Stopped-flow kinetic analysis of the interaction of cyclo[8]pyrrole with anions

Elizabeth Karnas; Sung Kuk Kim; Kenneth A. Johnson; Jonathan L. Sessler; Kei Ohkubo; Shunichi Fukuzumi

doi:10.1021/ja107471x

Stopped-flow kinetic analysis of the interaction of cyclo[8]pyrrole with anions

Elizabeth Karnas, Sung Kuk Kim, Kenneth A. Johnson, Jonathan L. Sessler, Kei Ohkubo, Shunichi Fukuzumi

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The on and off rates corresponding to the binding of two test anions (acetate, AcO^-, and dihydrogen phosphate, H₂PO ₄^-, studied as their tetrabutylammonium salts) to diprotonated cyclo[8]pyrrole have been determined in CH₃CN using stopped-flow analyses carried out at various temperatures. For dihydrogen phosphate, this afforded the activation enthalpies and entropies associated with both off and on processes. The different dynamic behavior seen for these test anions underscores the utility of kinetic analyses as a possible new tool for the advanced characterization of anion receptors.

Original language	English
Pages (from-to)	16617-16622
Number of pages	6
Journal	Journal of the American Chemical Society
Volume	132
Issue number	46
DOIs	https://doi.org/10.1021/ja107471x
State	Published - 24 Nov 2010

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title = "Stopped-flow kinetic analysis of the interaction of cyclo[8]pyrrole with anions",

abstract = "The on and off rates corresponding to the binding of two test anions (acetate, AcO-, and dihydrogen phosphate, H2PO 4-, studied as their tetrabutylammonium salts) to diprotonated cyclo[8]pyrrole have been determined in CH3CN using stopped-flow analyses carried out at various temperatures. For dihydrogen phosphate, this afforded the activation enthalpies and entropies associated with both off and on processes. The different dynamic behavior seen for these test anions underscores the utility of kinetic analyses as a possible new tool for the advanced characterization of anion receptors.",

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AU - Karnas, Elizabeth

AU - Kim, Sung Kuk

AU - Johnson, Kenneth A.

AU - Sessler, Jonathan L.

AU - Ohkubo, Kei

AU - Fukuzumi, Shunichi

PY - 2010/11/24

Y1 - 2010/11/24

N2 - The on and off rates corresponding to the binding of two test anions (acetate, AcO-, and dihydrogen phosphate, H2PO 4-, studied as their tetrabutylammonium salts) to diprotonated cyclo[8]pyrrole have been determined in CH3CN using stopped-flow analyses carried out at various temperatures. For dihydrogen phosphate, this afforded the activation enthalpies and entropies associated with both off and on processes. The different dynamic behavior seen for these test anions underscores the utility of kinetic analyses as a possible new tool for the advanced characterization of anion receptors.

AB - The on and off rates corresponding to the binding of two test anions (acetate, AcO-, and dihydrogen phosphate, H2PO 4-, studied as their tetrabutylammonium salts) to diprotonated cyclo[8]pyrrole have been determined in CH3CN using stopped-flow analyses carried out at various temperatures. For dihydrogen phosphate, this afforded the activation enthalpies and entropies associated with both off and on processes. The different dynamic behavior seen for these test anions underscores the utility of kinetic analyses as a possible new tool for the advanced characterization of anion receptors.

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JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 46

ER -

Stopped-flow kinetic analysis of the interaction of cyclo[8]pyrrole with anions

Abstract

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