Molecules That Assemble by Sound: An Application to the Instant Gelation of Stable Organic Fluids.
J Am Chem Soc 2005;
127:9324-5. [PMID:
15984832 DOI:
10.1021/ja050809h]
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Abstract
The first molecule that assembles by ultrasound is described. An association-inert dinuclear Pd complex, anti-1a, which is stabilized by intramolecular pi-stacking interactions, gelatinizes a variety of organic solvents instantly upon brief presonication for a few seconds. This is the first quick, positive, and reversible method for the remote switching of stable sol-gel phases. Uniquely, the rate can be precisely controlled over the range between "no gelation" and "instant gelation" simply by tuning the sonication time.
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