Hydrogen bonded supramolecular tubules

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Hydrogen bonded supramolecular tubules
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Molecular design of H-bonded rosette macrocycles
Unstable in water
Stable in water
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(No Transcript)
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TEM image of Rosette Nanotubes
50 nm
50 nm
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Rosette Nanotubes with Crown Ether Binding Sites
Fenniri et al. JACS 2002, 124, 11064
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Induction of supramolecular chirality in rosette
nanotubes
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Dendron rodcoil functional triblock
self-assembler

• 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

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Synthesis of dendron rodcoil
Stupp et al. J. Am. Chem. Soc. 123, 4105 (2001)
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Supramolecular gels formed by dendron rodcoil
molecules
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NMR spectra before and after gelation
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One-dimensional supramolecular structures of DRC
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AFM tapping mode images of DRC nanoribbon
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Analogous DRC molecules
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SAXS of DRC analogues
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Analogous DRC molecules (dendrons generation
series)
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Analogous DRC compounds (coil series)
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Rod-dendron model compounds