A metal organic framework (MOF) engineered to contain in its scaffold rod-like struts featuring ultrafast molecular rotors showed extremely rapid 180 ° flip reorientation with rotational rates of 1011 Hz at 150 K. Crystal-pore accessibility of the MOF allowed the CO2 molecules to enter the cavities and control the rotor spinning speed down to 105 Hz at 150 K. Rotor dynamics, as modulated by CO2 loading/unloading in the porous crystals, was described by proton T1 and 2H NMR spectroscopy. This strategy enabled the regulation of rotary motion by the diffusion of the gas within the channels and the determination of the energetics of rotary dynamics in the presence of CO2

Bracco, S., Castiglioni, F., Comotti, A., Galli, S., Negroni, M., Maspero, A., et al. (2017). Ultrafast Molecular Rotors and Their CO2 Tuning in MOFs with Rod-Like Ligands. CHEMISTRY-A EUROPEAN JOURNAL, 23(47), 11210-11215 [10.1002/chem.201702930].

Ultrafast Molecular Rotors and Their CO2 Tuning in MOFs with Rod-Like Ligands

Bracco, S
Membro del Collaboration Group
;
Castiglioni, F
Membro del Collaboration Group
;
Comotti, A
;
Negroni, M
Membro del Collaboration Group
;
Sozzani, P
Membro del Collaboration Group
2017

Abstract

A metal organic framework (MOF) engineered to contain in its scaffold rod-like struts featuring ultrafast molecular rotors showed extremely rapid 180 ° flip reorientation with rotational rates of 1011 Hz at 150 K. Crystal-pore accessibility of the MOF allowed the CO2 molecules to enter the cavities and control the rotor spinning speed down to 105 Hz at 150 K. Rotor dynamics, as modulated by CO2 loading/unloading in the porous crystals, was described by proton T1 and 2H NMR spectroscopy. This strategy enabled the regulation of rotary motion by the diffusion of the gas within the channels and the determination of the energetics of rotary dynamics in the presence of CO2
Articolo in rivista - Articolo scientifico
MOFs; dynamics; molecular rotors; porous materials; CO2 adsorption, solid state NMR spectroscopy; supramolecular chemistry;
English
2-ago-2017
2017
23
47
11210
11215
partially_open
Bracco, S., Castiglioni, F., Comotti, A., Galli, S., Negroni, M., Maspero, A., et al. (2017). Ultrafast Molecular Rotors and Their CO2 Tuning in MOFs with Rod-Like Ligands. CHEMISTRY-A EUROPEAN JOURNAL, 23(47), 11210-11215 [10.1002/chem.201702930].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/183757
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