Authors Wysokowski, M. ; Motylenko, M. ; Beyer, J. ; ..., ; Tsurkan, M.
Title Extrem biomimetic approach for developing novel chitin-GeO2 nanocomposites with photoluminescent properties
Date 01.07.2015
Number 48061
Abstract This work presents an extreme biomimetics route for the creation of nanostructured 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 distribution 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 photoluminescence exceeding values previously reported in GeO2-based biomaterials. These data demonstrate the potential of extreme biomimetics for developing new-generation nanostructured materials.
Publisher Nano Research
Citation Nano Research 8 (2015) 2288-2301
Tags extreme biomimetics chitin–geo2 photoluminescence near-edge x-ray absorption fine structure (nexafs) spectroscopy

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