Intergrowth and Interfacial Structure of Biomimetic Fluorapatite–Gelatin Nanocomposite: A Solid-State NMR Study

详细信息    查看全文

• 作者：Anastasia Vyalikh ; Paul Simon ; Elena Rosseeva ; Jana Buder ; Rüdiger Kniep ; Ulrich Scheler
• 刊名：Journal of Physical Chemistry B
• 出版年：2014
• 出版时间：January 23, 2014
• 年：2014
• 卷：118
• 期：3
• 页码：724-730
• 全文大小：299K
• ISSN：1520-5207

文摘

The model system fluorapatite鈥揼elatin allows mimicking the formation conditions on a lower level of complexity compared to natural dental and bone tissues. Here, we report on solid-state NMR investigations to examine the structure of fluorapatite鈥揼elatin nanocomposites on a molecular level with particular focus on organic鈥搃norganic interactions. Using ³¹P, ¹⁹F, and ¹H MAS NMR and heteronuclear correlations, we found the nanocomposite to consist of crystalline apatite-like regions (fluorapatite and hydroxyfluorapatite) in close contact with a more dissolved (amorphous) layer containing first motifs of the apatite crystal structure as well as the organic component. A scheme of the intergrowth region in the fluorapatite鈥揼elatin nanocomposite, where mineral domains interact with organic matrix, is presented.