{"doi":"10.54337/aau511959234","title":"Impact Of Local Structural Characteristics On Glass-formation In Metal-organic Frameworks","abstract":"PhD in glass-formation in metal-organic framework III 3) using 67 Zn-NMR revealed that the Zn tetrahedral units in crystalline ZIFs can be described as two discrete Zn coordination environments.However, the vitrified ZIF samples had a single Zn peak described by a continuous distribution of coupling constants, signifying that the Zn sites become disordered during glass formation.The chemical shift is also shifting to higher fields, signifying a change in the average bond length.By extension, it appears that the introduction of large moieties on organic ligands can be used to increase the lattice of ZIFs and attain a higher Tg The electron-donating effects on the organic ligand are likely to strengthen the metal-to-linker bond, causing a higher Tm.The importance of the inductive effects is further highlighted by the mixed metal node effects observed by substituting zinc with cobalt and copper, where Tm is decreased substantially by the addition of a small quantity of a second metal ion.V 3) 67 Zn-faststof-NMR-analyse af zinkholdige ZIF krystaller viste, at to separate zink koordinationsmiljøer eksisterer.Disse separate koordinationsmiljøer omdannes til et enkelt Zn signal beskrevet af en kontinuer fordeling af koblingskonstanter.Dette viser at Zn tetrahedralerne bliver mere uordnet under glasdannelse.Derudover aendres det kemiske skifte, hvilket indikerer en aendring i bindingslaengderne.Dermed vises der at introduktionen af funktionelle grupper som øger krystalgitter volumen og resulterer i en øgning af Tg.Elektrondonerende effekter af funktionelle grupper resulterer i en øgning i Tm ved at styrke koordinationsbindingerne mellem metalionerne og liganderne.Effekten af de induktive effekter er yderligere observeret ved substituering af zink for kobolt og kobber, hvor Tm reduceres ved introduktion af en lille maenge af et sekundaert metal.","journal":"VBN Forskningsportal (Aalborg Universitet)","year":2022,"id":314207,"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":0,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9469,"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":240795,"name":"Rasmus S. K. Madsen","orcid":"0000-0002-7072-7091","position":0,"is_corresponding":true}],"reference_count":187,"raw_metadata":null,"created_at":"2026-07-19T00:33:52.047924Z","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":[]}