Near-Infrared and Shortwave Infrared Emitting Fluorescent Nanoparticles

We have been developing new fluorescent nanoparticles that show fluorescence in near-infrared and shortwave infrared wavelength regions for bioimaging applications.

We have been developing a range of fluorescent nanoparticles using conjugated polymers as well as small organic molecules. The research topic includes

  • Development of ultrasmall (3 nm in diameter) polymer dots that show far-red/near-infrared fluorescence with high photostability
  • Development of ulrasmall and bright shortwave infrared emitting polymer dots through rational molecular design and fabrication
  • Development of J-aggregates dots, a new class of fluorescent nanoparticles with narrow spectral width and very high fluorescent brigthness
  • Development of hybrid fluorescent nanomaterials of carbon nanotubes and polymer dots/J-aggregates dots
Prof. Tsuyoshi Michinobu (Tokyo Institute of Technology)

Controlling Photophysical Properties of Ultrasmall Conjugated Polymer Nanoparticles through Polymer Packing          Piwoński H., Michinobu T., Habuchi S.          Nature Communications 2017, 8, 15256


Improved Fluorescence and Brightness of Near-Infrared and Shortwave Infrared Emitting Polymer Dots for Bioimaging Applications          Piwoński H., Li W., Wang Y., Michinobu T., Habuchi S          ACS Applied Polymer Materials In press