Janus‐Cube Octasilsesquioxane: Facile Synthesis and Structure Elucidation. (25th May 2016)

• Record Type: Journal Article
• Authors: Oguri, Naoki; Egawa, Yasunobu; Takeda, Nobuhiro; Unno, Masafumi
• Is Part Of: Angewandte Chemie. Volume 128:Number 32(2016)
• Page Start: 9482
• Page End: 9485
• Publication Date: 2016-05-25
• Subjects: Janus-Partikel -- Materialwissenschaften -- Siloxane -- Silsesquioxane; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201602413
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: A perfect "Janus‐cube" octasilsesquioxane, a nanometer‐scale Janus particle with two different types of substituents, was synthesized through the cross‐coupling of a "half‐cube" cyclic sodium siloxanolate with another half‐cube cyclic fluorosiloxane. The structure was confirmed by X‐ray crystallography to be a Janus cube. The overall synthesis is simple and does not require drastic separation methods compared with previous methods. The synthesis of the Janus cube demonstrates a novel siloxane bond‐forming reaction involving the coupling a silanol salt and fluorosilane. The reaction is mild, does not result in acid generation, and could be applied to the construction of other novel siloxane compounds.