Abstract
Quinacridone nanoparticles with a mean size of about 200 nm are successfully prepared using nanosecond near-infrared (NIR) laser ablation of its microcrystalline powders in heavy water. The absorption spectra of the formed colloidal solutions depend on the excitation wavelengths, which is eventually ascribed to number and energy of absorbed photons. β-carotene has low photostability and is easily decomposed upon UV/VIS laser ablation of its solid, while its nanoparticles are prepared utilizing this NIR laser ablation technique. The advantage of nanoparticle preparation by NIR laser ablation is discussed.
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Yuyama, K., Sugiyama, T., Asahi, T. et al. Nanoparticle preparation of quinacridone and β-carotene using near-infrared laser ablation of their crystals. Appl. Phys. A 101, 591–596 (2010). https://doi.org/10.1007/s00339-010-5922-7
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DOI: https://doi.org/10.1007/s00339-010-5922-7