CHIRAL FLUORESCENT GOLD NANOCLUSTERS
Chiral fluorescent metal nanoclusters are worthy of attention owing to their potential applications in chemistry and biology. Here, fluorescent gold nanoclusters (Au NCs) reduced by L-histidine (L-his) and D-histidine (D-his) respectively were synthesized and observed to be optically active. Circular dichroism (CD) spectra revealed a distinct mirror image relationship between the L-his-Au NCs and the D-his-Au NCs. And the CD signals of both Au NCs in the range of 260 ran to 360 ran differed from those of the free L-his and D-his. While the Au NCs reduced by DL-histidine (DL-his) showed no CD activity. Lhis-Au NCs and D-his-Au NCs as well as the DL-his-Au NCs exhibited the same fluorescence emission spectra when excited at 386 nm. The origin of the circular dichroism of the Au NCs is discussed preliminarily.
Gold nanoclusters Chiral Fluorescent Histidine Circular dichroism
Zhao Xijuan Huang Chengzhi
Education Ministry Key Laboratory on Luminescence Real-Time Analysis College of Chemistry and Chemic Education Ministry Key Laboratory on Luminescence Real-Time Analysis College of Pharmaceutical Scien
国际会议
重庆
英文
82-83
2011-10-28（万方平台首次上网日期，不代表论文的发表时间）