Effective Gelation of Water Using a Series of Bis-urea Dicarboxylic Acids We thank the National Science Foundation (CHE9817240) for financial support of this work and Dr. James Eckert (Department of Geology, Yale University) for assistance with the electron microscopy. We also thank R. E. Meléndez for compound 1.
Estroff
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Department of Chemistry Yale University P.O. Box 208107, New Haven, CT 06520-8107 (USA).
Hamilton
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