Extreme biomimetic approach for developing novel chitin-GeO2 nanocomposites with photoluminescent properties  

作　　者：Marcin Wysokowski Mykhailo Motylenko Jan Beyer Anna Makarova Hartmut Stocker Juliane Walter Roberta Galli Sabine Kaiser Denis Vyalikh Vasilii V. Bazhenov laroslav Petrenko Allison L Stelling Serguei L. Molodtsovs Dawid Stawski Krzysztof J.Kurzydfowski Enrico Langer Mikhail V Tsurkan Teofil Jesionowski Johannes Heitmann Dirk C. Meyer Hermann Ehrlich 

机构地区：[1]Institute of Chemical Technology and Engineering, Poznan University of Technology, 60965 Poznan, Poland [2]Institute of Materials Science, TU Bergakademie Freiberg, 09599 Freiberg, Germany [3]Institute of Applied Physics, TU Bergakademie Freiberg, 09599 Freiberg, Germany [4]Institute of Solid State Physics, Dresden University of Technology, 01069 Dresden, Germany [5]Institute of Experimental Physics, TU Bergakademie Freiberg, 09599 Freiberg, Germany [6]Faculty of Medicine Carl Gustav Carus, Department of Anaesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, TU Dresden, 01069 Dresden, Germany [7]epartment of Physics, St. Petersburg State University, 198504 St. Petersburg, Russia [8]Department of Mechanical Engineering and Materials Science, Duke University, 27708 Durham, NC, USA [9]European X-Ray Free-Electron Laser Facility (XFEL) GmbH, 22761 Hamburg, Germany [10]ITMO University, 197101 St. Petersburg, Russia [11]Department of Commodity and Material Sciences and Textile Metrology, Technical University of Lodz, 90924 LSdz, Poland [12]Materials Design Group, Faculty of Materials Science and Engineering, Warsaw University of Technology, PL-02507 Warsaw, Poland [13]Institute of Semiconductors and Microsystems, TU Dresden, 01062 Dresden, Germany [14]Leibniz Institute of Polymer Research, Max Bergmann Centre for Biomaterials, 01062 Dresden, Germany

出　　处：《Nano Research》2015年第7期2288-2301,共14页纳米研究（英文版）

摘　　要：This work presents an extreme biomimetics route for the creation of nano- structured biocomposites utilizing a chitinous template of poriferan origin. The specific thermal stability of the nanostructured chitinous template allowed for the formation under hydrothermal conditions of a novel germanium oxide- chitin composite with a defined nanoscale structure. Using a variety of analytical techniques （FTIR, Raman, energy dispersive X-ray （EDX）, near-edge X-ray absorption fine structure （NEXAFS）, and photoluminescence （PL） spectroscopy, EDS-mapping, selected area for the electron diffraction pattern （SAEDP）, and transmission electron microscopy （TEM））, we showed that this bioorganic scaffold induces the growth of GeO2 nanocrystals with a narrow （150-300 nm） size distri- bution and predominantly hexagonal phase, demonstrating the chitin template＇s control over the crystal morphology. The formed GeO2-chitin composite showed several specific physical properties, such as a striking enhancement in photo- luminescence exceeding values previously reported in GeOR-based biomaterials. These data demonstrate the potential of extreme biomimetics for developing new-generation nanostructured materials.

关 键 词：EXTREME biomimetics  chitin-GeO2 photoluminescence  near-edge X-ray absorption fine structure (NEXAFS) spectroscopy 

分 类 号：O[理学]