{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T07:57:20Z","timestamp":1790927840261,"version":"4.1.0"},"reference-count":48,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T00:00:00Z","timestamp":1790899200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T00:00:00Z","timestamp":1790899200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    With its potential to surpass the Shockley\u2013Queisser limit, triplet\u2010triplet annihilation upconversion (TTA\u2010UC) has been heralded as a powerful solution in direct solar\u2010to\u2010fuel energy conversion. TTA\u2010UC combines low\u2010energy photons to generate high\u2010energy states for photocatalysis. TTA\u2010UC requires a triplet photosensitizer (PS), commonly a precious\u2010metal complex, whose structurally rigid MLCT state facilitates intersystem crossing (ISC). However, these metals are costly, toxic, and have low extinction coefficients relative to organic PSs, while organic PSs have limited ISC efficiencies. Taking a bioinspired approach, we combine a light\u2010harvesting organic chromophore with a structurally switchable earth\u2010abundant transition metal. Characterizing the ground and excited state properties of this construct, its metal\u2010free analog, and a version incapable of conformational switching, we show that both the metal ion and its conformational switching are crucial for enhanced photostability, ISC, and energy transfer during TTA\u2010UC. Ultimately, we increase upconversion quantum yields from 6.6% to 12.1% at low threshold power density (0.037\u00a0W\/cm\n                    <jats:sup>2<\/jats:sup>\n                    ), and double photocatalysis yields relative to the chromophore alone. These results unveil a new approach in PS design using conformational gating to amplify photocatalysis.\n                  <\/jats:p>","DOI":"10.1002\/anie.6218520","type":"journal-article","created":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T07:45:13Z","timestamp":1790927113000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Conformationally Switchable Copper(I) Complexes Amplify BODIPY Triplet Photosensitization"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0920-0255","authenticated-orcid":false,"given":"Nisha","family":"Kamboj","sequence":"first","affiliation":[{"name":"Department of Chemistry University of Illinois Urbana\u2010Champaign  Illinois USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Annabella","family":"DeBernardo","sequence":"additional","affiliation":[{"name":"Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois Urbana\u2010Champaign  Illinois USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Margaret G.","family":"Lekan","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Illinois Urbana\u2010Champaign  Illinois USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1470-1903","authenticated-orcid":false,"given":"Nicholas E.","family":"Jackson","sequence":"additional","affiliation":[{"name":"Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois Urbana\u2010Champaign  Illinois USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1076-9318","authenticated-orcid":false,"given":"Lisa","family":"Olshansky","sequence":"additional","affiliation":[{"name":"Department of Chemistry Center For Biophysics and Quantitative Biology Beckman Institute for Advanced Science and Technology Frederick Seitz Materials Research Laboratory Department of Chemical and Biomolecular Engineering University of Illinois Urbana\u2010Champaign  Illinois USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,2]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.abc5401"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3QM00069A"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41570\u2010024\u201000585\u20103"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.accounts.2c00307"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3CS00453H"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c15902"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1039\/D1SC00732G"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0CS00257G"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.5b00907"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.6c00533"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.4c18603"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.energyfuels.1c02130"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.trechm.2024.04.010"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41570\u2010024\u201000646\u20107"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.2c02580"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.3c05935"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpca.3c04269"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.5b00992"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2DT00312K"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3DT01213A"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcc.7b10466"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja1070366"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4MA00117F"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1039\/C5CS00364D"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1039\/C7SC01703K"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2OB01775J"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsenergylett.0c01150"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic301393e"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.1c02745"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.oprd.3c00167"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.202300239"},{"key":"e_1_2_8_33_1","doi-asserted-by":"publisher","DOI":"10.1039\/C6CC05867A"},{"key":"e_1_2_8_34_1","doi-asserted-by":"publisher","DOI":"10.1021\/ma502044f"},{"key":"e_1_2_8_35_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.5c00694"},{"key":"e_1_2_8_36_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010023\u201036679\u20107"},{"key":"e_1_2_8_37_1","doi-asserted-by":"publisher","DOI":"10.1039\/b507196h"},{"key":"e_1_2_8_38_1","doi-asserted-by":"publisher","DOI":"10.1039\/C9SC00696F"},{"key":"e_1_2_8_39_1","doi-asserted-by":"publisher","DOI":"10.1039\/c003789c"},{"key":"e_1_2_8_40_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic302210b"},{"key":"e_1_2_8_41_1","doi-asserted-by":"publisher","DOI":"10.1039\/C7DT04803C"},{"key":"e_1_2_8_42_1","doi-asserted-by":"publisher","DOI":"10.1002\/cptc.202300073"},{"key":"e_1_2_8_43_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.7b00551"},{"key":"e_1_2_8_44_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202003251"},{"key":"e_1_2_8_45_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2QI00353H"},{"key":"e_1_2_8_46_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202202238"},{"key":"e_1_2_8_47_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8CC07592A"},{"key":"e_1_2_8_48_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.3c03832"},{"key":"e_1_2_8_49_1","doi-asserted-by":"publisher","DOI":"10.1039\/D1SC01662H"}],"container-title":["Angewandte 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