Macroporous thin films for planar chromatography - Code: EP25

M. Tsionsky*, A. Vanger, O. Lev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


A procedure for the preparation of macroporous silica films suitable for planar chromatography is described. The films are produced by a low pH catalyses of alkyltrialkoxysilanes in oversaturated solution of pore forming organic compounds. A segregated three phase system yields thick films (10-60 μm) that have good adhesion to silica glass supports, uniform, mirror like surface and intercalated micron-dimension pores that permit capillarity driven elution of solvents through the film. A phase diagram demonstrating optimal operating conditions for macroporous and microporous film formation is introduced and analyzed.

Original languageAmerican English
Pages (from-to)595-599
Number of pages5
JournalJournal of Sol-Gel Science and Technology
Issue number1-3
StatePublished - Jan 1994


  • chromatography
  • macroporous
  • pores
  • silica films


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