Porous silicon matrix for chemical synthesis and chromatograpy

Abstract This paper reports the fabrication of a porous silicon matrix with two narrow pore size regimes: an ordered array of macropores and a network of mesopores within the walls of each macropore. Both types of pores are well defined in their length and show a narrow pore diameter distribution, but the difference in pore diameter between the two types may be as large as 10³. By free choice of the dimensions for each size regime this material can be tailor‐made according to its specific application; for example as stationary phase in chromatograpy or as immobilisation and reaction site for chemical or biochemical synthesis. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)