Journal of Inorganic Materials

• Research Paper • Previous Articles     Next Articles

Aqueous Phase Preparation of CdTe Nanorods and its Application
in Recognition of Cu2+ Ions

ZHENG Ai-Fang1, CHEN Jin-Long2   

  1. 1.Department of Life Sciences, Anqing Normal College, Anqing 246011, China; 2. School of Chemistry & Chemical Engineering, Anqing Normal College, Anqing 246011, China
  • Received:2008-07-01 Revised:2008-10-08 Published:2009-03-20 Online:2009-03-20

Abstract: Opticaltunable CdTe nanorods were synthesized in aqueous solution using thioglycoclic acid and L-cysteine as co-stabilizing reagents. CdTe nanorods with dualwavelength emission was appreciated as a novel fluorescent probe for copper ions. Copper ions display a significant quenching effect on the nanorods trap emission at 645nm and no effect on band-edge emission at 535nm. In a slight basic medium, the surface trap emission intensity of nanorods is proportional to the concentration of Cu2+ ion in the range from 0 to 2.8×10-6mol/L, and the corresponding limit of detection is 4.0×10-9mol/L. The mechanism of reaction between CdTe nanorods and Cu2+ ions are discussed in further.

Key words: CdTe nanorods, fluor escence probe, quench, Cu2+ ion

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