The UV filtering potential of drop-casted layers of frustules of three diatom species

Abstract Diatoms are in focus as biological materials for a range of photonic applications. Many of these applications would require embedding a multitude of diatoms in a matrix (e.g. paint, crème or lacquer); however, most studies on the photonic and spectral properties of diatoms frustules (silica...

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Autores principales:	Yanyan Su, Torben A. Lenau, Emil Gundersen, Jacob J. K. Kirkensgaard, Christian Maibohm, Jérôme Pinti, Marianne Ellegaard
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/db13ef9db0fd490a89fcf720f838c5a2
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spelling	oai:doaj.org-article:db13ef9db0fd490a89fcf720f838c5a22021-12-02T11:40:55ZThe UV filtering potential of drop-casted layers of frustules of three diatom species10.1038/s41598-018-19596-42045-2322https://doaj.org/article/db13ef9db0fd490a89fcf720f838c5a22018-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-19596-4https://doaj.org/toc/2045-2322Abstract Diatoms are in focus as biological materials for a range of photonic applications. Many of these applications would require embedding a multitude of diatoms in a matrix (e.g. paint, crème or lacquer); however, most studies on the photonic and spectral properties of diatoms frustules (silica walls) have been carried out on single cells. In this study, for the first time, we test the spectral properties of layers of frustules of three diatom species (Coscinodiscus granii, Thalassiosira punctifera and Thalassiosira pseudonana), with special focus on transmission and reflectance in the UV range. The transmittance efficiency in the UV A and B range was: T. pseudonana (56–59%) >C. granii (53–54%) >T. punctifera (18–21%) for the rinsed frustules. To investigate the underlying cause of these differences, we performed X-ray scattering analysis, measurement of layer thickness and microscopic determination of frustule nanostructures. We further tested dried intact cells in the same experimental setup. Based on these data we discuss the relative importance of crystal structure properties, nanostructure and quantity of material on the spectral properties of diatom layers. Characterization of the UV protection performance of layers of diatom frustules is of central relevance for their potential use as innovative bio-based UV filters.Yanyan SuTorben A. LenauEmil GundersenJacob J. K. KirkensgaardChristian MaibohmJérôme PintiMarianne EllegaardNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yanyan Su Torben A. Lenau Emil Gundersen Jacob J. K. Kirkensgaard Christian Maibohm Jérôme Pinti Marianne Ellegaard The UV filtering potential of drop-casted layers of frustules of three diatom species
description	Abstract Diatoms are in focus as biological materials for a range of photonic applications. Many of these applications would require embedding a multitude of diatoms in a matrix (e.g. paint, crème or lacquer); however, most studies on the photonic and spectral properties of diatoms frustules (silica walls) have been carried out on single cells. In this study, for the first time, we test the spectral properties of layers of frustules of three diatom species (Coscinodiscus granii, Thalassiosira punctifera and Thalassiosira pseudonana), with special focus on transmission and reflectance in the UV range. The transmittance efficiency in the UV A and B range was: T. pseudonana (56–59%) >C. granii (53–54%) >T. punctifera (18–21%) for the rinsed frustules. To investigate the underlying cause of these differences, we performed X-ray scattering analysis, measurement of layer thickness and microscopic determination of frustule nanostructures. We further tested dried intact cells in the same experimental setup. Based on these data we discuss the relative importance of crystal structure properties, nanostructure and quantity of material on the spectral properties of diatom layers. Characterization of the UV protection performance of layers of diatom frustules is of central relevance for their potential use as innovative bio-based UV filters.
format	article
author	Yanyan Su Torben A. Lenau Emil Gundersen Jacob J. K. Kirkensgaard Christian Maibohm Jérôme Pinti Marianne Ellegaard
author_facet	Yanyan Su Torben A. Lenau Emil Gundersen Jacob J. K. Kirkensgaard Christian Maibohm Jérôme Pinti Marianne Ellegaard
author_sort	Yanyan Su
title	The UV filtering potential of drop-casted layers of frustules of three diatom species
title_short	The UV filtering potential of drop-casted layers of frustules of three diatom species
title_full	The UV filtering potential of drop-casted layers of frustules of three diatom species
title_fullStr	The UV filtering potential of drop-casted layers of frustules of three diatom species
title_full_unstemmed	The UV filtering potential of drop-casted layers of frustules of three diatom species
title_sort	uv filtering potential of drop-casted layers of frustules of three diatom species
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/db13ef9db0fd490a89fcf720f838c5a2
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The UV filtering potential of drop-casted layers of frustules of three diatom species

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