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http://dx.doi.org/10.5012/bkcs.2011.32.9.3267

Mechanism of Organogel Formation from Mixed-Ligand Silver (I) Carboxylates  

Kim, Ji-Yeon (Department of Bio & Nano Chemistry, Kookmin University)
Park, Cheol-Hee (Corporate R&D, LG Chem Research Park)
Kim, Sang-Ho (Department of Chemistry, Kongju National University)
Yoon, Sung-Ho (Department of Bio & Nano Chemistry, Kookmin University)
Piao, Longhai (Department of Chemistry, Kongju National University)
Publication Information
Bulletin of the Korean Chemical Society / v.32, no.9, 2011 , pp. 3267-3273 More about this Journal
Abstract
Ag(I) carboxylate gelators with mixed-ligands were systemically investigated to understand the mechanism of the organic gel formation. The gelators constructed 3-D networks of nanometer-sized thin fibers which facilitated gel formation in various aromatic organic solvents, even at very low concentrations. The loss of reflection peaks in the X-ray diffraction data indicated the reduction of strong interactions between the long alkyl chains as the Ag(I) carboxylates formed gels by maximizing their interactions with the organic solvents. The gelation temperature ($T_{gel}$) was measured to explore the interaction between the gelator molecules and solvents depending on their composition and concentration. Based on the gelation phenomena, a dissociation/re-association mechanism was proposed.
Keywords
Gel; Coordination polymer; Solubility; Gel transition temperature;
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