Size dependent optical properties of quinacridonequinone nanoparticles prepared by liquid laser ablation in water

Autor:	Ikuko Akimoto, Ping Gu, Nobuhiko Ozaki, Masahiro Ohata
Rok vydání:	2012
Předmět:	Materials science Laser ablation Exciton Physics::Medical Physics Analytical chemistry Physics::Optics General Physics and Astronomy Nanoparticle Fluence Blueshift Colloid Physical and Theoretical Chemistry Absorption (electromagnetic radiation) Surface states
Zdroj:	Chemical Physics Letters. 552:102-107
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2012.09.048
Popis:	We investigated optical properties of colloidal solutions of nanoparticles prepared by laser ablation of quinacridonequinone powder in a poor solvent, water. Blue shift of the absorption peak energy was observed corresponding to the increase of laser fluence or to the prolonged irradiation time. For a series of colloidal solutions, we found a linear correlation between the blue shift of the absorption peak energy and the decrease in the diameter of the nanoparticles. The blue shift is considered to be due to the surface state, such as surface excitons or bond modified surface states.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::297e44496d0a99993b3786f089214c82 https://doi.org/10.1016/j.cplett.2012.09.048 Zobrazit plný text záznamu Full Text from ScienceDirect