1. CO2 regulates molecular rotor dynamics in porous materials
- Author
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Luciano Marchiò, Angiolina Comotti, M Negroni, Piero Sozzani, Tetsuya Miyano, Silvia Bracco, Irene Bassanetti, Norimitsu Tohnai, Bracco, S, Miyano, T, Negroni, M, Bassanetti, I, Marchio, L, Sozzani, P, Tohnai, N, and Comotti, A
- Subjects
Materials science ,molecular crystals, permanent porosity, molecular rotor dynamics, CO2 adsorption, solid state NMR ,Nanotechnology ,Crystal structure ,Molecular rotors ,010402 general chemistry ,CHIM/04 - CHIMICA INDUSTRIALE ,01 natural sciences ,Catalysis ,law.invention ,law ,Materials Chemistry ,Porosity ,010405 organic chemistry ,Rotor (electric) ,Dynamics (mechanics) ,Metals and Alloys ,General Chemistry ,Co2 adsorption ,Triple bond ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,CHIM/02 - CHIMICA FISICA ,Chemical physics ,Ceramics and Composites ,Porous medium - Abstract
A crystalline hydrogen-bonded framework with permanent porosity, built by rod-like struts and engineered to bear ultra-fast molecular rotors between two triple bonds, offers the possibility of controlling the rotational rates upon CO2 adsorption. CO2 enters the pores from the gas phase and reduces the rotational rates from the extremely fast regime of 107 Hz at 216 K to 105 Hz. The CO2–rotor interaction was evident from the 2H NMR response to the dynamics of the rotors in contact with CO2 in the crystal structure.
- Published
- 2017