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Hierarchical Porous Polymer Scaffolds from Block Copolymers

2013; American Association for the Advancement of Science; Volume: 341; Issue: 6145 Linguagem: Inglês

10.1126/science.1238159

1095-9203

Hiroaki Sai, Kwan Wee Tan, Kahyun Hur, Emily Asenath‐Smith, Robert Hovden, Yi Jiang, Mark L. Riccio, David A. Muller, Veit Elser, Lara A. Estroff, Sol M. Grüner, Ulrich Wiesner,

Covalent Organic Framework Applications

A Complicated Scaffold, Simply Materials with tailored pore structures can be useful as catalysis supports and for lightweight materials. When preparing medical scaffolds, restrictive preparation conditions have to be met, which can prohibit multistep preparation procedures. Sai et al. (p. 530 ) describe a method for making porous polymers containing both relatively large (several microns) interconnecting pores and a second population of ∼ tens of nanometer pores. The process exploits spinodal decomposition of a block copolymer blended with small-molecule additives and requires a simple washing step with water, methanol, or ethanol.