Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (04): 725-728.doi: 10.3866/PKU.WHXB20080432

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Effect of Amino Acid on the Fluorescence of CdTe Quantum Dots

WEN Li-Qun; LV Jian-Quan; LV Han-Qing; ZHOU Xing-Wang; SUN Ting-Quan   

  1. Hubei Key Laboratory of Bioanalytical Technique, Hubei Normal University, Huangshi 435002, Hubei Province, P. R. China; College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
  • Received:2007-10-17 Revised:2007-12-10 Published:2008-04-07
  • Contact: LV Jian-Quan

Abstract: Water-soluble CdTe quantum dots (GdTe-Qs) were prepared using mercaptocarboxylic acid as stabilizer, and effects of pH and amino acids on fluorescence of CdTe-QDs were investigated. The results revealed that the fluorescence of the CdTe-QDs varied with the change of pH, and the alanine and serine could quench the fluorescence while cysteine enhanced the fluorescence.

Key words: CdTe quantum dots, Amino acid, Fluorescence


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