Science China Chemistry

, Volume 54, Issue 12, pp 1920–1925 | Cite as

The effect of solvent in evaporation-induced self-assembly: A case study of benzene periodic mesoporous organosilica

  • WenDong Wang
  • Daniel Faulkner
  • Jonathon Moir
  • Geoffrey A. Ozin


Volatile organic solvents were considered to have little influence on the synthesis of mesostructured materials through evaporation-induced self-assembly (EISA), because upon evaporation they leave the sol and hence do not interfere with the self-assembly process. We show here that the choice of solvent is crucial in the synthesis of thin films of phenylene-bridged periodic mesoporous organosilica (benzene PMO). Methanol is found to be a better solvent for the synthesis of thin films, whereas ethanol favors the formation of (HO)3Si-C6H4-Si(OH)3 crystals, the identity and structure of which is established by X-ray diffraction. A ternary reactant composition diagram is designed to visualize the relationship among multiple synthesis experiments and to guide the interpretation of experimental results and optimization of the quality of the periodic mesoporous organosilica film. Our study highlights the importance of solvent choice, a factor often neglected in EISA. We expect it to inspire researchers to explore the effect of solvent in designing the synthesis of mesoporous materials.


mesoporous materials periodic mesoporous organosilica evaporation induced self assembly thin films 


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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • WenDong Wang
    • 1
  • Daniel Faulkner
    • 1
    • 2
  • Jonathon Moir
    • 1
  • Geoffrey A. Ozin
    • 1
  1. 1.Materials Chemistry Research Group, Department of ChemistryUniversity of TorontoTorontoCanada
  2. 2.Department of Materials Science & EngineeringUniversity of TorontoTorontoCanada

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