BIOACTIVE GLASS SHELL GROWTH OF ASi–Na–Ca–PLAYER ON GOLD NANOPARTICLES FUNCTIONALIZED WITH MERCAPTOPROPYLTRIMETHYLOXYSILANE–SILICATE–TETRAETHYLOTHOSILICATE

Chih-Kuang Wang, Szu-Hsien Chen, Wan-Yun Li, Chern-Hsiung Lai and Wen-Cheng Chen ()
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Chih-Kuang Wang: Faculty of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
Szu-Hsien Chen: Faculty of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
Wan-Yun Li: Faculty of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
Chern-Hsiung Lai: School of Dentistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
Wen-Cheng Chen: School of Dentistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC

Surface Review and Letters (SRL), 2009, vol. 16, issue 01, 37-42

Abstract: Calcium phosphate and silicate-modified gold surfaces have potential applications in orthopedic and dental reconstruction, especially when combined with bone cement or dental resins. The aim of this study was to evaluate the formation of aSi–Na–Ca–Pglass system nanoshell on functionalized gold nanoparticles. Stable gold nanoparticle suspensions were prepared by controlled reduction ofHAuCl4using the sodium citrate method to obtain a nanogold-mercaptopropyltrimethyloxysilane (MPTS)–silicate–tetraethylothosilicate (TEOS)-capped particle solution. The nanoshells were formed when directly reacted with a 10-4M calcium phosphate ion solution. The median nanoparticle diameter was observed to be 15 nm. The MPTS–silicate–TEOS–functionalized nanoshell more effectively formed a glass shell as compared with a nonsilicate nanoshell. The changes in the surface morphology and composition were observed by a scanning transmission electron microscope equipped with energy-dispersive X-ray spectroscopy. As seen using EDS, the nanoshell was in a glass phase withCaO-poor layers.

Keywords: Nanoparticles; bioactive; apatite; silicate; glass (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0218625X09012263

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