Molecules that assemble by sound: an application to the instant gelation of stable organic fluids.
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.
Naota
Takeshi
T
Department of Chemistry, Graduate School of Engineering Science, Osaka University, PRESTO, Japan. naota@chem.es.osaka-u.ac.jp
Koori
Hiroshi
H