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Studies Conducted at Soochow University on Luminescence Recently Reported

January 31, 2014

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Luminescence have been published. According to news reporting originating in Suzhou, People's Republic of China, by NewsRx journalists, research stated, "Water-soluble CdSe quantum dots (QDs) have been prepared by using L-cysteine as the stabilizer in an aqueous phase under the optimized conditions. The characteristics and shapes of CdSe QDs have been proposed on the basis of UV-Vis and fluorescence spectra."

The news reporters obtained a quote from the research from Soochow University, "A rapid analytical method for electrochemiluminescence (ECL) determination of nitrite has been developed on the basis of the quenching effect on anodic ECL emission of CdSe QDs under the optimum experimental conditions. In a neutral system and at a relatively low potential (+0.960V), the ECL emission of CdSe QDs could be greatly enhanced by sulfite and could be gradually quenched by nitrite at an indium tin oxide (ITO) electrode."

According to the news reporters, the research concluded: "The proposed method may allow the measurement of nitrite ranging from 1M to 0.5mM with a correlation coefficient of 0.9956 (n=10) and a detection limit of 0.2M (3 sigma), and the relative standard deviation for 10M nitrite (n=9) is 1.72 %. The proposed method could be adopted for the sensitive detection of ECL quenchers by using nitrite as a model molecule."

For more information on this research see: Preparation of water-soluble CdSe quantum dots and its application for nitrite detection in the anodic electrochemiluminescence. Luminescence, 2013;28(4):551-556. Luminescence can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell -; Luminescence -

Our news correspondents report that additional information may be obtained by contacting X. Yao, Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, People's Republic of China. Additional authors for this research include P.P. Yan, K. Zhang and J.G. Li (see also Luminescence).

Keywords for this news article include: Asia, Suzhou, Luminescence, Quantum Dots, Quantum Physics, People's Republic of China

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Source: Science Letter

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