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- W3208935145 abstract "Cu(0)-reversible deactivation radical polymerization (RDRP) is a versatile polymerization tool, providing rapid access to well-defined polymers while utilizing mild reaction conditions and low catalyst loadings. However, thus far, this method has not been applied to tailor dispersity, a key parameter that determines the physical properties and applications of polymeric materials. Here, we report a simple to perform method, whereby Cu(0)-RDRP can systematically control polymer dispersity (Đ = 1.07–1.72), while maintaining monomodal molecular weight distributions. By varying the ligand concentration, we could effectively regulate the rates of initiation and deactivation, resulting in polymers of various dispersities. Importantly, both low and high dispersity PMA possess high end-group fidelity, as evidenced by MALDI-ToF-MS, allowing for a range of block copolymers to be prepared with different dispersity configurations. The scope of our method can also be extended to include inexpensive ligands (i.e., PMDETA), which also facilitated the polymerization of lower propagation rate constant monomers (i.e., styrene) and the in situ synthesis of block copolymers. This work significantly expands the toolbox of RDRP methods for tailoring dispersity in polymeric materials." @default.
- W3208935145 created "2021-11-08" @default.
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- W3208935145 creator A5051760519 @default.
- W3208935145 creator A5067466628 @default.
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- W3208935145 date "2021-10-26" @default.
- W3208935145 modified "2023-09-27" @default.
- W3208935145 title "Tuning Ligand Concentration in Cu(0)-RDRP: A Simple Approach to Control Polymer Dispersity" @default.
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- W3208935145 doi "https://doi.org/10.1021/acspolymersau.1c00030" @default.
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