Organic molecular sensing by single metal porphyrin nanoparticles

Takayuki Uwada*, Yoichiroh Hosokawa, Noriko Takizawa, Kazunori Okano, Hiroshi Masuhara

*Corresponding author for this work

研究成果: Conference contribution同行評審

1 引文 斯高帕斯(Scopus)

摘要

We demonstrate preparations of zinc porphyrin nanoparticles by reprecipitation method and their spectroscopic analysis by dark-field light scattering microspectroscopy. The size distribution of the prepared nanoparticles was 80-150 nm. By using dark-field illumination the nanoparticles could be observed as bright points in dark background and could be examined by their Rayleigh scattering spectra at single particle level. The spectra differed from particle to particle, which would be ascribed to their size and crystalline phase difference. Thus we have performed this single particle spectroscopic technique to remove the ambiguity about the spectroscopic information owing to distributions of particles and to improve the space selectivility. In addition, we have successfully demonstrated the detection of amine molecules in water at single particle level. These results indicate that the detection technique using the single porphyrin nanoparticles can be applied to chemical and biological sensors with nanometer scale.

原文English
主出版物標題Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications V
DOIs
出版狀態Published - 21 四月 2008
事件Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications V - San Jose, CA, United States
持續時間: 21 一月 200823 一月 2008

出版系列

名字Progress in Biomedical Optics and Imaging - Proceedings of SPIE
6865
ISSN(列印)1605-7422

Conference

ConferenceNanoscale Imaging, Sensing, and Actuation for Biomedical Applications V
國家United States
城市San Jose, CA
期間21/01/0823/01/08

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