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Inclusion Polymers (Paperback, Softcover reprint of hardcover 1st ed. 2009)
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Inclusion Polymers (Paperback, Softcover reprint of hardcover 1st ed. 2009)
Series: Advances in Polymer Science, 222
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Since Hermann Staudinger coined the concept of macromolecules as
covalently linked very large molecular entities in 1922, the main
focus of ongoing research has been on the synthesis of polymers and
copolymers leading to a great variety of stable, structural, and
functional materials. On the other hand, during the last 15 years
the knowledge about supramolecular self-organization of polymers
with low molecular-weight compounds by reversible non-covalent
interactions gained increasing attention. In particular, the
interactions of cyclic molecules, called hosts, with polymersbecame
increasingly attractive, since the propertiesof polymerssuch
assolubilityor crystallinitycanbe alteredwithoutthe needof
chemicalreactions. In contrast to regular polymersor copolymers,
supramolecularstructurescomprisedof polymers and ring-shaped hosts
are not totally stable. Therefore they can show p- grammable
lifetimes or adapt speci?cally to different environments. In this
respect polymeric supramolecular structures resemble living systems
more than regular polymers. This volume is mainly devoted to a very
fascinating class of ring-shaped cyclic ?(1?4) linked
oligo-glucans, named cyclodextrins. Cyclodextrins are industrially
produced from the renewable resource starch. They are especially
suitable for the self-assembly of water based supramolecular
structures, and they are highly b- compatible. Cyclodextrinsare
able to complexboth monomersand polymerswhich offer suitable
hydrophobic binding sites. The driving forces are mainly van der
Waals and hydrophobic interactions. This complexation process is
called inc- sion and the resulting supramolecular structures
inclusion compounds. In addition, Chapter 6 of this volume is
devoted to another interesting host, a cyclic urea c- pound called
cucurbituril, which is able to recognize cationic guest molecules
in aqueous solution
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