Infrared and Raman spectra of lignin substructures : Dibenzodioxocin
© 2020 The Authors. Journal of Raman Spectroscopy published by John Wiley & Sons Ltd.
| Veröffentlicht in: | Journal of Raman spectroscopy : JRS. - 1999. - 51(2020), 3 vom: 25. März, Seite 422-431 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2020
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| Zugriff auf das übergeordnete Werk: | Journal of Raman spectroscopy : JRS |
| Schlagworte: | Journal Article FT‐IR Raman spectroscopy dehydrogenation dibenzodioxocin lignin polymer |
| Zusammenfassung: | © 2020 The Authors. Journal of Raman Spectroscopy published by John Wiley & Sons Ltd. Vibrational spectroscopy is a very suitable tool for investigating the plant cell wall in situ with almost no sample preparation. The structural information of all different constituents is contained in a single spectrum. Interpretation therefore heavily relies on reference spectra and understanding of the vibrational behavior of the components under study. For the first time, we show infrared (IR) and Raman spectra of dibenzodioxocin (DBDO), an important lignin substructure. A detailed vibrational assignment of the molecule, based on quantum chemical computations, is given in the Supporting Information; the main results are found in the paper. Furthermore, we show IR and Raman spectra of synthetic guaiacyl lignin (dehydrogenation polymer-G-DHP). Raman spectra of DBDO and G-DHP both differ with respect to the excitation wavelength and therefore reveal different features of the substructure/polymer. This study confirms the idea previously put forward that Raman at 532 nm selectively probes end groups of lignin, whereas Raman at 785 nm and IR seem to represent the majority of lignin substructures |
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| Beschreibung: | Date Revised 27.07.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 0377-0486 |
| DOI: | 10.1002/jrs.5808 |