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Issue 22, 2012
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IR and IR + UV spectroscopy of isolated [Al–AcPheOMe]n+ cluster cations (n = 1, 3)

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Abstract

Singly and triply charged cationic clusters of aluminium and the protected amino acid AcPheOMe are investigated in a supersonic beam by using a combination of a thermic and a laser ablation ion source. For the singly charged species UV- and IR photodissociation spectroscopy is applied. In the case of the triply charged clusters a variant of combined IR + UV spectroscopy is used to obtain information in the NH-stretching region. By comparison with DFT calculations structural assignments are suggested and it turns out that both clusters prefer a helical arrangement with aluminium being aggregated to both carbonyl groups. For the triply charged cluster a globular structure is formed in which aluminium is captured both by the carbonyl groups and the phenyl ring.

Graphical abstract: IR and IR + UV spectroscopy of isolated [Al–AcPheOMe]n+ cluster cations (n = 1, 3)

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Publication details

The article was received on 04 Jan 2012, accepted on 27 Mar 2012 and first published on 25 Apr 2012


Article type: Paper
DOI: 10.1039/C2CP00028H
Phys. Chem. Chem. Phys., 2012,14, 8185-8191

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    IR and IR + UV spectroscopy of isolated [Al–AcPheOMe]n+ cluster cations (n = 1, 3)

    P. M. Bialach, T. C. Martin and M. Gerhards, Phys. Chem. Chem. Phys., 2012, 14, 8185
    DOI: 10.1039/C2CP00028H

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