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Communication
Chem. Commun., 2010, 46, 225 - 227, DOI: 10.1039/b920605a
Supramolecular photocatalysis by confinement—photodimerization of coumarins within cucurbit[8]urils
Barry C. Pemberton, Nilotpal Barooah, D. K. Srivatsava and J. Sivaguru
Cucurbit[8]uril (as low as 10 mol%) acts as a supramolecular catalytic nanoreaction vessel and facilitates the photodimerization of coumarins in water leading to syn dimers. Saturation kinetics shows a sigmoidal dependence with a turnover number of 3.4 min-1 and a Hill constant of 1.8 indicating a co-operative mechanism in the catalytic process.
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