{"doi":"10.1039/d4sc02933j","title":"Out-of-equilibrium dynamics of a grid-like Fe( <scp>ii</scp> ) spin crossover dimer triggered by a two-photon excitation","abstract":"·2MeCN (HL = 3,5-bis{6-(2,2'-bipyridyl)}pyrazole). Optical transient absorption (OTA) spectroscopy in solution proves that the same dynamics take place under both one-photon excitation (OPE) and TPE. The results show the emergence of the photoinduced high spin state in less than 2 ps and with a lifetime of 147 ns. Time-resolved photocrystallography (TRXRD) reveals a single molecular reorganisation within the first 500 ps following TPE. Additionally, variable temperature single crystal X-ray diffraction (VTSCXRD) and magnetic susceptibility measurements confirm that the thermal transition is silenced by the solvent. While the results of the OTA and TRXRD utilising TPE are intriguing, the high pump fluencies required to excite enough metal centres to the high spin state may impair its practical application. Nonetheless, this study sheds light on the potential of TPE for the investigation of the out-of-equilibrium dynamics of SCO complexes.","journal":"Chemical Science","year":2024,"id":473719,"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":0.9531,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2024-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":956987,"name":"Krishnayan Basuroy","orcid":"0000-0003-4141-9265","position":1,"is_corresponding":false},{"id":957445,"name":"Joanne Wong","orcid":null,"position":2,"is_corresponding":false},{"id":398587,"name":"Serhiy Demeshko","orcid":null,"position":3,"is_corresponding":false},{"id":397231,"name":"Franc Meyer","orcid":"0000-0002-8613-7862","position":4,"is_corresponding":false},{"id":240869,"name":"In‐Sik Kim","orcid":"0000-0002-0258-6012","position":5,"is_corresponding":false},{"id":890372,"name":"Robert Henning","orcid":"0000-0003-4404-0189","position":6,"is_corresponding":false},{"id":1309642,"name":"Yannic U. Staechelin","orcid":"0000-0001-8588-9117","position":7,"is_corresponding":false},{"id":1309643,"name":"Holger Lange","orcid":"0000-0002-4236-2806","position":8,"is_corresponding":false},{"id":956988,"name":"Simone Techert","orcid":"0000-0002-7549-7651","position":9,"is_corresponding":false},{"id":956986,"name":"José de Jesús Velazquez-Garcia","orcid":"0000-0002-5036-2005","position":0,"is_corresponding":true}],"reference_count":70,"raw_metadata":null,"created_at":"2026-07-19T02:06:04.967429Z","pmid":"39183926","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":[]}