[1,1'-Biphenyl]-4-carboxylic acid, 4',4''',4''''',4'''''''-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis-

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CAS: 609365-68-6
MF: C72H46N4O8
MW: 1095.15764
Synonyms: [1,1'-Biphenyl]-4-carboxylic acid, 4',4''',4''''',4'''''''-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis-

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MaoChun Hong

Fujian Institute of Research on the Structure of Matter
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Feilong Jiang

Chinese Academy of Sciences
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Joseph T. Hupp

Northwestern University
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Pingyun Feng

University of California
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Co-reporter: Qipu Lin; Xianhui Bu; Aiguo Kong; Chengyu Mao; Xiang Zhao; Fei Bu;Pingyun Feng
pp: 2235-2238
Publication Date(Web):February 4, 2015
DOI: 10.1021/jacs.5b00076
Four cubic zirconium-porphyrin frameworks, CPM-99(H2, Zn, Co, Fe), were synthesized by a molecular-configuration-guided strategy. Augmentation of meso-substituted side arms (with double-torsional biphenyl rings) of tetratopic porphyrin linkers leads to a successful implementation of zirconium-carboxylate frameworks with cubic 2.5 nm cage. The hard-templating effect of Zr6-polyoxo-cluster and uniformly embedded (metallo)porphyrin centers endow CPM-99 with highly desirable properties as precursors for oxygen reduction reaction (ORR) catalysts. The pyrolytic products not only retain the microcubic morphology of the parent CPM-99 but also possess porphyrinic active sites, hierarchical porosity, and highly conducting networks. CPM-99Fe-derived material, denoted CPM-99Fe/C, exhibits the best ORR activity, comparable to benchmark 20% Pt/C in alkaline and acidic media, but CPM-99Fe/C is more durable and methanol-tolerant. This work demonstrates a new route for the development of nonprecious metal ORR catalysts from stable metalloporphyrinic MOFs.

Omar K. Farha

Northwestern University
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