2024-03-29T12:30:29Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00021211
2022-12-14T04:22:59Z
1309:1310
Physical gelation by amides derived from trans-1, 2-diaminocyclohexane and their tetrasiloxane-based gelators
Nakagawa, Haruka
Suzuki, Masahiro
Hanabusa, Kenji
Four compounds were prepared from trans-1,2-diaminocyclohexane and were subsequently studied as gelators. These two compounds were chiral trans-(1R,2R)-1-(2-heptylundecanoylamino)-2-(10-undecenoylamino) cyclohexane and the corresponding racemate. The other two compounds were 1,1,3,3,5,5,7,7-octamethyltetrasiloxane-containing chiral and racemic compounds prepared by a hydrosilylation reaction. Their gelation abilities were evaluated on the basis of the minimum gel concentration, using seven solvents. The thermal stability and transparency of the gels were investigated by UV-vis spectroscopy using three-component mixed solvents of hexadecyl 2-ethylhexanoate, liquid paraffin, and decamethylcyclopentasiloxane (66 combinations). The gel-to-sol phase-transition temperatures were also studied. The viscoelastic behavior of the gels was studied by rheology measurements in the strain sweep mode. Aggregates consisting of three-dimensional networks were studied by transmission electron microscopy. Circular dichroism spectroscopy was performed to verify the existence of helical aggregates in the gel.
Article
POLYMER JOURNAL.49(5):439-447(2017)
NATURE PUBLISHING GROUP
2017-02-08
eng
journal article
AM
http://hdl.handle.net/10091/00021968
https://soar-ir.repo.nii.ac.jp/records/21211
https://doi.org/10.1038/pj.2017.1
10.1038/pj.2017.1
0032-3896
AA00777013
POLYMER JOURNAL
49
5
439
447
https://soar-ir.repo.nii.ac.jp/record/21211/files/15K05623_04.pdf
application/pdf
1.0 MB
2020-03-12