Portal de Periódicos da CAPES

In Situ Diagnostics of the Crystalline Nature of Single Organic Nanocrystals by Nonlinear Microscopy

2004; American Physical Society; Volume: 92; Issue: 20 Linguagem: Inglês

10.1103/physrevlett.92.207401

1092-0145

Sophie Brasselet, Véronique Le Floc’h, François Treussart, Jean-François Roch, Joseph Zyss, Estelle Appert, Alain Ibanez,

Porphyrin and Phthalocyanine Chemistry

We elucidate the crystalline nature and the three-dimensional orientation of isolated organic nanocrystals embedded in a sol-gel matrix, using a polarized nonlinear microscopy technique that combines two-photon fluorescence and second harmonic generation. This technique allows the distinction between monocrystalline structures and nanoscale polycrystalline aggregates responsible for incoherent second harmonic signals.