Organic modification of layered zirconium phosphate/phosphonate for controlled release of therapeutic inorganic ions
| Autor: | Chikara Ohtsuki, Ayae Sugawara-Narutaki, Ryoya Ito, Ryohei Kozaki, Jin Nakamura |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
30 Bio-inspired and biomedical materials
tetrabutylammonium Intercalation (chemistry) Inorganic ions Biomaterials 300 Processing / Synthesis and Recycling chemistry.chemical_compound intercalation General Materials Science Materials of engineering and construction. Mechanics of materials layered zirconium phosphate/phosphonate 211 Scaffold / Tissue engineering / Drug delivery Chemistry therapeutic inorganic ions 200 Applications Controlled release Phosphonate Focus on Trends in Biomaterials in Japan 100 Materials 301 Chemical syntheses / processing Zirconium phosphate TA401-492 107 Glass and ceramic materials TP248.13-248.65 Biotechnology Research Article Nuclear chemistry |
| Zdroj: | Science and Technology of Advanced Materials article-version (VoR) Version of Record Science and Technology of Advanced Materials, Vol 22, Iss 1, Pp 1000-1012 (2021) |
| ISSN: | 1878-5514 1468-6996 |
| DOI: | 10.1080/14686996.2021.1993728 |
| Popis: | The present study aims to develop a layered zirconium phosphate/phosphonate (LZP) powder to control the release of therapeutic inorganic ions. Organically modified LZPs were successfully prepared with various contents of phenyl groups via a reflux method in an aqueous solution containing phosphoric and phenylphosphonic acids. Powder X-ray diffraction analysis and Fourier transform infrared spectroscopy revealed that the crystal structure of the synthesized LZP samples was identical to that of α-zirconium phosphate, even after modification. The amount of incorporated organic molecules increased with increasing molar fractions of phenylphosphonic acid in the starting composition, as determined from the thermal analysis. Cobalt ion (Co2+), a type of therapeutic inorganic ion, was incorporated into the organically modified LZP through treatment with an acetonitrile solution containing tetrabutylammonium ions, followed by treatment with an acetonitrile solution containing CoCl2. The amount of incorporated Co2+ depended on the concentration of the phenyl groups. Furthermore, the highest amount of Co2+ was incorporated in the sample (ZP-Ph-0.5) prepared with equimolar phosphoric/phenylphosphonic acid. The ZP-Ph-0.5 sample additionally showed the ability to incorporate copper or iron ions (Cu2+ or Fe3+). The incorporated ion, either Co2+ or Cu2+, was continuously released from the ZP-Ph-0.5 sample in a saline solution over a period of three weeks, whereas the release of Fe3+ was negligible. The quantity of Co2+ released was higher than that of Cu2+. The controlled release of Co2+ from the ZP-Ph-0.5 sample was also observed in a simulated body fluid that mimicked the ionic concentration of human blood plasma. These results confirm that a specific degree of phenyl modification makes LZP a candidate host material for releasing therapeutic inorganic ions. Graphical abstract |
| Databáze: | OpenAIRE |
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