Crown ethers at the aqueous solution–air interface: 1. Assignments and surface spectroscopy
Crown ethers at the aqueous solution–air interface: 1. Assignments and surface spectroscopy
The surface of aqueous solutions of 4-Nitro Benzo-15-Crown-5 (NB15C5) and Benzo-15-Crown-5 (B15C5) has been studied using the surface sensitive technique vibrational sum frequency spectroscopy (VSFS). The NO, CN, COC and CH vibrational modes of these compounds at the air–water interface as well as OH vibrational modes of the surface water hydrating this compound have been targeted in order to obtain molecular information about arrangement and conformation of the adsorbed crown ether molecules at the air–water interface. The CH2 vibrational modes of crown ethers have been identified and found to be split due to interaction with ether oxygen. The spectra provide evidence for the existence of a protonated crown complex moiety at the surface leading to the appearance of strongly ordered water species. The interfacial water species are influenced by the resulting charged interface and by the strong Zundel polarizability due to tunneling of the proton species between equivalent sites within the crown ring
7930-7938
Niga, Petru
33deed1e-b117-4328-9630-77608382c32f
King, Wendy
797f9b12-795a-4782-8b06-6f6b2a5f6cb3
Hedberg, Jonas
f1201558-d5d7-4cd6-8b5d-780233df0520
Johnson, C. Magnus
b2e75e28-0788-41cf-8795-52b75a316849
Frey, Jeremy G.
ba60c559-c4af-44f1-87e6-ce69819bf23f
Rutland, Mark W.
2594c3c7-3043-4fc9-862f-4fd9bd0215b7
2011
Niga, Petru
33deed1e-b117-4328-9630-77608382c32f
King, Wendy
797f9b12-795a-4782-8b06-6f6b2a5f6cb3
Hedberg, Jonas
f1201558-d5d7-4cd6-8b5d-780233df0520
Johnson, C. Magnus
b2e75e28-0788-41cf-8795-52b75a316849
Frey, Jeremy G.
ba60c559-c4af-44f1-87e6-ce69819bf23f
Rutland, Mark W.
2594c3c7-3043-4fc9-862f-4fd9bd0215b7
Niga, Petru, King, Wendy, Hedberg, Jonas, Johnson, C. Magnus, Frey, Jeremy G. and Rutland, Mark W.
(2011)
Crown ethers at the aqueous solution–air interface: 1. Assignments and surface spectroscopy.
Physical Chemistry Chemical Physics, 2011 (13), .
(doi:10.1039/C0CP00604A).
Abstract
The surface of aqueous solutions of 4-Nitro Benzo-15-Crown-5 (NB15C5) and Benzo-15-Crown-5 (B15C5) has been studied using the surface sensitive technique vibrational sum frequency spectroscopy (VSFS). The NO, CN, COC and CH vibrational modes of these compounds at the air–water interface as well as OH vibrational modes of the surface water hydrating this compound have been targeted in order to obtain molecular information about arrangement and conformation of the adsorbed crown ether molecules at the air–water interface. The CH2 vibrational modes of crown ethers have been identified and found to be split due to interaction with ether oxygen. The spectra provide evidence for the existence of a protonated crown complex moiety at the surface leading to the appearance of strongly ordered water species. The interfacial water species are influenced by the resulting charged interface and by the strong Zundel polarizability due to tunneling of the proton species between equivalent sites within the crown ring
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Published date: 2011
Organisations:
Chemistry
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Local EPrints ID: 178997
URI: http://eprints.soton.ac.uk/id/eprint/178997
ISSN: 1463-9076
PURE UUID: 7007477c-4dba-4c41-8b6a-f5de6e513de1
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Date deposited: 04 Apr 2011 07:20
Last modified: 15 Mar 2024 02:34
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Author:
Petru Niga
Author:
Wendy King
Author:
Jonas Hedberg
Author:
C. Magnus Johnson
Author:
Mark W. Rutland
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