Butylamide-terminated poly(amidoamine) dendritic gelators
Butylamide-terminated poly(amidoamine) dendrons with either a Boc group ( C-n ( n = 1, 2, 3)) or a carboxyl group ( E-n ( n = 1, 2)) at the focal point were synthesized and their gelation properties were studied. Butylamide-terminated poly(amidoamine) dendrons with either a Boc group ( C-n ( n = 1,...
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Published in | Tetrahedron letters Vol. 49; no. 43; pp. 6182 - 6187 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
OXFORD
Elsevier Ltd
20.10.2008
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | Butylamide-terminated poly(amidoamine) dendrons with either a Boc group (
C-n (
n
=
1, 2, 3)) or a carboxyl group (
E-n (
n
=
1, 2)) at the focal point were synthesized and their gelation properties were studied.
Butylamide-terminated poly(amidoamine) dendrons with either a Boc group (
C-n (
n
=
1, 2, 3)) or a carboxyl group (
E-n (
n
=
1, 2)) at the focal point, as a new kind of dendritic gelators, were synthesized and their gelation properties were studied by TEM, WAXD, SAXS, NMR,and FTIR spectroscopy. It was found that the structure of focal groups impacted greatly on their gelation ability and the dendrons with higher generations facilitated the gel phase assembly. Hydrogen-bonding and hydrophobic interactions were proved to be the main driving forces responsible for the fibrous assembly with the diameter in the range of 30–100
nm. The molecular packing pattern of the xerogels of
C-2,
C-3,
E-1, and
E-2 all showed a lamellar structure, which was revealed by WAXD and SAXS. |
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ISSN: | 0040-4039 1873-3581 |
DOI: | 10.1016/j.tetlet.2008.08.008 |