Hexagonal Prismatic Siloxanes Functionalized with Organosilyl Groups as Building Blocks of Nanoporous Materials

Taiki Hayashi; Miharu Kikuchi; Nanako Murase; Takamichi Matsuno; Natsuhiko Sugimura; Kazuyuki Kuroda; Atsushi Shimojima

doi:10.1002/chem.202304080

Hexagonal Prismatic Siloxanes Functionalized with Organosilyl Groups as Building Blocks of Nanoporous Materials

Chemistry. 2024 Mar 20;30(17):e202304080. doi: 10.1002/chem.202304080. Epub 2024 Feb 1.

Authors

Taiki Hayashi¹, Miharu Kikuchi¹, Nanako Murase¹, Takamichi Matsuno^{1

2

3}, Natsuhiko Sugimura⁴, Kazuyuki Kuroda^{1

2}, Atsushi Shimojima^{1

2

3}

Affiliations

¹ Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.
² Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan.
³ Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.
⁴ Materials Characterization Central Laboratory, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.

PMID: 38200698
DOI: 10.1002/chem.202304080

Abstract

Utilization of well-defined siloxane molecules allows for the construction of functional siloxane-based nanoporous materials based on the molecular design. Herein, a novel class of siloxane-based porous materials is synthesized via cross-linking of dimethylsilyl- and dimethylvinylsilyl-functionalized cage siloxanes with double-6-ring (D6R) geometry. Compared with the conventional double-4-ring cage siloxane, this study highlights the characteristics of D6R siloxanes as building blocks, demonstrating their high surface area and chemical stability. Furthermore, density functional theory calculations show their unique cation encapsulation ability.

Keywords: building blocks; cage siloxanes; hydrosilylation; nanoporous materials; zeolite analogues.

Abstract

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