Abstract
Sugar-appended azonaphthol derivatives 1 possessing an aromatic hydroxyl group and 2 possessing the n-butanoyloxy group were synthesized and proved to be capable of gelating water/ethanol mixtures. Gels formed by gelator 1 displayed different morphologies depending on the gelator concentration. The aqueous gel formed by 3.0 wt % of 1 consisted of crystalline fibers with thicknesses ranging from 400 to 600 nm, whereas at lower a concentration of gelator 1 (0.1 wt %) the gel consisted of a three-dimensional network of fibers with thicknesses of 20 to 30 nm. These gels were subjected to the sol-gel polymerization process, using tetraethoxysilane (TEOS). Interestingly, the obtained silica consisted of nanotubular structures with inner diameters of 20-25 nm and 450-600 nm using two different gels of 1, respectively. These results prove that the diameter size of silica nanotubes can be controlled by varying the gelator concentration.
| Original language | English |
|---|---|
| Pages (from-to) | 17-20 |
| Number of pages | 4 |
| Journal | Nano Letters |
| Volume | 2 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2002 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
Cite this
Preparation of Mesoscale and Macroscale Silica Nanotubes Using a Sugar-Appended Azonaphthol Gelator Assembly. / Jung, Jong Hwa; Shinkai, Seiji; Shimizu, Toshimi.
In: Nano Letters, Vol. 2, No. 1, 01.01.2002, p. 17-20.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Preparation of Mesoscale and Macroscale Silica Nanotubes Using a Sugar-Appended Azonaphthol Gelator Assembly
AU - Jung, Jong Hwa
AU - Shinkai, Seiji
AU - Shimizu, Toshimi
PY - 2002/1/1
Y1 - 2002/1/1
N2 - Sugar-appended azonaphthol derivatives 1 possessing an aromatic hydroxyl group and 2 possessing the n-butanoyloxy group were synthesized and proved to be capable of gelating water/ethanol mixtures. Gels formed by gelator 1 displayed different morphologies depending on the gelator concentration. The aqueous gel formed by 3.0 wt % of 1 consisted of crystalline fibers with thicknesses ranging from 400 to 600 nm, whereas at lower a concentration of gelator 1 (0.1 wt %) the gel consisted of a three-dimensional network of fibers with thicknesses of 20 to 30 nm. These gels were subjected to the sol-gel polymerization process, using tetraethoxysilane (TEOS). Interestingly, the obtained silica consisted of nanotubular structures with inner diameters of 20-25 nm and 450-600 nm using two different gels of 1, respectively. These results prove that the diameter size of silica nanotubes can be controlled by varying the gelator concentration.
AB - Sugar-appended azonaphthol derivatives 1 possessing an aromatic hydroxyl group and 2 possessing the n-butanoyloxy group were synthesized and proved to be capable of gelating water/ethanol mixtures. Gels formed by gelator 1 displayed different morphologies depending on the gelator concentration. The aqueous gel formed by 3.0 wt % of 1 consisted of crystalline fibers with thicknesses ranging from 400 to 600 nm, whereas at lower a concentration of gelator 1 (0.1 wt %) the gel consisted of a three-dimensional network of fibers with thicknesses of 20 to 30 nm. These gels were subjected to the sol-gel polymerization process, using tetraethoxysilane (TEOS). Interestingly, the obtained silica consisted of nanotubular structures with inner diameters of 20-25 nm and 450-600 nm using two different gels of 1, respectively. These results prove that the diameter size of silica nanotubes can be controlled by varying the gelator concentration.
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U2 - 10.1021/nl0100623
DO - 10.1021/nl0100623
M3 - Article
AN - SCOPUS:0003162575
VL - 2
SP - 17
EP - 20
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 1
ER -