journal6 ›› 2011, Vol. 32 ›› Issue (1): 93-97.

• Chemistry and chemical engineering • Previous Articles     Next Articles

Surface-Modification of CdTe Quantum Dots with Bovine Serum Albumin and Analytical Application


  1.  (College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China)
  • Online:2011-01-25 Published:2012-04-10

Abstract: Mercaptoacetic acid-stabilized CdTe quantum dots were prepared by hydrothermal synthesis method.The CdTe quantum dots exhibited absorption at 502 nm and fluorescence emission at 538 nm,respectively.When surface-modification of CdTe quantum dots were replaced with BSA,absorption peak and the fluorescence peak remained the same,while absorption intensity and the fluorescence emission intensity increased.The effect of pH、temperature and ion strength on fluorescence intensity were discussed.Under the optimal conditions,a mass concentration of BSA in the range of 0.05~1.0 mg/L shows a linear relationship with the fluorescence intensity increasing value of CdTe quantum dots,with a detection limit of 0.011 7 mg/L.The proposed method was applied to detection of the concentration of BSA in buffer solution.

Key words: CdTe, quantum dots, bovine serum albumin, surface-modification

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