Polymer Pores to Order

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Science  12 Feb 1999:
Vol. 283, Issue 5404, pp. 901c
DOI: 10.1126/science.283.5404.901c

Nanometer-scale polymer particles have served as templates for porous inorganic materials. Now Johnson et al. (p. 963) show that silica particles can be fused into an ordered lattice and used as a template for making nanoporous polymers. A range of pore sizes can be tuned continuously (from 15 to 35 nanometers) by using mixtures of polymers—one that maintains the template spacing and one that shrinks after the template is removed. The “shrunken” polymers can then be used as templates to make smaller replicas of the original silica templates.

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