DOI: 10.1126/science.283.5404.963. Ordered Mesoporous Polymers of Tunable Pore Size from Colloidal Silica Templates

Ordered Mesoporous Polymers of Tunable Pore Size from Colloidal Silica Templates

10.1126/science.283.5404.963

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Ordered mesoporous polymers have been prepared by replication of colloidal crystals made from silica spheres 35 nanometers in diameter. The pores in the colloidal crystals were filled with divinylbenzene (DVB), ethyleneglycol dimethacrylate (EDMA), or a mixture of the two. Polymerization and subsequent dissolution of the silica template leaves a polycrystalline network of interconnected pores. When mixtures of DVB and EDMA are used, the pore size of the polymer replicas can be varied continuously between 35 and 15 nanometers because the polymer shrinks when the silica template is removed.

Bibliography

Johnson, S. A., Ollivier, P. J., & Mallouk, T. E. (1999). Ordered Mesoporous Polymers of Tunable Pore Size from Colloidal Silica Templates. Science, 283(5404), 963â965.

Authors 3

Stacy A. Johnson (first)
Patricia J. Ollivier (additional)
Thomas E. Mallouk (additional)

References 40 Referenced 555

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Kyotani T., Sonobe N., Tomita A., Nature 331, 331 (1988); (10.1038/331331a0) / Nature by Kyotani T. (1988)
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; N. Sonobe T. Kyotani Y. Hishiyama M. Shiraishi A. Tomita J. Phys. Chem. 92 2 7029 (1988); (10.1021/j100335a037)
Sonobe N., Kyotani T., Tomita A., Carbon 28, 483 (1990); (10.1016/0008-6223(90)90042-W) / Carbon by Sonobe N. (1990)
; ibid. 29 9 61 (1991); T. Kyotani H. Yamada N. Sonobe A. Tomita ibid. 32 2 627 (1994);
Kyotani T., Mori T., Tomita A., Chem. Mater. 6, 2138 (1994). (10.1021/cm00047a039) / Chem. Mater. by Kyotani T. (1994)
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Johnson S. A., Brigham E. S., Ollivier P. J., Mallouk T. E., Chem. Mater. 9, 2448 (1997). (10.1021/cm9703278) / Chem. Mater. by Johnson S. A. (1997)
S. A. Johnson D. Khushalani N. Coombs T. E. Mallouk G. A. Ozin J. Mat. Chem. 8 1 13 (1998). (10.1039/a706791g)
Dhal P. K., Arnold F. H., J. Am. Chem. Soc. 113, 7417 (1991). (10.1021/ja00019a046) / J. Am. Chem. Soc. by Dhal P. K. (1991)
Silica colloids were made by a slight modification of the technique described by K. Osseo-Asare and F. J. Arriagada [ Colloids Surf. 50 321 (1990)]. A microemulsion was prepared by rapidly stirring 150 ml of cyclohexane 6 ml of n- hexanol 19 ml of Triton N-101 7 ml of water and 1.7 ml of 28% aqueous ammonia. To this was added 10 ml of tetraethyl orthosilicate and the mixture was stirred at ambient temperature for 2 days. Most of the solvent was removed by rotary evaporation and 100 ml of ethanol was added. The mixture was stirred for 1 hour then centrifuged. The product solid was resuspended in ethanol and centrifuged three times then dried at 80°C. TEM images showed that the particle diameter was 35 ± 2 nm. Tablular pellets (0.7 cm in diameter; thickness 0.3 cm) were made from the dry powder by means of a pellet press.
The pore size plots in Fig. 4B were calculated from adsorption isotherms with a model that is optimized for much smaller slit-shaped pores (24). The maxima are systematically shifted to pore diameters larger than are found by TEM (Figs. 1 through 3).
J. P. Olivier W. B. Conklin M. Y. Szombathely in Characterization of Porous Solids . Proceedings of the IUPAC Symposium (COPS III) (Elsevier Marseille France 1993).
This work was supported by grant GM-43844 from NIH. We thank R. Walsh and the Electron Microscope Facility for the Life Sciences in the Biotechnology Institute at Pennsylvania State University for the use of the TEM and S. Kumar P. Sokol and J. Patel for helpful discussions.

Dates

Type	When
Created	23 years, 1 month ago (July 27, 2002, 5:40 a.m.)
Deposited	1 year, 7 months ago (Jan. 12, 2024, 10:08 p.m.)
Indexed	1 month ago (July 23, 2025, 8:40 a.m.)
Issued	26 years, 6 months ago (Feb. 12, 1999)
Published	26 years, 6 months ago (Feb. 12, 1999)
Published Print	26 years, 6 months ago (Feb. 12, 1999)

Funders 0

None

BibTeX

@article{Johnson_1999, title={Ordered Mesoporous Polymers of Tunable Pore Size from Colloidal Silica Templates}, volume={283}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.283.5404.963}, DOI={10.1126/science.283.5404.963}, number={5404}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Johnson, Stacy A. and Ollivier, Patricia J. and Mallouk, Thomas E.}, year={1999}, month=feb, pages={963–965} }

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