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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
Full Text	PDF

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