Segmehl Jana S, Lauria Alessandro, Keplinger Tobias, Berg John K, Burgert Ingo
Wood Materials Science, Institute for Building Materials, Department of Civil, Environmental and Geomatic Engineering, ETH Zürich, Zurich, Switzerland.
Bio-inspired Wood Materials, Applied Wood Materials, EMPA, Dübendorf, Switzerland.
Front Chem. 2018 Mar 23;6:28. doi: 10.3389/fchem.2018.00028. eCollection 2018.
In this work, ultra-small europium-doped HfO nanoparticles were infiltrated into native wood and used as trackers for studying penetrability and diffusion pathways in the hierarchical wood structure. The high electron density, laser induced luminescence, and crystallinity of these particles allowed for a complementary detection of the particles in the cellular tissue. Confocal Raman microscopy and high-resolution synchrotron scanning wide-angle X-ray scattering (WAXS) measurements were used to detect the infiltrated particles in the native wood cell walls. This approach allows for simultaneously obtaining chemical information of the probed biological tissue and the spatial distribution of the integrated particles. The in-depth information about particle distribution in the complex wood structure can be used for revealing transport pathways in plant tissues, but also for gaining better understanding of modification treatments of plant scaffolds aiming at novel functionalized materials.
在这项工作中，将超小铕掺杂的HfO纳米颗粒渗入天然木材中，并用作追踪剂，以研究其在木材分级结构中的渗透性和扩散途径。这些颗粒的高电子密度、激光诱导发光和结晶度使得能够在细胞组织中对颗粒进行互补检测。利用共焦拉曼显微镜和高分辨率同步加速器扫描广角X射线散射（WAXS）测量来检测天然木材细胞壁中渗入的颗粒。这种方法能够同时获取被探测生物组织的化学信息以及整合颗粒的空间分布。关于复杂木材结构中颗粒分布的深入信息不仅可用于揭示植物组织中的运输途径，还有助于更好地理解旨在制备新型功能化材料的植物支架改性处理。
