Self-assembly of Congo Red—A theoretical and experimental approach to identify its supramolecular organization in water and salt solutions
✍ Scribed by M. Skowronek; B. Stopa; L. Konieczny; J. Rybarska; B. Piekarska; E. Szneler; G. Bakalarski; I. Roterman
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1998
- Tongue
- English
- Weight
- 372 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
The supramolecular organization of Congo Red molecules was studied to approach an understanding of the unusual complexation characteristics associated with the liquid crystalline nature of this dye. Differential scanning calorimetry (DSC) and nmr data indicate that Congo Red assembly arrangements differ in water and salt solutions. Compact, highly ordered material with a distinct melting transition is created, but not below 0.3% sodium chloride concentration. The twist in the assembly arrangement of Congo Red molecules, caused in water by repulsion, decreases when the charges are shielded, allowing for more overlapping of the