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Issue 9, 2011
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Supramolecular hydrogels of adenine: morphological, structural and rheological investigations

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Abstract

Hydrogelation of adenine has been tested here with three isomers of benzene tricarboxylic acid. Upon cooling the homogeneous solution, adenine formed an instantaneous gel with one isomer while the other two did not. Hydrogels were thermoreversible in nature and were characterized with the help of 1H-NMR, FE-SEM, TEM, AFM, PL, XRD, FT-IR and rheological analyses. 1H-NMR studies showed the formation of molecular interaction between adenine and 1,3,5-benzenetricarboxylic acid (1,3,5-B) to form a supramolecular complex that led to the production of gel with a large volume of water. The morphological investigation of dried gel revealed the network of nanofibers that assembled further into belt-like thick fibers. FT-IR and X-ray studies showed that in the gel adenine and 1,3,5-B were mainly assembled through hydrogen bonding interactions into a layered structure, and the interlayer distance was 1.52 nm. The gel network formed as a result of controlled aggregation between adenine and 1,3,5-B was stable even after large deformation under rheological investigations.

Graphical abstract: Supramolecular hydrogels of adenine: morphological, structural and rheological investigations

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Article information


Submitted
14 Jan 2011
Accepted
23 Feb 2011
First published
17 Mar 2011

Soft Matter, 2011,7, 4234-4241
Article type
Paper

Supramolecular hydrogels of adenine: morphological, structural and rheological investigations

P. K. Sukul and S. Malik, Soft Matter, 2011, 7, 4234
DOI: 10.1039/C1SM05055A

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