Ordered Bicontinuous Nanoporous and Nanorelief Ceramic Films from Self Assembling Polymer Precursors
Vanessa Z.-H. Chan,
1
James Hoffman,
2
Victor Y. Lee,
3
Hermis Iatrou,
4
Apostolos Avgeropoulos,
4
Nikos Hadjichristidis,
4
Robert D. Miller,
3
Edwin L. Thomas
1*
Three-dimensional ceramic nanostructured films were
produced from silicon-containing triblock copolymer films exhibiting
the double gyroid and inverse double gyroid morphologies (space group Ia3d). A one-step room-temperature oxidation process that
used ozonolysis and ultraviolet irradiation effected both the selective removal of the hydrocarbon block and the conversion of the
silicon-containing block to a silicon oxycarbide ceramic stable to
400°C. Depending on the relative volume fraction of the hydrocarbon
block to the silicon- containing block, either nanoporous or nanorelief
structures were fabricated with calculated interfacial areas of ~40
square meters per gram and pore or strut sizes of ~20 nanometers.
1 Department of Materials Science and
Engineering, Massachusetts Institute of Technology, Cambridge, MA
02139, USA.
2 Mathematical Science Research
Institute, Berkeley, CA, 94720, USA.
3 IBM Almaden
Research Center, San Jose, CA 95120, USA.
4 Department of Chemistry, University of Athens,
Athens, Greece.
*
To whom correspondence should be addressed. E-mail:
ellt{at}mit.edu
