Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 1, Issue 18, Pages 2628-2632Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jz101006s
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Funding
- National Science Foundation [NSF-CHE-07-17518, NSF-CHE-08-48017]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0848017] Funding Source: National Science Foundation
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A thioxanthone derivative containing a covalently attached N-15-labeled nitroxide. was incarcerated into an octaacid nanocapsule. Photoexcitation of the thioxanthone chromophore generated electron spin polarization of the nitroxide. This spin polarization of the N-15-labeled nitroxide was transferred through the walls of the carcerand to a N-14-labeled nitroxide in external bulk solvent, a process that was directly observed by time-resolved EPR spectroscopy. The efficiency of the communication between the incarcerated guest and molecules in the bulk solvent was shown to be controlled by supramolecular factors such as Coulombic attraction and repulsion between the guest@host complex and charged molecules in the bulk solvent phase.
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