Abstract
Supramolecular chemistry as a subject has developed rapidly in the last two decades and is now an interdisciplinary branch of chemistry which has reached a high degree of diversity and complexity. Synthesis of supramolecular structures is based on the principle of molecular recognition and molecular self-assembly. Las time the attention is drawn to a new topological type of supramolecular structures comprising a sequence of cyclodextrin (CD) molecules threaded onto polymer chains, “molecular necklaces” [1]. The stability of the complexes depends on the complementarity between the internal cavity of CD and the thickness of the “guest”macromolecule. Thus, poly(ethylene oxide) (PEO) forms crystalline complex with six-membered α-CD, whereas poly(propylene oxide) (PPO) — with seven-membered β-CD. A step forward in this direction was made by using diverse PEO-containing compounds namely, PEO-PPO block copolymers (Proxanols) [2], linear and branched non-ionic detergents [3] and star-shaped supermolecules (conjugates based on proteins and PEO)
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