Organic molecular sensing by single metal porphyrin nanoparticles

Takayuki Uwada; Yoichiroh Hosokawa; Noriko Takizawa; Kazunori Okano; Hiroshi Masuhara

doi:10.1117/12.762445

22 February 2008 Organic molecular sensing by single metal porphyrin nanoparticles

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

Proceedings Volume 6865, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications V; 68650I (2008) https://doi.org/10.1117/12.762445
Event: SPIE BiOS, 2008, San Jose, California, United States

Abstract

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.

Citation Download Citation

Takayuki Uwada, Yoichiroh Hosokawa, Noriko Takizawa, Kazunori Okano, and Hiroshi Masuhara "Organic molecular sensing by single metal porphyrin nanoparticles", Proc. SPIE 6865, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications V, 68650I (22 February 2008); https://doi.org/10.1117/12.762445

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available