Control of Molecular Rotor Rotational Frequencies in Porous Coordination Polymers Using a Solid-Solution Approach

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• 作者：Munehiro Inukai ; Tomohiro Fukushima ; Yuh Hijikata ; Naoki Ogiwara ; Satoshi Horike ; Susumu Kitagawa
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：September 30, 2015
• 年：2015
• 卷：137
• 期：38
• 页码：12183-12186
• 全文大小：309K
• ISSN：1520-5126

文摘

Rational design to control the dynamics of molecular rotors in crystalline solids is of interest because it offers advanced materials with precisely tuned functionality. Herein, we describe the control of the rotational frequency of rotors in flexible porous coordination polymers (PCPs) using a solid-solution approach. Solid-solutions of the flexible PCPs [{Zn(5-nitroisophthalate)_x(5-methoxyisophthalate)_1鈥?i>x(deuterated 4,4鈥?bipyridyl)}(DMF路MeOH)]_n allow continuous modulation of cell volume by changing the solid-solution ratio x. Variation of the isostructures provides continuous changes in the local environment around the molecular rotors (pyridyl rings of the 4,4鈥?bipyridyl group), leading to the control of the rotational frequency without the need to vary the temperature.