A novel analytical approach based on fluorescence labeling was developed in the effort to increase the understanding of phenolic group distribution in technical lignins. Selective derivatization with a fluorophore (dansyl chloride) of lignin phenolic functionalities was quantitatively achieved under mild reaction conditions. Reference acetylated lignin and labeled lignin were analyzed by gel permeation chromatography (GPC) coupled to a UV–vis detector (set at 280 nm) and a fluorescence detector (λ excitation: 390 nm, λ emission: 550 nm) to discern the dansyl-linked phenol response from the lignin aromatic skeleton input. After data elaboration, valuable information about the phenolic group distribution as a function of molecular weight for different technical lignins was gathered. This novel analytical approach is applied to model lignin polymer thermal protection properties, a useful parameter in lignin valorization strategies.

Salanti, A., Orlandi, M., Zoia, L. (2020). Fluorescence Labeling of Technical Lignin for the Study of Phenolic Group Distribution as a Function of the Molecular Weight. ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 8(22), 8279-8287 [10.1021/acssuschemeng.0c01571].

Fluorescence Labeling of Technical Lignin for the Study of Phenolic Group Distribution as a Function of the Molecular Weight

Salanti, Anika;Orlandi, Marco
;
Zoia, Luca
2020

Abstract

A novel analytical approach based on fluorescence labeling was developed in the effort to increase the understanding of phenolic group distribution in technical lignins. Selective derivatization with a fluorophore (dansyl chloride) of lignin phenolic functionalities was quantitatively achieved under mild reaction conditions. Reference acetylated lignin and labeled lignin were analyzed by gel permeation chromatography (GPC) coupled to a UV–vis detector (set at 280 nm) and a fluorescence detector (λ excitation: 390 nm, λ emission: 550 nm) to discern the dansyl-linked phenol response from the lignin aromatic skeleton input. After data elaboration, valuable information about the phenolic group distribution as a function of molecular weight for different technical lignins was gathered. This novel analytical approach is applied to model lignin polymer thermal protection properties, a useful parameter in lignin valorization strategies.
Articolo in rivista - Articolo scientifico
Technical lignin Phenol Dansyl Fluorescence Molecular weight
English
11-mag-2020
2020
8
22
8279
8287
none
Salanti, A., Orlandi, M., Zoia, L. (2020). Fluorescence Labeling of Technical Lignin for the Study of Phenolic Group Distribution as a Function of the Molecular Weight. ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 8(22), 8279-8287 [10.1021/acssuschemeng.0c01571].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/277282
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