Free-standing microcrystals of a fluorescent organic dye: Preparation and spectroscopic study
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...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2006-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/IJP/2006/30937 |
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| Summary: | 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. |
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| ISSN: | 1110-662X 1687-529X |