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Findings from Southeast University in the Area of Colloid and Interface Science Reported

January 31, 2014



By a News Reporter-Staff News Editor at Science Letter -- Current study results on Science have been published. According to news originating from Nanjing, People's Republic of China, by NewsRx correspondents, research stated, "Though the investigation on controlling the fluorescence properties of nanocrystals (NCs) with single emission has been widely reported, few efforts were spent on adjusting the fluorescence properties of NCs with multiple emission peaks. In this work, we successfully synthesized multicolor MnSe:ZnSe NCs with multiple emission peaks and developed a simple and accurate method to realize photoluminescence (PL) spectra (or color) adjustment."

Our news journalists obtained a quote from the research from Southeast University, "The PL of MnSe:ZnSe NCs has two distinct emission peaks, the trap emission of ZnSe at 475nm and Mn(2+)-induced emission at 585nm. By adjusting the nucleation temperature, the emission color of the NCs can be encoded according to the ratio of the emission intensities at 475 and 585nm. With the nucleation temperature rising from 0 to 70C, the PL ratio between trap emission and Mn(2+)-induced emission can be consecutively changed from (1, 3) to (1, 0.5). In addition, the trap state is deeply inside the NCs rather than on NCs surface so that the trap emission is stable during environment change."

According to the news editors, the research concluded: "Thus, these MnSe:ZnSe NCs hold great promise as novel single-particle coding labels for biomedical imaging."

For more information on this research see: One-pot synthesis of multicolor MnSe:ZnSe nanocrystals for optical coding. Journal of Colloid and Interface Science, 2014;415():7-12. (Elsevier - www.elsevier.com; Journal of Colloid and Interface Science - www.elsevier.com/wps/product/cws_home/622861)

The news correspondents report that additional information may be obtained from Y. Wang, Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096, People's Taiwan. Additional authors for this research include C. Wang, S. Xu, H. Shao, Y. Jiang, F. Bo, Z. Wang and Y. Cui (see also Science).

Keywords for this news article include: Asia, Nanjing, Science, People's Republic of China.

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Source: Science Letter


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