Calibration of dynamic molecular rule based on plasmon coupling between gold nanoparticles

被引:496
作者
Reinhard, BM
Siu, M
Agarwal, H
Alivisatos, AP
Liphardt, J [1 ]
机构
[1] Univ Calif Berkeley, Dept Phys, Biophys Grad Program, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
[3] Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA
[4] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA
关键词
D O I
10.1021/nl051592s
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Pairs of noble metal nanoparticles can be used to measure distances via the distance dependence of their plasmon coupling. These "plasmon rulers" offer exceptional photostability and brightness; however, the advantages and limitations of this approach remain to be explored. Here we report detailed plasmon peak versus separation calibration curves for 42- and 87-nm-diameter particle pairs, determine their measurement errors, and describe experimental procedures to improve their performance in biology, nanotechnology, and materials sciences.
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页码:2246 / 2252
页数:7
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