Low molecular weight gelator containing β-diketonato ligands: Stabilization of gels by metal coordination

Chemistry Letters

Volumn , Issue 10, 2000, Pages 1168-1169

  Hanabusa, Kenji ^a   Maesaka, Yukinobu ^a   Suzuki, Masahiro ^a   Kimura, Mutsumi ^a   Shirai, Hirofusa ^a  

^a NONE

Author keywords

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Indexed keywords

EID: 0034335901     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2000.1168     Document Type: Article

References (23)

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20. See five organometallic compounds described in page 246 of Ref. 1.
21. A tube tilting method is as follows: a weighed gelator was mixed with an organic liquid (2.0 mL) in a test tube with screw cap (inside diameter; 14 mm) and the mixture was heated until the solid was dissolved. The resulting solution was cooled at 25 °C for 2 h and then the gelation was checked visually. When upon inversion of the test tube no fluid ran down the walls of the tube, we judged it "gel". When the gel was formed, we evaluated quantitatively the gel-forming ability by minimum gel concentration (M.G.C.) which is the minimum concentration of gelator necessary for gelation at 25 °C.
22. K. Hanabusa, M. Yamada, M. Kimura, and H. Shirai, Angew. Chem., Int. Ed. Engl., 35, 1949 (1996).
23. A steel ball (weight; 5.5 g, diameter; 11 mm) was placed on the surface of a gel and then the temperature was gradually increased. When the steel ball went down with a collapse of the gel, we determined the temperature as sol-gel transition one.