Tripodal Tris‐Urea Derivatives as Gelators for Organic Solvents

Several new tripodal tris-urea derivatives are prepared and found to be efficient gelling agents for organic solvents. The structure and thermotropic properties of the gels are studied by electron microscopy, differential scanning calorimetry (DSC) and FT-IR spectroscopy. Remarkably, the range of solvents to be gelled can be tuned by the peripheral substituents.

[1]  S. Shinkai,et al.  Organogels of azacrown-appended cholesterol derivatives can be stabilized by host-guest interactions , 1999 .

[2]  Xu,et al.  The Gelation of CO(2): A Sustainable Route to the Creation of Microcellular Materials. , 1999, Science.

[3]  B. Feringa,et al.  Efficient Intermolecular Charge Transport in Self-Assembled Fibers of Mono- and Bithiophene Bisurea Compounds. , 1999, Angewandte Chemie.

[4]  A. Spek,et al.  Cyclic Bis‐Urea Compounds as Gelators for Organic Solvents , 1999 .

[5]  J. F. Stoddart,et al.  Supramolecular science : where it is and where it is going , 1998 .

[6]  B. Feringa,et al.  REMARKABLE STABILIZATION OF SELF-ASSEMBLED ORGANOGELS BY POLYMERIZATION , 1997 .

[7]  Richard G. Weiss,et al.  Low Molecular Mass Gelators of Organic Liquids and the Properties of Their Gels. , 1997, Chemical reviews.

[8]  B. Feringa,et al.  Self‐Assembly of Bisurea Compounds in Organic Solvents and on Solid Substrates , 1997 .

[9]  K. Hanabusa,et al.  SMALL MOLECULAR GELLING AGENTS TO HARDEN ORGANIC LIQUIDS : TRIALKYL CIS-1,3,5-CYCLOHEXANETRICARBOXAMIDES , 1997 .

[10]  K. Hanabusa,et al.  Excellent gelators for organic fluids: Simple bolaform amides derived from amino acids , 1997 .

[11]  K. Hanabusa,et al.  Formation of Organogels by Intermolecular Hydrogen Bonding between Ureylene Segment. , 1996 .

[12]  RaposoCésar,et al.  Tris(2-aminoethyl)amine, a Suitable Spacer for Phosphate and Sulfate Receptors , 1995 .

[13]  R. Jairam,et al.  Zinc dication inclusion complexes of endodentate tripodands as carbonic anhydrase-inspired artificial esterases , 1992 .

[14]  J. Jadżyn,et al.  Structure of hydrogen-bonded sym-dialkylureas in nonpolar organic media , 1987 .

[15]  Y. Mido.  An infrared study of various dialkylureas in solution , 1973 .

[16]  A. Fredrickson.  Principles and Applications of Rheology , 1964 .