Vinyl-Functionalized Janus Ring Siloxane: Potential Precursors to Hybrid Functional Materials

• Published in: Materials Vol. 14; no. 8; p. 2014
• Main Authors: Chaiprasert, Thanawat, Liu, Yujia, Takeda, Nobuhiro, Unno, Masafumi
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 16.04.2021; MDPI
• Subjects: By products; Chemical synthesis; Chromatography; Communication; cyclotetrasiloxane; Functional groups; Functional materials; hybrid organic-inorganic; Janus ring; Mass spectrometry; NMR; Nuclear magnetic resonance; Open systems; Piers–Rubinsztajn reaction; Polymerization; Porous materials; Potassium; Precursors; Scientific imaging; Siloxanes; silsesquioxane; Solvents; vinyl monomer; Japan; vinyl monomer; Janus ring; cyclotetrasiloxane; hybrid organic-inorganic; silsesquioxane; Piers–Rubinsztajn reaction
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma14082014

A vinyl-functionalized all- -tetrasiloxycyclotetrasiloxane [ViSi(OSiMe H)O] (Vi = vinyl group) Janus precursor was prepared from potassium cyclotetrasiloxane silanolate. The Janus precursor was selectively modified at its dimethylhydrosilyl groups [-SiMe H] via the Piers-Rubinsztajn reaction to obtain a family of new tetravinyl-substituted Janus rings [ViSi(OR')O] containing various functional groups in moderate yields. Remarkably, the tetravinyl groups on the structure remained intact after modification by the Piers-Rubinsztajn reaction. Since these synthesized compounds possess multiple functional groups (up to eight per molecule), they are potential precursors for advanced hybrid organic-inorganic functional materials.