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Title: Cation-{pi}-interaction promoted aggregation of aromatic molecules and energy transfer within Y zeolites

Abstract

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.

Authors:
; ; ;
Publication Date:
Research Org.:
Tulane Univ., New Orleans, LA (US)
Sponsoring Org.:
USDOE
OSTI Identifier:
20080285
Resource Type:
Journal Article
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 16; Journal Issue: 11; Other Information: PBD: 30 May 2000; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ZEOLITES; ENERGY TRANSFER; AROMATICS; AGGLOMERATION; NAPHTHALENE

Citation Formats

Thomas, K.J., Sunoj, R.B., Chandrasekhar, J., and Ramamurthy, V. Cation-{pi}-interaction promoted aggregation of aromatic molecules and energy transfer within Y zeolites. United States: N. p., 2000. Web. doi:10.1021/la991654s.
Thomas, K.J., Sunoj, R.B., Chandrasekhar, J., & Ramamurthy, V. Cation-{pi}-interaction promoted aggregation of aromatic molecules and energy transfer within Y zeolites. United States. doi:10.1021/la991654s.
Thomas, K.J., Sunoj, R.B., Chandrasekhar, J., and Ramamurthy, V. Tue . "Cation-{pi}-interaction promoted aggregation of aromatic molecules and energy transfer within Y zeolites". United States. doi:10.1021/la991654s.
@article{osti_20080285,
title = {Cation-{pi}-interaction promoted aggregation of aromatic molecules and energy transfer within Y zeolites},
author = {Thomas, K.J. and Sunoj, R.B. and Chandrasekhar, J. and Ramamurthy, V.},
abstractNote = {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.},
doi = {10.1021/la991654s},
journal = {Langmuir},
issn = {0743-7463},
number = 11,
volume = 16,
place = {United States},
year = {2000},
month = {5}
}