Synthesis and Development of Novel Bis-Siloxy Arenes for

for a myriad applications. Prior to this work, only a single siloxane was used for this class of coatings. Significantly more ...
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Synthesis and Development of Novel Bis-Siloxy Arenes for Functionalized Magnetic Nanoparticles David A. Spivak, Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803

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Most Stable Coating on Iron Oxide OR

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Iron Oxide Magnetic Nanoparticle (RO)3Si

Si(OR)3

Organosilane coatings for metal oxides such as silicates or iron oxides are important for a myriad applications. Prior to this work, only a single siloxane was used for this class of coatings. Significantly more stable coatings have been found using bis-siloxy functional coatings. Furthermore, siloxanes can provide up to 3 condensable groups which can bond and crosslink to the desired surfaces. Surprisingly, coatings formed with bissiloxane compounds with 2 condensable groups (compound in green in the figure) gave the most stable coatings under hydrolysis conditions.