Hazra, Arpan ; Bonakala, Satyanarayana ; Bejagam, Karteek K. ; Balasubramanian, Sundaram ; Maji, Tapas Kumar (2016) Host-guest [2+2] cycloaddition reaction: postsynthetic modulation of CO2 selectivity and magnetic properties in a bimodal metal-organic framework Chemistry - A European Journal, 22 (23). pp. 7792-7799. ISSN 0947-6539
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/chem.20...
Related URL: http://dx.doi.org/10.1002/chem.201505131
Abstract
Simultaneous tuning of permanent porosity and modulation of magnetic properties by postsynthetic modification (PSM) with light in a metal–organic framework is unprecedented. With the aim of achieving such a photoresponsive porous magnetic material, a 3D photoresponsive biporous framework, MOF1, which has 2D channels occupied by the guest 1,2-bis(4-pyridyl)ethylene (bpee), H2O, and EtOH molecules, has been synthesized. The guest bpee in 1 is aligned parallel to pillared bpee with a distance of 3.9 Å between the ethylenic groups; this allows photoinduced PSM of the pore surface through a [2+2] cycloaddition reaction to yield MOF2. Such photoinduced PSM of the framework structure introduces enhanced CO2 selectivity over that of N2. The higher selectivity in MOF2 than that of MOF1 is studied through theoretical calculations. Moreover, MOF2 unveils reversible changes in Tc with response to dehydration–rehydration. This result demonstrates that photoinduced PSM is a powerful tool for fabricating novel functional materials.
Item Type: | Article |
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Source: | Copyright of this article belongs to John Wiley and Sons, Inc. |
Keywords: | Cycloaddition; Host–Guest Systems; Magnetic Properties; Metal–Organic Frameworks; Postsynthetic Modification |
ID Code: | 113035 |
Deposited On: | 29 May 2018 06:52 |
Last Modified: | 29 May 2018 06:52 |
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