title: Modulation by Amino Acids: Toward Superior Control in the Synthesis of Zirconium Metal-Organic Frameworks.
abstract: The synthesis of zirconium metal-organic frameworks (Zr MOFs) modulated by various amino acids, including l-proline, glycine, and l-phenylalanine, is shown to be a straightforward approach toward functional-group incorporation and particle-size control. High yields in Zr-MOF synthesis are achieved by employing 5 equivalents of the modulator at 120 °C. At lower temperatures, the method provides a series of Zr MOFs with increased particle size, including many suitable for single-crystal X-ray diffraction studies. Furthermore, amino acid modulators can be incorporated at defect sites in Zr MOFs with an amino acid/ligand ratio of up to 1:1, depending on the ligand structure and reaction conditions. The MOFs obtained through amino acid modulation exhibit an improved CO2 -capture capacity relative to nonfunctionalized materials.
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Avda. Països Catalans 16, 43007, Tarragona, Spain. avgutov@gmail.com.
authors.forename: Oleksii V
authors.initials: OV
authors.lastname: Gutov
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Avda. Països Catalans 16, 43007, Tarragona, Spain.
authors.forename: Sonia
authors.initials: S
authors.lastname: Molina
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Avda. Països Catalans 16, 43007, Tarragona, Spain.
authors.forename: Eduardo C
authors.initials: EC
authors.lastname: Escudero-Adán
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Avda. Països Catalans 16, 43007, Tarragona, Spain. ashafir@iciq.es.
authors.forename: Alexandr
authors.initials: A
authors.lastname: Shafir
keywords: amino acids; metal-organic frameworks; modulated synthesis; proline; zirconium