ITODYS, Université Paris Diderot-Paris 7 (UMR CNRS 7086), 15 rue Jean de Baïf, 75013 Paris, France.
J Am Chem Soc. 2011 Feb 16;133(6):1646-9. doi: 10.1021/ja108928b. Epub 2011 Jan 19.
A novel and facile methodology for the in situ surface functionalization of Fe(3)O(4) nanoparticles is proposed, based on the use of aryl diazonium salts chemistry. The grafting reaction involves the formation of diazoates in a basic medium. These species are unstable and dediazonize along a homolytic pathway to give aryl radicals which further react with the Fe(3)O(4) NPs during their formation and stop their growth. Advantages of the present approach rely not only on the simplicity, rapidity, and efficiency of the procedure but also on the formation of strong Fe(3)O(4)-aryl surface bonds, highly suitable for further applications.
提出了一种新颖且简便的方法，用于通过芳基重氮盐化学原位表面功能化 Fe(3)O(4) 纳米粒子。接枝反应涉及在碱性介质中形成重氮酸盐。这些物质不稳定，沿均裂途径分解为重氮盐，然后芳基自由基与 Fe(3)O(4) NPs 在形成过程中进一步反应，并阻止其生长。本方法的优点不仅在于该过程的简单、快速和高效，而且还在于形成强的 Fe(3)O(4-芳基表面键，非常适合进一步的应用。
