Dutta, Sounak ; Das, Dibyendu ; Dasgupta, Antara ; Das, Prasanta Kumar (2010) Amino acid based low-molecular-weight ionogels as efficient dye-adsorbing agents and templates for the synthesis of TiO2 nanoparticles Chemistry - A European Journal, 16 (5). pp. 1493-1505. ISSN 0947-6539
Full text not available from this repository.
Official URL: http://onlinelibrary.wiley.com/doi/10.1002/chem.20...
Related URL: http://dx.doi.org/10.1002/chem.200901917
Abstract
The gelation of ionic liquids is attracting significant attention because of its large spectrum of applications across different disciplines. These ‘green solvents’ have been the solution to a number of common problems due to their eco-friendly features. To expand their applications, the gelation of ionic liquids has been achieved by using amino acid-based low-molecular-weight compounds. Variation of individual segments in the molecular skeleton of the gelators, which comprise the amino acid and the protecting groups at the N and C termini, led to an understanding of the structure–property correlation of the ionogelation process. An aromatic ring containing amino acid-based molecules protected with a phenyl or cyclohexyl group at the N terminus were efficient in the gelation of ionic liquids. In the case of aliphatic amino acids, gelation was more prominent with a phenyl group as the N-terminal protecting agent. The probable factors responsible for this supramolecular association of the gelators in ionic liquids have been studied with the help of field-emission SEM, 1H, NMR, FTIR, and luminescence studies. It is the hydrophilic–lipophilic balance that needs to be optimized for a molecule to induce gelation of the green solvents. Interestingly, to maximize the benefits from using these green solvents, these ionogels have been employed as templates for the synthesis of uniform-sized TiO2 nanoparticles (25–30 nm). Furthermore, as a complement to their applications, ionogels serve as efficient adsorbents of both cationic and anionic dyes and were distinctly better relative to their organogel counterparts.
Item Type: | Article |
---|---|
Source: | Copyright of this article belongs to John Wiley & Sons, Inc. |
Keywords: | Gels; Green Chemistry; Hydrogen Bonds; Ionic Liquids; Nanoparticles |
ID Code: | 108602 |
Deposited On: | 01 Feb 2018 11:17 |
Last Modified: | 01 Feb 2018 11:17 |
Repository Staff Only: item control page