Thomas, KJ and Sunoj, RB and Chandrasekhar, J and Ramamurthy, V (2000) Cation-\pi-Interaction Promoted Aggregation of Aromatic Molecules and Energy Transfer within Y Zeolites. In: Langmuir, 16 (11). pp. 4912-4921.
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Photophysical studies of naphthalene confirm that aromatic molecules tend to aggregate within cation exchanged Y zeolites. Ground-state aggregation is traced to the presence of cation-aromatic pi-interaction. Solvents that can coordinate to the cation “turn off” the cation-aromatic interaction, and consequently aggregation does not occur in zeolites that are impregnated with the above solvents. The solvent that exhibits a maximum in such an effect is water. MP2 calculations on cation-benzene dimer indicate that cation-\pi-interaction results in stabilization of the \pi-stacked benzene dimer. Results of MP2 calculations are consistent with the formation of ground-state \pi-stacked aggregates of naphthalene molecules within Y zeolites.
|Item Type:||Journal Article|
|Additional Information:||Copyright of the article belongs to American Chemical Society|
|Department/Centre:||Division of Chemical Sciences > Organic Chemistry|
|Date Deposited:||15 Dec 2008 11:23|
|Last Modified:||19 Sep 2010 04:53|
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