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  Multiscale analysis of mineralized collagen combining X-ray scattering and fluorescence with Raman spectroscopy under controlled mechanical, thermal, and humidity environments

Masic, A., Schütz, R., Bertinetti, L., Li, C., Siegel, S., Metzger, T. H., et al. (2017). Multiscale analysis of mineralized collagen combining X-ray scattering and fluorescence with Raman spectroscopy under controlled mechanical, thermal, and humidity environments. ACS Biomaterials Science & Engineering, 3(11), 2853-2859. doi:10.1021/acsbiomaterials.6b00676.

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Masic, Admir, Autor
Schütz, Roman1, Autor           
Bertinetti, Luca2, Autor           
Li, Chenghao3, Autor           
Siegel, Stefan3, Autor           
Metzger, Till Hartmut1, Autor           
Wagermaier, Wolfgang3, Autor           
Fratzl, Peter4, Autor           
Affiliations:
1Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863285              
2Luca Bertinetti (Indep. Res.), Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2231637              
3Wolfgang Wagermaier, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863296              
4Peter Fratzl, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863294              

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 Zusammenfassung: Biological materials, such as mineralized collagen, are structured over many length scales. This represents a challenge for quantitative characterization, in particular when complex specimen environments are required. This paper describes an approach based on synchrotron x-ray scattering and Raman spectroscopy to analyze the structure of biological materials from the molecular to the macroscopic range in controlled environments including humidity, temperature and mechanical load. This is achieved by a new set-up, installed at the microfocus beamline μSpot at the BESSY II synchrotron in Berlin, where a perforated mirror is placed into the x-ray beam to focus laser light into the specimen to excite a Raman signal. We show that this allows simultaneous micrometer-scale mapping of chemical groups in the organic matrix together with the size and orientation of mineral nanoparticles in mineralized collagen. The approach is especially suitable to study time-dependent modifications of materials, such as molecular changes during tensile deformation, dehydration or thermal denaturation.

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 Datum: 2016-12-282017
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1021/acsbiomaterials.6b00676
PMID: 0533
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Titel: ACS Biomaterials Science & Engineering
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, DC : American Chemical Society
Seiten: - Band / Heft: 3 (11) Artikelnummer: - Start- / Endseite: 2853 - 2859 Identifikator: ISSN: 2373-9878