Self-organization of amphiphilic macromolecules with local helix structure in concentrated solutions |
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Authors: | M K Glagolev V V Vasilevskaya A R Khokhlov |
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Institution: | A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Vavilova Str. 28, 119991, Moscow, Russia. |
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Abstract: | Concentrated solutions of amphiphilic macromolecules with local helical structure were studied by means of molecular dynamic simulations. It is shown that in poor solvent the macromolecules are assembled into wire-like aggregates having complex core-shell structure. The core consists of a hydrophobic backbone of the chains which intertwine around each other. It is protected by the shell of hydrophilic side groups. In racemic mixture of right-hand and left-hand helix macromolecules the wire-like complex is a chain of braid bundles of macromolecules with the same chirality stacking at their ends. The average number of macromolecules in the wire cross-section is close to that of separate bundles observed in dilute solutions of such macromolecules. The effects described here could serve as a simple model of self-organization in solutions of macromolecules with local helical structure. |
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