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Cyclodextrins mechanically interlocked

Mechanically-Interlocked Molecular Systems Incorporating Cyclodextrins... [Pg.374]

A main chain polyrotaxane, a mechanically interlocked structure that can be considered as a string of pearls, in which the strand is the polymer backbone and the pearls are the cychc species threaded onto the strand. The backbone polymer can be a polyester, polyamide, poly(ethylene oxide), or virtually any linear polymer. The cyclic species are typically crown ethers, cyclodextrins (CDs), cucurbimrils, and calix-arenes. Polyrotaxanes can be made by two different methods statistical threading or via the template approach (enthalpi-cally driven). The statistical approach utilizes le Chatelier s principle with an excess macrocycle during the polymerization. The template approach is driven by attractive interactions of the macrocyclic species with either the monomer... [Pg.693]

Polyrotaxanes, in which many cyclic molecules are mechanically interlocked onto a polymeric chain, have been synthesized using macrocyclic compounds such as cyclodextrins, crown ethers and blue boxes. Synthesis of pillar[5]arene-based polyrotaxanes consisting of cationic polymers, such as viologen polymer, is relatively easy because pillar[5]arene forms stable host-guest complexes with cationic molecules (see details in Chapter 9) however, it is difficult to synthesize nonionic polymer-based polyrotaxanes. To synthesize nonionic polymer-based polyrotaxanes, we used a liquid... [Pg.197]


See other pages where Cyclodextrins mechanically interlocked is mentioned: [Pg.160]    [Pg.187]    [Pg.16]    [Pg.258]    [Pg.81]    [Pg.258]    [Pg.359]    [Pg.2002]    [Pg.573]    [Pg.515]    [Pg.573]    [Pg.3]    [Pg.187]    [Pg.1320]    [Pg.377]   


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