Journal
MACROMOLECULES
Volume 49, Issue 1, Pages 15-22Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.5b02254
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Funding
- National Natural Science Foundation of China [51303055, 21234002, 21474029]
- National Basic Research Program of China [2012CB933600]
- Research Fund for the Doctoral Program of Higher Education of China [20120074120001]
- Shanghai municipality [15QA1401400, 15ZZ028, 13JC1402000]
- NSERC
- University of Waterloo
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The synthesis of multicomponent superhelices with determined chirality has been realized. By adding water to polymer solution in organic solvents (tetrahydrofuran/ N,N'-dimethylformamide, THF/DMF), poly(gamma-benzyl L-glutamate)block-poly(ethylene glycol) (PBLG-b-PEG) are able to pack orderly around the surface of PBLG homopolymer bundles with designed helical structures, e.g., right-handed and left-handed, depending on THF/DMF ratio and temperature. A systematic investigation leads to the construction of a temperature organic solvent composition phase diagram. Before the organic solvents were totally removed, the chirality of the assemblies can be reversibly switched using temperature stimulus. This temperature-stimulated chirality transition of polypeptide superhelices is unprecedented. Circular dichroism
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