Onedimensional supramolecular assemblies

1
One-dimensional supramolecular assemblies
Dendron-rod-coil

• Rod
• ?-? stacking
• rigid

HO
OH
O
O
O
O
O
O
O
O
O
O
O
O
OH
-
m
n
HO
nm9

• Dendron
• hydrogen bonding
• ?-? stacking
• bulky

• Coil
• structurally diverse
• hydrophobic
• flexibile

2
Synthesis of dendron rodcoil
Stupp et al. J. Am. Chem. Soc. 123, 4105 (2001)
3
Supramolecular gels formed by dendron rodcoil
molecules
Stupp et al. Chem. Eur. J. 2006, 12, 7313-7327.
4
One-dimensional supramolecular structures of DRC
5
NMR spectra before and after gelation
6
AFM tapping mode images of DRC nanoribbon
7
Analogous DRC molecules
8
SAXS of DRC analogues
9
Analogous DRC molecules (dendrons generation
series)
10
Analogous DRC compounds (coil series)
11
Rod-dendron model compounds
12
Crystal structure of dendron
13
Hydrogen bonded stacks of dendron dimers
14
(No Transcript)
15
Unit cell of the crystal
16
Crystal structure of rod-dendron compound
17
Supramolecular ribbon formed by DRC molecules