International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2569

Short Communication

Laser-induced emission from dye-doped nanoparticle aggregates of poly (DL-lactide-co-glycolide)

Honoh Suzuki,* I-Yin Sandy Lee, and Naomi Maeda
Department of Chemistry, University of Toyama, 3190 Gofuku Toyama 930-8555 Japan.
Email: [email protected]

  •  Accepted: 24 January 2008
  •  Published: 31 January 2008


Stable nanoparticles of poly (DL-lactide-co-glycolide) (PLGA) have been prepared, which is photosensitized with near-infrared chromophores doped into the particle. Laser-induced white-light emission is observed from aggregates of the dye-doped nanoparticles, which shows spatial interference of nonlinear optical processes as the underlying mechanism. The accompanied break-up of the aggregates is promising as a possible mechanism for laser-triggered release of drugs. 


Key words: Nanoparticles, poly(DL-lactide-co-glycolide), aggregates, near-infrared laser, multiple scattering