2025-08-29 東京大学,東京理科大学,高輝度光科学研究センター,北里大学,広島大学,長崎大学
多孔性結晶を用いた界面水の構造解析
＜関連情報＞
- https://www.c.u-tokyo.ac.jp/info/news/topics/20250829180000.html
- https://www.nature.com/articles/s41467-025-62578-0
原子分解能で界面水分子不均一性を解明する低エントロピー超分子結晶 Low-entropy supramolecular crystals elucidating the inhomogeneity of interfacial water molecules at atomic resolution
Shinnosuke Horiuchi,Shota Ogura,Kazuya Otsubo,Yuka Ikemoto,Hisao Kiuchi,Yudai Shinozaki,Hiromi Tsuyuki,Go Watanabe,Osamu Takahashi,Mikihiro Hayashi,Eri Sakuda,Yasuhiro Arikawa,Keisuke Umakoshi & Yoshihisa Harada
Nature Communications Published:29 August 2025
DOI:https://doi.org/10.1038/s41467-025-62578-0
Abstract
Water at interfaces plays crucial roles in various natural phenomena and in the material sciences. Therefore, understanding the structure and hydrogen-bonding network at such interfaces is essential. Recent advances in porous crystalline materials, combined with single-crystal X-ray diffraction techniques, have enabled the visualization of molecular structures on pore surfaces at atomic resolution. Herein, we report the formation of a supramolecular porous crystal composed of a resorcin[4]arene and a rigid cationic coordination complex, stabilized by hydrogen bonds and noncovalent interactions. This specific arrangement creates a porous framework with anisotropic, information-rich surfaces, accommodating water molecules to form multi-layered water channels. The analysis reveals clustering motifs and hydrogen-bonding patterns in the water molecules at interfaces, supported by molecular dynamics simulations and spectroscopy studies. These findings advance our understanding of the structure–property relationship of water at interfaces in low-entropy crystalline materials, offering insights into their behavior on complex surfaces.
