Volume 57, Issue 44 pp. 14585-14588
Communication

Carving Out Pores in Redox-Active One-Dimensional Coordination Polymers

Naomi E. Clayman

Naomi E. Clayman

Department of Chemistry, Stanford University, Stanford, CA, 94305 USA

These authors contributed equally to this work.

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Mary Anne Manumpil

Mary Anne Manumpil

Department of Chemistry, Stanford University, Stanford, CA, 94305 USA

These authors contributed equally to this work.

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Daiki Umeyama

Daiki Umeyama

Department of Chemistry, Stanford University, Stanford, CA, 94305 USA

Present Address: International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 Japan

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Andrey E. Rudenko

Andrey E. Rudenko

Department of Chemistry, Stanford University, Stanford, CA, 94305 USA

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Hemamala I. Karunadasa

Corresponding Author

Hemamala I. Karunadasa

Department of Chemistry, Stanford University, Stanford, CA, 94305 USA

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Robert M. Waymouth

Corresponding Author

Robert M. Waymouth

Department of Chemistry, Stanford University, Stanford, CA, 94305 USA

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First published: 19 September 2018
Citations: 9

Graphical Abstract

Templating pores in polymers: Reduction of non-porous cationic insulating coordination polymers (see picture, left) yields porous neutral conductive polymers (right). The porosity varies with the size of the anion that departs the parent polymer.

Abstract

Reduction of the insulating one-dimensional coordination polymer [Cu(abpy)PF6]n, 1 a(PF6), (abpy=2,2′-azobispyridine) yields the conductive, porous polymer [Cu(abpy)]n, 2 a. Pressed pellets of neutral 2 a exhibit a conductivity of 0.093 S cm−1 at room temperature and a Brunauer–Emmett–Teller (BET) surface area of 56 m2 g−1. Fine powders of 2 a have a BET surface area of 90 m2 g−1. Cyclic voltammetry shows that the reduction of 1 a(PF6) to 2 a is quasi-reversible, indicative of facile charge transfer through the bulk material. The BET surface area of the reduced polymer 2 can be controlled by changing the size of the counteranion X in the cationic [Cu(abpy)X]n. Reduction of [Cu(abpy)X]n with X=Br (2 b) or BArF (2 c; BArF=tetrakis(3,5-bis(trifluoromethyl)phenyl)), affords [Cu(abpy)]n polymers with surface areas of 60 and 200 m2 g−1, respectively.

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