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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Cruz, Carlos
in Cooperation with on an Cooperation-Score of 37%
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Publications (7/7 displayed)
- 2022Chiral 1D Metal-Organic Materials Based on Cu(II) and Amino Acid Schiff Basescitations
- 2022Synthesis and characterisation of ionic liquid crystals based on substituted pyridinium cationscitations
- 2021Study of magnetoelastic resonance for chemical sensors: Ribbons vs microwirescitations
- 2010Shear-induced lamellar ionic liquid-crystal foamcitations
- 2007Structure and molecular dynamics of the mesophases exhibited by an organosiloxane tetrapode with strong polar terminal groupscitations
- 2006Characterization by fourier transform infrared spectroscopy (FT-IR) and 2D IR correlation spectroscopy of PAMAM dendrimercitations
- 2002Anisotropic hydroxypropylcellulose films as alignment layers of a bistable ferroelectric devicecitations
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article
Characterization by fourier transform infrared spectroscopy (FT-IR) and 2D IR correlation spectroscopy of PAMAM dendrimer
Abstract
FT-IR and 2D correlation spectroscopy were employed to study the microstructural changes ocurring during phase transitions of a liquid crystal poly( amidoamine) codendrimer ( PAMAM (L-1) 16(L-2)16) generation 3, functionalized on the terminal groups by one-chain promesogenic calamitic units (4-(4'-decyloxybenzoyloxy)salicylaldehyde (L-1)) and two-chain promesogenic calamitic units ( 4-(3', 4'-didecyloxybenzoyloxy) salicylaldehyde ( L2)). Spectral modifications associated with molecular conformation rearangements allowing for molecular shape change on going from a liquid-crystalline organization to another were found. The transition temperatures were calculated, and they are in good agreement with the DSC data. Spectral analysis gives evidence of the LC phase transitions and to an additional transition associated with the existence of conformers. Various types of hydrogen bonding have been established.