Design of Crystal Structures Using Hydrogen Bonds on Molecular-Layered Cocrystals and Proton-Electron Mixed Conductor
Donoshita, Masaki
- 出版商: Springer
- 出版日期: 2024-01-04
- 售價: $7,040
- 貴賓價: 9.5 折 $6,688
- 語言: 英文
- 頁數: 79
- 裝訂: Hardcover - also called cloth, retail trade, or trade
- ISBN: 981997061X
- ISBN-13: 9789819970612
海外代購書籍(需單獨結帳)
相關主題
商品描述
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 of a 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.
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 of a 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.
商品描述(中文翻譯)
本論文探討使用氫鍵設計晶體結構的問題。特別是,它著重於基於分子設計的功能性和分子組裝的控制。
首先,報告了一種質子-電子混合導電電荷轉移鹽的合成和評估。著重於氫鍵的強度差異和較弱的分子間作用力,設計並構建了一個系統,其中電子導電的分子線被封裝在質子導電的基質中。接下來,報告了由氫鍵結合的二維分子組裝組成的共晶體的結構相變。共晶體中氫鍵結合的分子組裝的劇烈重排導致單晶-單晶相變,從而導致晶體形狀的異向性變化。此外,報告了共晶體中組分分子的化學修飾。該修飾使得對二維分子組裝(即片)的堆疊模式具有控制能力,並且通過考慮片間分子間作用力和分子運動來討論了機制。
建議使用氫鍵有助於在分子晶體中構建分子組裝,因為它們具有強度和明確的方向性,並且考慮到共存的較弱分子間作用力可以導致整個晶體結構和功能的設計。本論文通過介紹各種表徵和評估分子固體性質的方法,對於從事固態化學研究的學生和研究人員具有益處。
作者簡介
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.
作者簡介(中文翻譯)
Masaki Donoshita於2017年、2019年和2022年分別在京都大學師從北川浩教授獲得化學學士、碩士和博士學位。他目前是九州大學材料化學與工程研究所的助理教授。