COLL 406 |
| Hak Soo Choi, Tooru Ooya, and Nobuhiko Yui. School of Materials Science, JAIST, 1-1 Asahidai, Tatsunokuchi, Ishikawa, 923-1292, Japan |
| Various types of cyclodextrin-conjugated poly(ε-lysine)s (CDPLs) were prepared as polymeric hosts and used to construct supramolecular assembly with a specific guest moiety. In those systems, β-CDPL/3-(trimethylsilyl)propionic acid (TPA) complexes showed very rapid induction of supramolecular aggregates (within 100 ms). It might be resulted from the inclusion complexation of the polymeric hosts with hydrophobic part of the guest molecules and simultaneous association of these inclusion complexes by cooperative intermolecular interactions. Based on these dual complex interactions, these supramolecular assemblies showed rapid and reversible responses with a small change of pH or temperature. The delicate control of critical aggregation temperature was accomplished by changing the degree of substitution as well as varying molar feed ratio or solution concentrations across their upper critical solution temperature. This rapid and elaborate supramolecular assembling system is promising as smart materials and can find a broad range of applications. |
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“Smart” Polymers on Surfaces and Colloids
8:30 AM-11:40 AM, Wednesday, March 31, 2004 Marriott -- Grand Ballroom J, Oral
Division of Colloid and Surface Chemistry |