Periodic Mesoporous Dendrisilicas
Kai Landskron and
Geoffrey A. Ozin*
We report the synthesis of a new class of materials called periodic
mesoporous dendrisilicas. They are prepared from dendrimers
with trialkoxysilyl groups at the outmost shell. Dendrimers
of various cores and numbers of shells are used. The dendrisilica
synthesis is based on acid- or base-catalyzed hydrolysis of
the trialkoxysilyl groups and subsequent template-directed condensation
of the dendrimers into an ordered template-dendrisilica nanocomposite.
The template can be removed with organic solvents, producing
a periodic mesoporous dendrisilica whose pore walls consist
of interconnected dendrimer building blocks.
* To whom correspondence should be addressed. E-mail: gozin{at}chem.utoronto.ca
