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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 32, Number 9
BKCSDE 32(9)
September 20, 2011 

 
Title
Mechanism of Organogel Formation from Mixed-Ligand Silver (I) Carboxylates
Author
Jiyeon Kim, Cheol-Hee Park, Sang-Ho Kim,*, Sungho Yoon*, Longhai Piao*,
Keywords
Gel, Coordination polymer, Solubility, Gel transition temperature
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 (Tgel) 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.
Page
3267 - 3273
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