Organogelators from Self-Assembling Peptide based Dendrimers: Structural and Morphological Features.
IR@IICB: CSIR-Indian Institute of Chemical Biology, Kolkata
View Archive Info| Field | Value | |
| Title |
Organogelators from Self-Assembling Peptide based Dendrimers: Structural and Morphological Features.
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| Creator |
Palui, Goutam
Simon, Franc¸ois-Xavier Schmutz, Marc Mesini, Philippe J Banerjee, Arindam |
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| Subject |
Chemistry
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| Description |
Two peptide based dendrimers containing L-aspartic acid as the branching unit and succinic acid/terephthalic acid as the core unit were synthesized,
characterized, and studied. These dendritic peptides form gels in various organic solvents including n-hexanol, benzene, toluene, chlorobenzene,
1,2-dichlorobenzene, o-xylene, tetralin, and nitrobenzene. Gels were characterized by freeze fracture transmission electron
microscopic (FF-TEM), field emission scanning electron microscopic (SEM), transmission electron microscopic (TEM), wide angle X-ray powder
diffraction (WAXPD), and variable temperature FTIR (VT-FTIR) studies. The VT-FTIR study indicates that amides and ester groups are
involved in intermolecular hydrogen bonding in the gel state. Two transitions have been observed for both the dendrimer gels upon heating:
the first one corresponds to the gel to sol transition and corresponds to the breaking of hydrogen bonds between esters and amides; the second
one corresponds to the breaking of hydrogen bonds between amides. In the case of dendrimer 1 structural reorganization occurs in the sol state
after the first transition, which is absent in the dendrimer 2 in the sol state. FF-TEM observations showed that both dendritic peptides form
a platelet structure in gel state. SEM images of these dried gels indicate different geometry in different solvents in their self-assembled gel state.
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| Publisher |
Elsevier
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| Date |
2008
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://www.eprints.iicb.res.in/976/1/TETRAHEDRON__64(1_)__175%2D185;2008[141].pdf
Palui, Goutam and Simon, Franc¸ois-Xavier and Schmutz, Marc and Mesini, Philippe J and Banerjee, Arindam (2008) Organogelators from Self-Assembling Peptide based Dendrimers: Structural and Morphological Features. Tetrahedron, 64 (1). pp. 175-185. |
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| Relation |
http://dx.doi.org/10.1016/j.tet.2007.10.061
http://www.eprints.iicb.res.in/976/ |
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