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Updated: Jul 10, 2026

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Formation of a new Ia-3d cubic meso-structured silica via triblock copolymer-assisted synthesis
Katarina Flodström1, Viveka Alfredsson, Niklas Källrot
1Physical Chemistry 1, Lund University, P.O. Box 124, SE- 221 00 LUND, Sweden. katarina.flodstrom@fkem1.lu.se
Abstract:
A new mesoporous silica structure with cubic Iad symmetry has been synthesized. The structure has very large unit cell dimensions, up to 250 A in the as-synthesized form and 222 A after calcination, and the surface area is around 700 m2/g. The syntheses were done according to well-established synthesis conditions with the triblock copolymers Pluronics P103 or P123, except for the addition of NaI to the synthesis mixture. Small-angle X-ray scattering revealed that the sample has Iad symmetry. According to electron micrographs, the structure is similar to that of MCM-48, and we thus propose that the structure lies on the gyroid minimal surface.
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