Masaki Donoshita

Design of Crystal Structures Using Hydrogen Bonds on Molecular-Layered Cocrystals and Proton-Electron Mixed Conductor (eBook, PDF)

• Format: PDF

Produktbeschreibung

This thesis addresses the design of crystal structures using hydrogen bonds. In particular, it focuses on the design of functionalities and the control over the packing of molecular assemblies, based on molecular designs.

Firstly, the synthesis and evaluation of a proton-electron mixed conducting charge transfer salt is reported. Focusing on the difference in the strength of hydrogen bonds and weaker intermolecular interactions, a system was rationally designed and constructed where electron-conducting molecular wires were encapsulated within a proton-conducting matrix. Next, the investigation of structural phase transitions in a cocrystal consisting of hydrogen-bonded two-dimensional molecular assemblies is reported. Drastic rearrangements of hydrogen-bonded molecular assemblies in the cocrystal led to single-crystal-to-single-crystal phase transitions, resulting in anisotropic changes in the crystal shape. Furthermore, chemical modification ofa component molecule in the cocrystal is reported. The modification afforded control over the stacking patterns of the two-dimensional molecular assemblies, i.e., sheets, and the mechanism was discussed considering the intersheet intermolecular interactions and molecular motion.

It is suggested that hydrogen bonds are beneficial to construct molecular assemblies in molecular crystals because of their strength and well-defined directionality, and the consideration of coexisting weaker intermolecular interactions can lead to the design of whole crystal structures and, hence, functionalities. This thesis benefits students and researchers working on solid-state chemistry by presenting various methods for characterizing and evaluating the properties of molecular solids.

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Produktdetails

• Verlag: Springer Nature Singapore
• Seitenzahl: 79
• Erscheinungstermin: 3. Januar 2024
• Englisch
• ISBN-13: 9789819970629
• Artikelnr.: 69744912

Autorenporträt

Masaki Donoshita received his B.Sc., M.Sc., and Ph.D. in chemistry from Kyoto University under the supervision of Professor Hiroshi Kitagawa in 2017, 2019, and 2022, respectively. He is currently an assistant professor at Institute for Materials Chemistry and Engineering, Kyushu University.

Inhaltsangabe

General Introduction.- Rational Construction of Molecular Electron-conducting Nanowires Encapsulated in Proton-conducting Matrix in a Charge Transfer Salt.- Drastic Rearrangement of Self-assembled Hydrogen-bonded Tapes in a Molecular Crystal.- Various Stacking Patterns of Two-Dimensional Molecular Assemblies in Hydrogen-Bonded Cocrystals: Insight into Competitive Intermolecular Interactions and Control of Stacking Patterns.- General Conclusion.

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