Issue 15, 2011

Solvent-assisted conformational isomerization and the conformationally-pure REMPI spectrum of 3-aminophenol

Abstract

3-Aminophenol (3AP) has two conformers, cis and trans, depending on the orientation of the OH group relative to the NH2 group. While both conformers are found in the jet-cooled spectra of 3AP, only the trans isomer was found in the REMPI spectrum of the 3AP(NH3)1 cluster. It was suggested that the cis conformer of the cluster isomerizes to the more stable trans conformer in the ground state during supersonic expansion. Solvent-assisted conformational isomerization (SACI) is believed to drive the population into the more stable trans isomer. SACI also occurs for the 3AP monomer, reducing 50% of the cis/trans ratio when the ammonia concentration in the expansion is higher than 0.1%. Depending on the expansion condition, the cis conformer can be completely depleted. When other solvents were introduced in the expansion, SACI occurred with only certain solvents whose binding energy is higher than the isomerization barrier. SACI can be used as a means to prepare the most stable conformer of gas phase biomolecules.

Graphical abstract: Solvent-assisted conformational isomerization and the conformationally-pure REMPI spectrum of 3-aminophenol

Article information

Article type
Paper
Submitted
19 พ.ย. 2553
Accepted
15 ก.พ. 2554
First published
11 มี.ค. 2554

Phys. Chem. Chem. Phys., 2011,13, 7037-7042

Solvent-assisted conformational isomerization and the conformationally-pure REMPI spectrum of 3-aminophenol

W. Y. Sohn, M. Kim, S. Kim, Y. D. Park and H. Kang, Phys. Chem. Chem. Phys., 2011, 13, 7037 DOI: 10.1039/C0CP02592E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements