Advanced Materials

A 2D-Rectangular p2gg Silica Mesoporous Crystal with Elliptical Mesopores: An Intermediate Phase of Chiral and Lamellar Mesostructures


  • This work was supported by the National Natural Science Foundation of China (Grant Nos. 20425102 and 20521140450), the China Ministry of Education, and Shanghai Science Foundation (05XD14010). Financial support from both JST and VR (Y.S. and O.T.) is also acknowledged. Authors acknowledge Sam Stevens, University of Manchester, for critical reading. Supporting Information is available online from Wiley InterScience or from the author.


By adjusting the basicity of the reaction mixture in the cationic surfactant templating route, a systematic change from 2D-hexagonal chiral to 2D-rectangular p2gg to a lamellar silica mesostructure is precisely controlled. Detailed characterization shows that the novel 2D-rectangular p2gg silica mesoporous crystal exhibits elliptical mesopores peculiarly stacked with varying anisotropy on a 2D-hexagonal lattice, as shown in the figure.

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