Phase Transfer of Rhodium(II)-Based Metal-Organic Polyhedra Bearing Coordinatively Bound Cargo Enables Molecular Separation
Grancha, Thais (Institut Català de Nanociència i Nanotecnologia)
Carné-Sánchez, Arnau (Institut Català de Nanociència i Nanotecnologia)
Hernández López, Laura (Institut Català de Nanociència i Nanotecnologia)
Albalad Alcala, Jorge (Institut Català de Nanociència i Nanotecnologia)
Imaz, Inhar (Institut Català de Nanociència i Nanotecnologia)
Juanhuix, Judith (Laboratori de Llum del Sincrotró ALBA)
Maspoch Comamala, Daniel (Institut Català de Nanociència i Nanotecnologia)

Date:	2019
Abstract:	The transfer of nanoparticles between immiscible phases can be driven by externally triggered changes in their surface composition. Interestingly, phase transfers can enhance the processing of nanoparticles and enable their use as vehicles for transporting molecular cargo. Herein we report extension of such phase transfers to encompass porous metal-organic polyhedra (MOPs). We report that a hydroxyl-functionalized, cuboctahedral Rh(II)-based MOP can be transferred between immiscible phases by pH changes or by cation-exchange reactions. We demonstrate use of this MOP to transport coordinatively bound cargo between immiscible layers, including into solvents in which the cargo is insoluble. As proof-of-concept that our phase-transfer approach could be used in chemical separation, we employed Rh(II)-based MOPs to separate a challenging mixture of structurally similar cyclic aliphatic (tetrahydrothiophene) and aromatic (thiophene) compounds. We anticipate that transport of coordinatively bound molecules will open new avenues for molecular separation based on the relative coordination affinity that the molecules have for the Rh(II) sites of MOP.
Grants:	Agencia Estatal de Investigación RTI2018-095622-B-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-238 European Commission 615954 Ministerio de Economía y Competitividad IJCI-2016-29802 Ministerio de Economía y Competitividad FJCI2017-31598
Rights:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Bound molecules ; Cation exchange reactions ; Chemical separation ; Immiscible phasis ; Metal-organic polyhedron ; Molecular separation ; Proof of concept ; Tetrahydrothiophene
Published in:	Journal of the American Chemical Society, Vol. 141, Issue 45 (November 2019) , p. 18349-18355, ISSN 1520-5126

DOI: 10.1021/jacs.9b10403

Postprint 11 p, 630.1 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > The ALBA Synchrotron
Articles > Research articles
Articles > Published articles