White-light-emitting self-assembled nanofibers and their evidence by microspectroscopy of individual objects
| Autor: | Alexandre G. L. Olive, Hakim Rahma, André Del Guerzo, Guillaume Raffy, Christian Schäfer, Carlo Giansante, Min-Tzu Kao |
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| Přispěvatelé: | Giansante, Carlo, Raffy, Guillaume, Schäfer, Christian, Rahma, Hakim, Kao, Min Tzu, Olive, Alexandre G. L, Del Guerzo, André |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Naphthacene
Naphthacenes Light Confocal Nanofibers Nanotechnology Biochemistry Catalysis chemistry.chemical_compound Colloid and Surface Chemistry Microscopy Solution Kinetic Anthracene Microscopy Confocal Molecular Structure business.industry General Chemistry Nanofiber Fluorescence Solutions Kinetics Wavelength Tetracene chemistry Energy Transfer Optoelectronics business Excitation |
| Popis: | The self-assembly of a blue-emitting light-harvesting organogelator and specifically designed highly fluorescent tetracenes yields nanofibers with tunable emissive properties. In particular, under near-UV excitation, white light emission is achieved in organogels and dry films of nanofibers. Confocal fluorescence microspectroscopy demonstrates that each individual nanofiber emits white light. A kinetic study shows that an energy transfer (ET) occurs between the blue-emitting anthracene derivative and the green- and red-emitting tetracenes, while inter-tetracene ETs also take place. Moreover, microscopy unravels that the nanofibers emit polarized emission in the blue spectral region, while at wavelengths higher than 500 nm the emission is not significantly polarized. |
| Databáze: | OpenAIRE |
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