%0 Journal Article
%T Free-standing microcrystals of a fluorescent organic dye: Preparation and spectroscopic study
%A Mouhammad Abyan
%A Liliana B rl
%A Franck Bertorelle
%A Fernanda Rodrigues
%A Suzanne Fery-Forgues
%J International Journal of Photoenergy
%D 2006
%I Hindawi Publishing Corporation
%R 10.1155/ijp/2006/30937
%X Suspensions of microcrystals were obtained from an organic fluorescent dye, 4-n-octylamino-7-nitrobenz-2-oxa-1,3-diazole, by reprecipitation in water in the presence of various macromolecules: anionic or cationic PAMAM dendrimer, poly(acrylic acid, sodium salt), poly(acrylamide), and calf thymus DNA. The use of these additives allowed the size and shape of the microcrystals to be controlled. A study by UV/vis absorption and fluorescence spectroscopy revealed some common points, but also some interesting differences, in the optical behaviour of the five samples.
%U http://www.hindawi.com/journals/ijp/2006/030937/abs/