{"doi":"10.1002/anie.201901546","title":"Utilizing d–pπ Bonds for Ultralong Organic Phosphorescence","abstract":"<jats:title>Abstract</jats:title><jats:p>Developing pure organic materials with ultralong lifetimes is attractive but challenging. Here we report a concise chemical approach to regulate the electronic configuration for phosphorescence enhancement. After the introduction of d–pπ bonds into a phenothiazine model system, a phosphorescence lifetime enhancement of up to 19 times was observed for DOPPMO, compared to the reference PPMO. A record phosphorescence lifetime of up to 876 ms was obtained in phosphorescent phenothiazine. Theoretical calculations and single‐crystal analysis reveal that the d–pπ bond not only reduces the (n, π*) proportion of the T<jats:sub>1</jats:sub> state, but also endows the rigid molecular environment with multiple intermolecular interactions, thus enabling long‐lived phosphorescence. This finding makes a valuable contribution to the prolongation of phosphorescence lifetimes and the extension of the scope of phosphorescent materials.</jats:p>","journal":"Angewandte Chemie International Edition","year":2019,"id":664639,"datarank":0.8041938248564139,"base_score":5.3612921657094255,"endowment":5.3612921657094255,"self_citation_contribution":0.8041938248564139,"citation_network_contribution":0.0,"self_endowment_contribution":0.8041938248564139,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":212,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":5,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1658554,"name":"Huili Ma","orcid":null,"position":1,"is_corresponding":false},{"id":913350,"name":"Xuan Wang","orcid":"0000-0002-6588-2951","position":2,"is_corresponding":false},{"id":1734472,"name":"Anqi Lv","orcid":null,"position":3,"is_corresponding":false},{"id":183873,"name":"Huifang Shi","orcid":null,"position":4,"is_corresponding":false},{"id":642111,"name":"Yun Geng","orcid":"0000-0002-2381-2373","position":5,"is_corresponding":false},{"id":642886,"name":"Jie Li","orcid":"0000-0002-5271-8263","position":6,"is_corresponding":false},{"id":1734473,"name":"Fushun Liang","orcid":"0000-0003-4195-3863","position":7,"is_corresponding":false},{"id":1734474,"name":"Zhong‐Min Su","orcid":"0000-0002-3342-1966","position":8,"is_corresponding":false},{"id":1734475,"name":"Zhongfu An","orcid":"0000-0002-6522-2654","position":9,"is_corresponding":false},{"id":687086,"name":"Wei Huang","orcid":"0009-0005-4519-910X","position":10,"is_corresponding":false},{"id":1734471,"name":"Shuai Tian","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Utilizing d–pπ Bonds for Ultralong Organic Phosphorescence","abstract":"<jats:title>Abstract</jats:title><jats:p>Developing pure organic materials with ultralong lifetimes is attractive but challenging. 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