{"doi":"10.1021/acs.macromol.9b02380","title":"Efficient Synthesis of Asymmetric Miktoarm Star Polymers","abstract":"Asymmetric miktoarm star polymers produce unique material properties, yet existing synthetic strategies are beleaguered by complicated reaction schemes restricted in both the monomer scope and yield. Here, we introduce a new synthetic approach coined “μSTAR”, miktoarm synthesis by termination after ring-opening metathesis polymerization, that circumvents these traditional synthetic limitations by constructing the block–block junction in a scalable one-pot process involving (1) grafting-through polymerization of a macromonomer followed by (2) in situ enyne-mediated termination to install a single mikto-arm with exceptional efficiency. This modular μSTAR platform cleanly generates ABn and A(BA′)n miktoarm star polymers with unprecedented versatility in the selection of A and B chemistries as demonstrated using many common polymer building blocks. The average number of B or BA′ arms (n) is easily controlled by the equivalents of Grubbs catalyst. While these materials are characterized by dispersity in n that arises from the statistics of polymerization, they self-assemble into mesophases that are identical to those predicted for precise miktoarm stars. In summary, the μSTAR technique provides a significant boost in design flexibility and synthetic simplicity while retaining the salient phase behavior of precise miktoarm star materials.","journal":"Macromolecules","year":2020,"id":65474,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":57,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.953,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":346857,"name":"Liangbing Fu","orcid":"0009-0001-1799-449X","position":1,"is_corresponding":false},{"id":346858,"name":"Joshua Lequieu","orcid":"0000-0001-9480-0989","position":2,"is_corresponding":false},{"id":349118,"name":"Jacob D. Horne","orcid":null,"position":3,"is_corresponding":false},{"id":349119,"name":"Jacob R. Blankenship","orcid":null,"position":4,"is_corresponding":false},{"id":346859,"name":"Sanjoy Mukherjee","orcid":"0000-0001-6810-9502","position":5,"is_corresponding":false},{"id":349120,"name":"Tianqi Zhang","orcid":null,"position":6,"is_corresponding":false},{"id":4001,"name":"Glenn H. Fredrickson","orcid":"0000-0002-6716-9017","position":7,"is_corresponding":false},{"id":346860,"name":"Will R. Gutekunst","orcid":"0000-0002-2427-4431","position":8,"is_corresponding":false},{"id":346861,"name":"Christopher M. Bates","orcid":"0000-0002-1598-794X","position":9,"is_corresponding":false},{"id":349117,"name":"Adam E. Levi","orcid":null,"position":0,"is_corresponding":true}],"reference_count":91,"raw_metadata":null,"created_at":"2026-07-18T21:13:43.728351Z","pmid":"32489220","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}