Vibrational and electronic spectra of protonated vanillin: exploring protonation sites and isomerisation - Université de Pau et des Pays de l'Adour Accéder directement au contenu
Article Dans Une Revue Physical Chemistry Chemical Physics Année : 2024

Vibrational and electronic spectra of protonated vanillin: exploring protonation sites and isomerisation

Résumé

Photofragmentation spectra of protonated vanillin produced under electrospray ionisation (ESI) conditions have been recorded in the 3000-3700 cm−1 (vibrational) and 225-460 nm (electronic) ranges, using room temperature IRMPD (infrared multiphoton dissociation) and cryogenic UVPD (ultraviolet photodissociation) spectroscopies, respectively. The cold (∼50 K) electronic UVPD spectrum exhibits very well resolved vibrational structure for the S1 ← S0 and S3 ← S0 transitions, suggesting long excited state dynamics, similar to its simplest analogue, protonated benzaldehyde. The experimental data were combined with theoretical calculations to determine the protonation site and configurational isomer observed in the experiments
Fichier principal
Vignette du fichier
d3cp05573f.pdf (922.48 Ko) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04589698 , version 1 (27-05-2024)

Identifiants

Citer

Alejandro Gutiérrez-Quintanilla, Baptiste Moge, Isabelle Compagnon, Jennifer A Noble. Vibrational and electronic spectra of protonated vanillin: exploring protonation sites and isomerisation. Physical Chemistry Chemical Physics, 2024, 26 (21), pp.15358-15368. ⟨10.1039/d3cp05573f⟩. ⟨hal-04589698⟩
27 Consultations
7 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More