Engineering Switchable Rotors in Molecular Crystals with Open Porosity

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• 作者：Angiolina Comotti ; Silvia Bracco ; Atsushi Yamamoto ; Mario Beretta ; Tomofumi Hirukawa ; Norimitsu Tohnai ; Mikiji Miyata ; Piero Sozzani
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：January 15, 2014
• 年：2014
• 卷：136
• 期：2
• 页码：618-621
• 全文大小：306K
• ISSN：1520-5126

文摘

The first example of a porous molecular crystal containing rotors is presented. The permanently porous crystal architecture is sustained by rotor-bearing molecular rods which are connected through charge-assisted hydrogen bonds. The rotors, as fast as 10⁸ Hz at 240 K, are exposed to the crystalline channels, which absorb CO₂ and I₂ vapors at low pressure. The rotor dynamics could be switched off and on by I₂ absorption/desorption, showing remarkable change of material dynamics by the interaction with gaseous species and suggesting the use of molecular crystals in sensing and pollutant management.