Details
| Original language | English |
|---|---|
| Pages (from-to) | 104-108 |
| Number of pages | 5 |
| Journal | Microporous and Mesoporous Materials |
| Volume | 119 |
| Issue number | 1-3 |
| Publication status | Published - 11 Oct 2008 |
Abstract
A combination of laser-based top-down and chemical bottom-up processes to prepare hierarchical (pore) structures is presented. Polymer templates with dimensions in the micrometer regime are fabricated by two-photon polymerization of an acrylate monomer and are subsequently infiltrated with mesostructured silica using the liquid crystal templating approach. Calcination, which removes both the macro-templating polymer and the nano-templating surfactant molecules, can be carried out so that the morphology of the sample is preserved, delivering SBA-15-type mesoporous constructs which correspond to a replica (or an inverse copy) of the initial polymer structure. This is shown here on simple line structures and on woodpile structures as examples. As the two-photon polymerization allows the controlled construction of various imaginable shapes, mesoporous materials can be constructed with practically any desired morphology on the micrometer scale. The dual pore system of macro- and mesopores classifies these materials as hierarchical pore systems with applications in catalysis and sorption. In addition, the versatility of silica surface chemistry opens new venues for the fabrication of photonic crystals and the general biocompatibility of silica allows the construction of scaffolds for biomedical applications.
Keywords
- Hierarchical pore system, Mesostructured silica, Two-photon polymerization
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
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In: Microporous and Mesoporous Materials, Vol. 119, No. 1-3, 11.10.2008, p. 104-108.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Microstructured templates produced using femtosecond laser pulses as templates for the deposition of mesoporous silicas
AU - Heinroth, Falk
AU - Bremer, Imke
AU - Münzer, Simon
AU - Behrens, Peter
AU - Reinhardt, Carsten
AU - Passinger, Sven
AU - Ohrt, Christoph
AU - Chichkov, Boris
PY - 2008/10/11
Y1 - 2008/10/11
N2 - A combination of laser-based top-down and chemical bottom-up processes to prepare hierarchical (pore) structures is presented. Polymer templates with dimensions in the micrometer regime are fabricated by two-photon polymerization of an acrylate monomer and are subsequently infiltrated with mesostructured silica using the liquid crystal templating approach. Calcination, which removes both the macro-templating polymer and the nano-templating surfactant molecules, can be carried out so that the morphology of the sample is preserved, delivering SBA-15-type mesoporous constructs which correspond to a replica (or an inverse copy) of the initial polymer structure. This is shown here on simple line structures and on woodpile structures as examples. As the two-photon polymerization allows the controlled construction of various imaginable shapes, mesoporous materials can be constructed with practically any desired morphology on the micrometer scale. The dual pore system of macro- and mesopores classifies these materials as hierarchical pore systems with applications in catalysis and sorption. In addition, the versatility of silica surface chemistry opens new venues for the fabrication of photonic crystals and the general biocompatibility of silica allows the construction of scaffolds for biomedical applications.
AB - A combination of laser-based top-down and chemical bottom-up processes to prepare hierarchical (pore) structures is presented. Polymer templates with dimensions in the micrometer regime are fabricated by two-photon polymerization of an acrylate monomer and are subsequently infiltrated with mesostructured silica using the liquid crystal templating approach. Calcination, which removes both the macro-templating polymer and the nano-templating surfactant molecules, can be carried out so that the morphology of the sample is preserved, delivering SBA-15-type mesoporous constructs which correspond to a replica (or an inverse copy) of the initial polymer structure. This is shown here on simple line structures and on woodpile structures as examples. As the two-photon polymerization allows the controlled construction of various imaginable shapes, mesoporous materials can be constructed with practically any desired morphology on the micrometer scale. The dual pore system of macro- and mesopores classifies these materials as hierarchical pore systems with applications in catalysis and sorption. In addition, the versatility of silica surface chemistry opens new venues for the fabrication of photonic crystals and the general biocompatibility of silica allows the construction of scaffolds for biomedical applications.
KW - Hierarchical pore system
KW - Mesostructured silica
KW - Two-photon polymerization
UR - http://www.scopus.com/inward/record.url?scp=58149392988&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2008.10.004
DO - 10.1016/j.micromeso.2008.10.004
M3 - Article
AN - SCOPUS:58149392988
VL - 119
SP - 104
EP - 108
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
SN - 1387-1811
IS - 1-3
ER -