Highly crystalline sphere and rod-shaped TiO2 nanoparticles: A facile route to bio-polymer grafting

Frontiers in Laboratory Medicine Pub Date : 2017-12-01 DOI:10.1016/j.flm.2017.12.003

Céline Falentin-Daudré, Jean-Sebastien Baumann, Véronique Migonney, Jolanda Spadavecchia

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引用次数: 10

Abstract

The goal of this report is to provide a versatile one step method based on UV irradiation in order to graft a bioactive polymer bearing sulfonate groups called poly(sodium styrene sulfonate) (polyNaSS) onto titanium nanoparticles (TiO₂ NPs) through covalent bond. The synthetic approach consists in two steps: (1) fabrication of TiO₂ nanocrystals with different shape and size by solvothermal method previous hydrolysis of titanium(IV)isopropoxide (TTIP) in the presence of benzyl alcohol (BzOH) and acetic acid (AcOH) at 180 °C, (2) TiO₂ NPs were immersed in a solution of monomer bearing sulfonate group and were placed under UV irradiation to induce the formation of radical to initiate the polymerization of the monomer. To demonstrate the success of the procedure, modified nano-surfaces were characterized by different techniques including colorimetric method by complexation, ATR–FTIR and SEM (EDS). This approach is promising to develop bio-active polymer–TiO₂ nanoparticles as carriers and further successful application in the field of regenerative-nanomedicine.

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高结晶球形和棒状TiO2纳米粒子:生物聚合物接枝的便捷途径

本报告的目的是提供一种基于紫外线照射的多功能一步法，以便通过共价键将含有磺酸基的生物活性聚合物(聚苯乙烯磺酸钠)(polyNaSS)接枝到钛纳米粒子(TiO2 NPs)上。该合成方法包括两个步骤:(1)在180 °C溶剂热法水解钛(IV)异丙醇(TTIP)，在苯甲醇(BzOH)和乙酸(AcOH)存在下制备不同形状和大小的TiO2纳米晶;(2)将TiO2纳米晶浸入含有磺酸基的单体溶液中，并置于紫外线照射下诱导自由基形成，引发单体聚合。为了证明该方法的成功，通过络合比色法、ATR-FTIR和SEM (EDS)等不同技术对改性的纳米表面进行了表征。该方法有望开发出具有生物活性的聚合物- tio2纳米颗粒作为载体，并进一步成功应用于再生纳米医学领域。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Frontiers in Laboratory Medicine

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