Abstract
Biomimetic porous silica films have been synthesized by polycondensation of tetraethoxysilane on a soft template formed by an "end-tethered poly(L-lysine)" ("t-PLL") monolayer with a brushlike configuration. The silica formation occurs spontaneously inside the t-PLL at neutral pH and room temperature. The growth of silica fully conforms to the original t-PLL film thicknesses and lateral micropatterns, regardless of a prolonged reaction time and the monomer concentration. The morphologies of biomimetic silica are changed from continuous pleated, discrete spherical to fibrous forms according to the initial t-PLL chain length and surface density. After the t-PLL template is burned off, TEM images show the creation of nanochannel arrays in silica with an average diameter of 10 nm. Overall, our approach has provided a straightforward and environmentally friendly route to directly generate silica films with controllable morphology, thickness, and porosity.
| Original language | English |
|---|---|
| Pages (from-to) | 6148-6156 |
| Number of pages | 9 |
| Journal | Chemistry of Materials |
| Volume | 20 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 2008 Oct 14 |
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ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Materials Chemistry
Cite this
Biomimetic synthesis of silica films directed by polypeptide brushes. / Wu, Jen Chia; Wang, Yuli; Chen, Chia Chun; Chang, Ying Chih.
In: Chemistry of Materials, Vol. 20, No. 19, 14.10.2008, p. 6148-6156.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Biomimetic synthesis of silica films directed by polypeptide brushes
AU - Wu, Jen Chia
AU - Wang, Yuli
AU - Chen, Chia Chun
AU - Chang, Ying Chih
PY - 2008/10/14
Y1 - 2008/10/14
N2 - Biomimetic porous silica films have been synthesized by polycondensation of tetraethoxysilane on a soft template formed by an "end-tethered poly(L-lysine)" ("t-PLL") monolayer with a brushlike configuration. The silica formation occurs spontaneously inside the t-PLL at neutral pH and room temperature. The growth of silica fully conforms to the original t-PLL film thicknesses and lateral micropatterns, regardless of a prolonged reaction time and the monomer concentration. The morphologies of biomimetic silica are changed from continuous pleated, discrete spherical to fibrous forms according to the initial t-PLL chain length and surface density. After the t-PLL template is burned off, TEM images show the creation of nanochannel arrays in silica with an average diameter of 10 nm. Overall, our approach has provided a straightforward and environmentally friendly route to directly generate silica films with controllable morphology, thickness, and porosity.
AB - Biomimetic porous silica films have been synthesized by polycondensation of tetraethoxysilane on a soft template formed by an "end-tethered poly(L-lysine)" ("t-PLL") monolayer with a brushlike configuration. The silica formation occurs spontaneously inside the t-PLL at neutral pH and room temperature. The growth of silica fully conforms to the original t-PLL film thicknesses and lateral micropatterns, regardless of a prolonged reaction time and the monomer concentration. The morphologies of biomimetic silica are changed from continuous pleated, discrete spherical to fibrous forms according to the initial t-PLL chain length and surface density. After the t-PLL template is burned off, TEM images show the creation of nanochannel arrays in silica with an average diameter of 10 nm. Overall, our approach has provided a straightforward and environmentally friendly route to directly generate silica films with controllable morphology, thickness, and porosity.
UR - http://www.scopus.com/inward/record.url?scp=54849409468&partnerID=8YFLogxK
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U2 - 10.1021/cm8017659
DO - 10.1021/cm8017659
M3 - Article
AN - SCOPUS:54849409468
VL - 20
SP - 6148
EP - 6156
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 19
ER -