Chirality-dependent structuration of protonated or sodiated polyphenylalanines: IRMPD and ion mobility studies. Issue 3 (18th December 2015)

• Record Type: Journal Article
• Authors: Lepere, Valeria; Le Barbu-Debus, Katia; Clavaguéra, Carine; Scuderi, Debora; Piani, Giovanni; Simon, Anne-Laure; Chirot, Fabien; MacAleese, Luke; Dugourd, Philippe; Zehnacker, Anne
• Is Part Of: Physical chemistry chemical physics. Volume 18:Issue 3(2016)
• Page Start: 1807
• Page End: 1817
• Publication Date: 2015-12-18
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c5cp06768e
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : Ion mobility experiments are combined with IRMPD spectroscopy for assessing the role of chirality in the structure of protonated and sodiated di- or tetra-peptides. Abstract : Ion mobility experiments are combined with Infra-Red Multiple Photon Dissociation (IRMPD) spectroscopy and quantum chemical calculations for assessing the role of chirality in the structure of protonated and sodiated di- or tetra-peptides. Sodiated systems show a strong chirality dependence of the competition between Na + ⋯O and Na + ⋯π interactions. Chirality effects are more subtle in protonated systems and manifest themselves by differences in the secondary interactions such hydrogen bonds between neutral groups or those involving the aromatic rings.