Supporting Information A New Approach to Non-coordinating Anions: Lewis Acid Enhancement of Porphyrin Metal Centers in a Zwitterionic Metal-Organic Framework Jacob A. Johnson, † Brenna M. Petersen, † Attila Kormos ‡ , Elena Echeverría, # Yu-Sheng Chen, § and Jian Zhang* ,† † Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, 68588-0304, United States ‡ Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, H-1117, Budapest, Hungary § ChemMatCARS, Center for Advanced Radiation Sources, The University of Chicago, 9700 S. Cass Avenue, Argonne, Illinois, 60439, United States # Department of Physics and Astronomy, Theodore Jorgensen Hall, 855 N 16th St., University of Nebraska, Lincoln, Nebraska 68588-0299, United States E-mail: jzhang3@unl.edu