dc.identifier.uri |
http://dx.doi.org/10.15488/11716 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/11809 |
|
dc.contributor.author |
Peters, Frank B.
|
eng |
dc.contributor.author |
Rapp, Andreas O.
|
eng |
dc.date.accessioned |
2022-01-24T14:52:58Z |
|
dc.date.available |
2022-11-16T23:05:03Z |
|
dc.date.issued |
2021-11-16 |
|
dc.identifier.citation |
Peters, F.B.; Rapp, A.O.: Wavelength-dependent photodegradation of wood and its
effects on fluorescence. In: Holzforschung 76 (2021), Nr. 1, S. 60-67. DOI: https://www.doi.org/10.1515/hf-2021-0102 |
eng |
dc.description.abstract |
Apart from some strongly fluorescent wood species, the general fluorescence of wood has long been
ignored. Recent studies suggest that each species has a distinct fluorescence, originating from both
basic components and characteristic extractives. However, wood colour and fluorescence rapidly
change upon exposure to sunlight. In this study, 288 samples of Acer pseudoplatanus, Quercus robur,
Picea abies and Juglans nigra were irradiated with different bands of ultraviolet (UV) and visible
(VIS) light. Photosensitivity was examined in regards of colour, infrared absorbance (FTIR), and
fluorescence imaging. UV light caused strong yellowing in all examined species, mostly correlating
with lignin degradation, carbonyl formation and the appearance of a broad banded fluorescence
emission. VIS light above 420 nm, however, caused different, partly contradicting effects in colour
and fluorescence, and did not affect lignin. Juglans nigra proved to be most sensitive towards VIS-
induced yellowing and bleaching. The main new finding of this study is that the native long wave
fluorescence of wood was strongly decreased by VIS-irradiation above 510 nm wavelength in all
samples. This effect was not species-specific, probably originating from a cross-species wood
component. The results have potential impacts on non-destructive image-based evaluation methods
and wood identification. |
eng |
dc.language.iso |
eng |
eng |
dc.publisher |
Berlin : De Gruyter |
|
dc.relation.ispartofseries |
Holzforschung 76 (2021), Nr. 1 |
eng |
dc.rights |
Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
eng |
dc.subject |
discolouration |
eng |
dc.subject |
fluorescence imaging |
eng |
dc.subject |
FTIR |
eng |
dc.subject |
longwave fluorescence decrease |
eng |
dc.subject |
photodegradation |
eng |
dc.subject.ddc |
670 | Industrielle und handwerkliche Fertigung
|
eng |
dc.title |
Wavelength-dependent photodegradation of wood and its
effects on fluorescence |
eng |
dc.type |
Article |
eng |
dc.type |
Text |
eng |
dc.relation.essn |
1437-434X |
|
dc.relation.issn |
0018-3830 |
|
dc.relation.doi |
10.1515/hf-2021-0102 |
|
dc.relation.url |
https://www.degruyter.com/document/doi/10.1515/hf-2021-0102/html |
|
dc.bibliographicCitation.firstPage |
60 |
|
dc.bibliographicCitation.lastPage |
67 |
|
dc.description.version |
acceptedVersion |
eng |
tib.accessRights |
frei zug�nglich |
|