Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (8): 1818.doi: 10.7503/cjcu20130098

• Article: Inorganic Chemistry • Previous Articles     Next Articles

Study of Interaction Between Bovine Serum Albumin and Cobalt Complexes of Phenanthroline and Nitrilotriacetate by Fluorescence Spectrometry

LIN Hai-Bin1, ZHENG Lin1, LIN Yu-Qin1, ZHOU Zhao-Hui2   

  1. 1. Department of Chemistry and Environmental Science, Fujian Province University Key Laboratory of Analytical Science, Zhangzhou Teachers College, Zhangzhou 363000, China;
    2. State Key Laboratory for Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005, China
  • Received:2013-01-28 Online:2013-08-10 Published:2013-07-19

Abstract:

Cobalt complexes [Co(phen)2Cl2(1), Na[Co(nta)]·H2O(2), [Co(phen)2(H2O)2]·[Co(nta)(phen)]2·12H2O([STHZ]3[STBZ])] (phen: phenanthroline, nta: nitrilotriacetate) were synthesized in solution, and the structure of complex 3 was characterized by single-crystal X-ray diffraction analysis(XRD). It crystallized in the triclinic system, space group P1 with a=1.2448(2) nm, b=1.5898(3) nm, c=1.7412(3) nm, α=91.746(3)°, β=97.807(3)°, γ=103.745(3)°, V=3.309(1) nm3. The interaction between bovine serum albumin(BSA) and complexes 1-3 was investigated with fluorescence spectra at room temperature. Fluorescence quenchings were shown as static quenching for complexes 1 and 3 based on the fluorescence spectrum at different temperatures. The binding constant, binding sites and thermodynamic functions were calculated. The interaction sites, binding force and distance for BSA with complexes 1 and 3 were discussed respectively.

Key words: Cobalt(Ⅱ), Phenanthroline, Nitrilotriacetic acid, Bovine serum albumin(BSA), Fluorescence spectrum

CLC Number: 

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