Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 116, Issue 41, Pages 21706-21716Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp3073188
Keywords
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Funding
- Region Aquitaine [20051304008AB]
- GIS AMA
- CNRS
- French Ministry of Education and Research
- [ANR-06-JCJC-0030]
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The co-self-assembly of a blue-light emitting organogelator and specifically designed green and red emitting hosts yields light-harvesting nanofibers with tunable emissive properties. In particular, under near-UV excitation white-light emission is achieved in organogels and their constituting nanofibers as demonstrated by confocal fluorescence microspectroscopy. Steady-state and time-resolved emission spectroscopies reveal that color tuning in three component nanofibers is achieved exploiting excitation energy transfers occurring between the blue-emitting anthracene derivative and the green- and red-emitting tetracenes, whereas the latter emission is further sensitized through a cascade blue-to-green-to-red transfer sequence. Moreover, excitation energy migrates through the blue-emitting components by exciton hopping before being transferred to the acceptors, thus contributing to the light-harvesting process.
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