Guo-Xi Liang et al 2009 Nanotechnology 20 415103 doi:10.1088/0957-4484/20/41/415103
Guo-Xi Liang, Miao-Miao Gu, Jian-Rong Zhang1 and Jun-Jie Zhu1
Show affiliationsA facile method is developed for the preparation of high-quality, water-soluble, and near-infrared (NIR)-emitting CdSeTe alloyed quantum dots (AQdots) with L-cysteine as the capping agent. By changing the size and the composition of AQdots the photoluminescent quantum yield (QY) can reach as high as 53% and the emission color can be tuned between visible and NIR regions (580–814 nm). Furthermore, the prepared NIR-emitting AQdots have been successfully applied for HL-60 cell imaging and glucose and cholesterol assay, which demonstrates the great potential of the AQdots for biological applications.
Issue 41 (14 October 2009)
Received 21 July 2009, in final form 18 August 2009
Published 18 September 2009
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