Cation-π-interaction promoted aggregation of aromatic molecules and energy transfer within Y zeolites

K. J. Thomas, R. B. Sunoj, J. Chandrasekhar, Vaidhyanathan Ramamurthy

Research output: Contribution to journalArticle

53 Citations (Scopus)

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 π-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 - π-interaction results in stabilization of the π-stacked benzene dimer. Results of MP2 calculations are consistent with the formation of ground-state π-stacked aggregates of naphthalene molecules within Y zeolites.

Original languageEnglish
Pages (from-to)4912-4921
Number of pages10
JournalLangmuir
Volume16
Issue number11
DOIs
StatePublished - May 30 2000
Externally publishedYes

Fingerprint

Zeolites
zeolites
Energy transfer
Cations
Agglomeration
Positive ions
energy transfer
cations
Molecules
molecules
interactions
Naphthalene
Benzene
naphthalene
Dimers
Ground state
benzene
dimers
ground state
Stabilization

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Cation-π-interaction promoted aggregation of aromatic molecules and energy transfer within Y zeolites. / Thomas, K. J.; Sunoj, R. B.; Chandrasekhar, J.; Ramamurthy, Vaidhyanathan.

In: Langmuir, Vol. 16, No. 11, 30.05.2000, p. 4912-4921.

Research output: Contribution to journalArticle

Thomas, K. J. ; Sunoj, R. B. ; Chandrasekhar, J. ; Ramamurthy, Vaidhyanathan. / Cation-π-interaction promoted aggregation of aromatic molecules and energy transfer within Y zeolites. In: Langmuir. 2000 ; Vol. 16, No. 11. pp. 4912-4921.
@article{2e38ac89006e45ee944a0e50d16668df,
title = "Cation-π-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 π-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 - π-interaction results in stabilization of the π-stacked benzene dimer. Results of MP2 calculations are consistent with the formation of ground-state π-stacked aggregates of naphthalene molecules within Y zeolites.",
author = "Thomas, {K. J.} and Sunoj, {R. B.} and J. Chandrasekhar and Vaidhyanathan Ramamurthy",
year = "2000",
month = "5",
day = "30",
doi = "10.1021/la991654s",
language = "English",
volume = "16",
pages = "4912--4921",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "11",

}

TY - JOUR

T1 - Cation-π-interaction promoted aggregation of aromatic molecules and energy transfer within Y zeolites

AU - Thomas, K. J.

AU - Sunoj, R. B.

AU - Chandrasekhar, J.

AU - Ramamurthy, Vaidhyanathan

PY - 2000/5/30

Y1 - 2000/5/30

N2 - 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 π-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 - π-interaction results in stabilization of the π-stacked benzene dimer. Results of MP2 calculations are consistent with the formation of ground-state π-stacked aggregates of naphthalene molecules within Y zeolites.

AB - 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 π-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 - π-interaction results in stabilization of the π-stacked benzene dimer. Results of MP2 calculations are consistent with the formation of ground-state π-stacked aggregates of naphthalene molecules within Y zeolites.

UR - http://www.scopus.com/inward/record.url?scp=0033730283&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033730283&partnerID=8YFLogxK

U2 - 10.1021/la991654s

DO - 10.1021/la991654s

M3 - Article

AN - SCOPUS:0033730283

VL - 16

SP - 4912

EP - 4921

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 11

ER -