{"doi":"10.1093/micmic/ozac023","title":"Multimodal STEM Investigation of Polymer Damage Processes Induced by Electron Beam Irradiation","abstract":"Abstract Self-assembled polymer nanostructures are useful for many applications, including biomedicine, energy, and sensing, often presenting a more stable and customizable alternative for drug delivery than lipid-based assemblies, like liposomes. Polyethylene glycol-b-poly(propylene sulfide) (PEG-b-PPS) nanostructures are an example of a cutting-edge self-assembled polymer system. Here, to better understand the impact of electron irradiation on the molecular and macroscale structure, we utilize analytical scanning transmission electron microscopy. Through electron energy-loss spectroscopy (EELS), we access information regarding the degradation of PEG-b-PPS self-assembled polymers under the electron beam. By coupling the spatial and temporal resolution afforded by EELS, we describe the movement of elements in the polymer system during radiolysis and propose a mechanism for sample degradation. We believe this work will serve as a blueprint to determine the effects of electron irradiation on polymer architectures via spectroscopy.","journal":"Microscopy and Microanalysis","year":2022,"id":296270,"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":1,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9506,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2022-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":363599,"name":"Sharan Bobbala","orcid":"0000-0002-0740-330X","position":1,"is_corresponding":false},{"id":409644,"name":"Mallika Modak","orcid":"0000-0001-8635-1626","position":2,"is_corresponding":false},{"id":658153,"name":"Roberto dos Reis","orcid":"0000-0002-6011-6078","position":3,"is_corresponding":false},{"id":363601,"name":"Evan A. Scott","orcid":"0000-0002-8945-2892","position":4,"is_corresponding":false},{"id":461397,"name":"Vinayak P. Dravid","orcid":"0000-0002-6007-3063","position":5,"is_corresponding":false},{"id":462543,"name":"Chamille J. Lescott","orcid":null,"position":0,"is_corresponding":true}],"reference_count":67,"raw_metadata":null,"created_at":"2026-07-19T00:31:16.555318Z","pmid":null,"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":[]}