz) 2 (NO3) 3 ] · dppz (2a) na-anakwere usoro dodecahedron bicapped iri na-achịkọta ya na bidentate N, N-donor dpq ligand, DMF abụọ na atọ NO3 (-) anions na 1 na abụọ bidentate N, N-donor dppz ligands na atọ NO3 ( -) anions na 2. Mgbagwoju anya 3 na 4 na-egosi nhazi nke mono-capped octahedron asaa na-achịkọta ebe Tb (3+) nwere bidentate dpq/dppz ligands, DMF abụọ na atọ Cl (-) anions.Ụlọ ndị ahụ na-enwu enwu nke ukwuu n'okike na-egosi mbufe foto na-atọ ụtọ nke ọma site na antenna dpq/dppz gaa na Ln (3+) iji mepụta steeti nwere obi ụtọ dị ogologo ndụ maka mgbanwe f → f.Ihe nleba anya luminescence edoziziri oge nke ogige 1-4 na-egosi ụdị ikuku ikuku dị warara sitere na (5)D0 → (7)F(J) na (5)D4 → (7)F (J) ff ntụgharị nke Eu (3) +) na Tb (3+) ion n'otu n'otu.Ekpebiri ọnụọgụ nke mkpụrụ ndụ mmiri dị n'ime (q) site na nha ndụ luminescence na H2O na D2O na-akwado mmeghachi omume mgbanwe ligand na mmiri na ngwọta.Ụlọ ndị ahụ na-egosipụta mmasị dị ukwuu na CT-DNA na-enye ụkpụrụ na-ejikọta mgbe niile na 1.0 × 10 (4) -6.1 × 10 (4) M (-1) n'usoro 2, 4 (dppz)> 1, 3 (dpq).Data njide DNA na-egosi njikọ DNA groove na-ejikọta na akụkụ akụkụ nke mgbagwoju anya nke ogige.Mgbagwoju anya niile na-egosikwa ike ejikọta (K(BSA) ~ 10(5) M(-1)) na protein nke serum albumin (BSA).Ịdị ike nke ogologo oge luminescence spectral bands na-abawanye nke ọma site na ntinye DNA na-abawanye na ebe nchekwa mmiri n'ihi ngbanwe nke mmiri a na-ekekọta na mmekọrịta ya na DNA, si otú a na-ebelata nkwụsị na-adịghị radiative site na OH oscillator.Mgbagwoju anya 1-4 nke ọma na-ekekọta supercoiled (SC) ds-DNA na okirikiri ya nicked (NC) na mkpughe na ọkụ UV-A nke 365 nm site na nhazi nke oxygen singlet ((1) O2) na hydroxyl radicals (HO˙) dị ka ụdị oxygen na-emeghachi omume na mkpokọta micromolar n'okpuru ọnọdụ physiological.