A kinetic study of guest displacement reactions on a host-guest complex with a photoswitchable calixarene

Letzel M, Schaefer C, Novara FR, Speranza M, Rozhenko AB, Schoeller W, Mattay J (2008)
JOURNAL OF MASS SPECTROMETRY 43(11): 1553-1564.

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Abstract
The displacement processes of several guests, incorporated in a calixarene host system, were investigated in the gas phase by electrospray ionization-Fourier transform-ion cyclotron resonance (ESI-FT-ICR) mass spectrometry. The complexes resulting from a resorcin[4]arene host with ammonia and sec-butylamine guests were isolated in an ICR-cell, separately using both states of the photos-witch as well as two reference systems for the open and closed forms of the photoswitchable host. The isolated complexes were forced to exchange the guest by using methylamine, ethylamine and sec-butylamine, resulting in different reaction rates for all the measured systems. Especially, the reaction rates of both states of the photoswitch are dependent on the provided guest. Potential side effects like proton exchanges were examined by an H/D-exchange experiment. The results were investigated and supported by quantum chemical calculations (DFT). Copyright (C) 2008 John Wiley & Sons, Ltd.
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Letzel M, Schaefer C, Novara FR, et al. A kinetic study of guest displacement reactions on a host-guest complex with a photoswitchable calixarene. JOURNAL OF MASS SPECTROMETRY. 2008;43(11):1553-1564.
Letzel, M., Schaefer, C., Novara, F. R., Speranza, M., Rozhenko, A. B., Schoeller, W., & Mattay, J. (2008). A kinetic study of guest displacement reactions on a host-guest complex with a photoswitchable calixarene. JOURNAL OF MASS SPECTROMETRY, 43(11), 1553-1564.
Letzel, M., Schaefer, C., Novara, F. R., Speranza, M., Rozhenko, A. B., Schoeller, W., and Mattay, J. (2008). A kinetic study of guest displacement reactions on a host-guest complex with a photoswitchable calixarene. JOURNAL OF MASS SPECTROMETRY 43, 1553-1564.
Letzel, M., et al., 2008. A kinetic study of guest displacement reactions on a host-guest complex with a photoswitchable calixarene. JOURNAL OF MASS SPECTROMETRY, 43(11), p 1553-1564.
M. Letzel, et al., “A kinetic study of guest displacement reactions on a host-guest complex with a photoswitchable calixarene”, JOURNAL OF MASS SPECTROMETRY, vol. 43, 2008, pp. 1553-1564.
Letzel, M., Schaefer, C., Novara, F.R., Speranza, M., Rozhenko, A.B., Schoeller, W., Mattay, J.: A kinetic study of guest displacement reactions on a host-guest complex with a photoswitchable calixarene. JOURNAL OF MASS SPECTROMETRY. 43, 1553-1564 (2008).
Letzel, Matthias, Schaefer, Christian, Novara, Francesca R., Speranza, Maurizio, Rozhenko, Alexander B., Schoeller, Wolfgang, and Mattay, Jochen. “A kinetic study of guest displacement reactions on a host-guest complex with a photoswitchable calixarene”. JOURNAL OF MASS SPECTROMETRY 43.11 (2008): 1553-1564.
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4 Citations in Europe PMC

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A light controlled cavitand wall regulates guest binding.
Berryman OB, Sather AC, Rebek J Jr., Chem. Commun. (Camb.) 47(2), 2011
PMID: 21116523
Photochromic resorcin[4]arenes: stabilization of intramolecular anthracene dimers in solution.
Schafer C, Rozhenko AB, Mattay J., Photochem. Photobiol. Sci. 8(8), 2009
PMID: 19639122
Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study.
Botta B, Fraschetti C, Novara FR, Tafi A, Sacco F, Mannina L, Sobolev AP, Mattay J, Letzel MC, Speranza M., Org. Biomol. Chem. 7(9), 2009
PMID: 19590774

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