Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 130, Issue 33, Pages 10970-10976Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja801178p
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Funding
- Alexander von Humboldt Foundation for Postdoctoral
- FP6 Network of Excellence Frontiers [NMP4-CT-2004-500328 FRONTIERS NoE]
- Westfalische Wilhelms Universitat Munster
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Temporally and spectrally resolved confocal microscopy has been used to explore the behavior of pyronine intercalated zeolite L crystals at different loadings. The low pyronine loading of 0.6% exhibits photophysical behavior similar to that of the free molecule in solution, indicating molecules are isolated from each other in the crystal channels. The higher loading of 20% results in a dye gradient along the channel axis, and the presence of an additional red-shifted spectroscopic transition, with shorter lifetimes. The new band is assigned to an inline arrangement of the molecules undergoing a J-aggregate-type coupling, a process so far not observed in subnanometer channels.
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