Iterative Exponential Growth Synthesis and Assembly of Uniform Diblock Copolymers
| Autor: | Deborah J. C. Ehrlich, Yufeng Wang, Hung V.-T. Nguyen, Matthew R. Golder, Mingjiang Zhong, Jonathan C. Barnes, Yivan Jiang, Jeremiah A. Johnson |
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| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Molar mass 010405 organic chemistry General Chemistry Polymer Decane 010402 general chemistry 01 natural sciences Biochemistry Catalysis 0104 chemical sciences law.invention chemistry.chemical_compound Colloid and Surface Chemistry chemistry Exponential growth Chemical engineering law Phase (matter) Polymer chemistry Side chain Copolymer Crystallization |
| Zdroj: | Journal of the American Chemical Society. 138:9369-9372 |
| ISSN: | 1520-5126 0002-7863 |
| DOI: | 10.1021/jacs.6b04964 |
| Popis: | Studies on the phase segregation of unimolecular block copolymers (BCPs) are limited by a lack of reliable, versatile methods for the synthesis of such polymers on the preparative scale. Herein, we describe an advancement of Iterative Exponential Growth (IEG) wherein chiral allyl-based IEG oligomers are subjected to thiol-ene reactions and converted into unimolecular BCPs. With this strategy we have synthesized uniform BCPs with molar masses up to 12.1 kDa on ∼1 g scale. BCPs composed of decane-based side chains and either triethyleneglycol- or thioglycerol-based side chains phase-segregate into hexagonal cylinder morphologies. The assembly is not driven by side-chain crystallization, but is instead the result of amorphous BCP assembly. |
| Databáze: | OpenAIRE |
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