Details
| Translated title of the contribution | Holzfeuchte als Schlüssel zum Verständnis der Lignocellulosefluoreszenz in Holz |
|---|---|
| Original language | English |
| Pages (from-to) | 4149-4160 |
| Number of pages | 12 |
| Journal | Cellulose |
| Volume | 31 |
| Issue number | 7 |
| Early online date | 10 Apr 2024 |
| Publication status | Published - May 2024 |
Abstract
Keywords
- Moisture, Lignocellulose, Fluroescence quenching, FRET, EEM, Clustering-triggered emission, Clustering-Triggered emission, Fluorescence quenching
ASJC Scopus subject areas
- Materials Science(all)
- Polymers and Plastics
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In: Cellulose, Vol. 31, No. 7, 05.2024, p. 4149-4160.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Moisture as key for understanding the fluorescence of lignocellulose in wood
AU - Peters, Frank Bernhard
AU - Rapp, Andreas Otto
N1 - Funding Open Access funding enabled and organized by Projekt DEAL. The authors declare that no funds, grants, or other support were received during the preparation of this manuscript.
PY - 2024/5
Y1 - 2024/5
N2 - The fluorescence behaviour of lignocellulose in Pinus sylvestris L. was studied under the influence of moisture. Fluorescence excitation-emission-matrices (EEMs) of the solid wood surfaces were recorded. Two emission peaks were identified, one attributed to lignocellulose, the other to pinosylvins. The two peaks were successfully modelled with PARAFAC2-deconvolution. Lignocellulose showed excitation-dependent emission. Its emission was quenched and blue-shifted by moisture, while pinosylvin showed none of these properties. The quenching efficiency was proportional to the moisture content (linear Stern–Volmer plot), a phenomenon first demonstrated for wood in this study. Potential mechanisms for the moisture quenching are discussed, with clustering-triggered emission best explaining most of the observed peculiarities. The strong influence of moisture on the fluorescence of pine wood suggests that carbohydrates, or interactions between carbohydrates and lignin, play an important role in lignocellulose fluorescence.
AB - The fluorescence behaviour of lignocellulose in Pinus sylvestris L. was studied under the influence of moisture. Fluorescence excitation-emission-matrices (EEMs) of the solid wood surfaces were recorded. Two emission peaks were identified, one attributed to lignocellulose, the other to pinosylvins. The two peaks were successfully modelled with PARAFAC2-deconvolution. Lignocellulose showed excitation-dependent emission. Its emission was quenched and blue-shifted by moisture, while pinosylvin showed none of these properties. The quenching efficiency was proportional to the moisture content (linear Stern–Volmer plot), a phenomenon first demonstrated for wood in this study. Potential mechanisms for the moisture quenching are discussed, with clustering-triggered emission best explaining most of the observed peculiarities. The strong influence of moisture on the fluorescence of pine wood suggests that carbohydrates, or interactions between carbohydrates and lignin, play an important role in lignocellulose fluorescence.
KW - Feuchte
KW - Lignocellulose
KW - Fluoreszenzlöschung
KW - FRET
KW - EEM
KW - Clusterin-triggered emission
KW - Moisture
KW - Lignocellulose
KW - Fluroescence quenching
KW - FRET
KW - EEM
KW - Clustering-triggered emission
KW - Clustering-Triggered emission
KW - Fluorescence quenching
UR - http://www.scopus.com/inward/record.url?scp=85189916114&partnerID=8YFLogxK
U2 - 10.1007/s10570-024-05898-6
DO - 10.1007/s10570-024-05898-6
M3 - Article
VL - 31
SP - 4149
EP - 4160
JO - Cellulose
JF - Cellulose
SN - 0969-0239
IS - 7
ER -