Sorry, you need to enable JavaScript to visit this website.

Electrospun dye-doped polymer nanofibers emitting in the near infrared

TitleElectrospun dye-doped polymer nanofibers emitting in the near infrared
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2007
AuthorsCamposeo, A., Di Benedetto Francesca, Stabile R., Cingolani R., and Pisignano D.
JournalApplied Physics Letters
Volume90
ISSN00036951
Keywordsdiffusion, Infrared light sources, Laser pulses, Nanofibers, Near infrared fluorescent nanofibers, Near infrared spectroscopy, Oxygen, oxygen diffusion, Photoluminescence, Photostability, Polymers, Polymethyl methacrylates
Abstract

The authors report on the fabrication and characterization of near infrared fluorescent nanofibers. The nanofibers are composed by an organic dye dispersed in a poly(methylmethacrylate) inert matrix and realized by electrospinning. They exhibit diameters down to 70 nm, with average values in the range of 170-480 nm, depending on the process parameters, and photoluminescence emission peaked at 865 nm. The temporal behavior of the emission under ultraviolet excitation in air can be described by an oxygen diffusion model with a characteristic time τ in the range of 400-1200 s, depending on the fiber size, which correspond to a photostability longer than (0.4-1.2) × 105 excitation laser pulses. These results open the way for large volume and cost-effective realization of infrared-emitting nanofibers, which are promising candidates as nanoscale infrared light sources. © 2007 American Institute of Physics.

Notes

cited By 43

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-34047271450&doi=10.1063%2f1.2720262&partnerID=40&md5=e848a22fd9f8ba7d59e7a18a547bccae
DOI10.1063/1.2720262
Citation KeyCamposeo2007