Journal
SCIENCE
Volume 309, Issue 5743, Pages 2037-2039Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1116579
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Despite recent strides in the synthesis of elaborate nanometer-scale molecular hosts, the internal structure of these self-assembled cages remains ill, characterized. We used fluorescent probe molecules, pyrene butyric acid (PBA), as guests in C-hexylpyrogallol[4]arene capsules to relay information about the chemical environment on the interior of the assemblies. Spectroscopic and single-crystat x-ray diffraction studies show that, in both solution and the solid state, the host can encapsulate two PBA guests and keep them well separated through specific interactions with the capsule watts.
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