{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,12]],"date-time":"2026-07-12T06:10:27Z","timestamp":1783836627339,"version":"3.55.0"},"reference-count":72,"publisher":"Wiley","issue":"16","license":[{"start":{"date-parts":[[2026,2,15]],"date-time":"2026-02-15T00:00:00Z","timestamp":1771113600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,2,15]],"date-time":"2026-02-15T00:00:00Z","timestamp":1771113600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2026,4,25]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    We studied the intersystem crossing (ISC) of neutral, monoanion, and dianion of a series of phenyl, pyrazole, and triazole fused perylene bisimides (PBI) derivatives. The neutral compounds exhibit high fluorescence quantum yields (\n                    <jats:italic>\u03a6<\/jats:italic>\n                    <jats:sub>F<\/jats:sub>\n                    = 66.5%\u221291.9%) and low singlet oxygen quantum yields (\n                    <jats:italic>\u03a6<\/jats:italic>\n                    <jats:sub>\u0394<\/jats:sub>\n                    &lt; 7.8%), with no triplet state signals detected via femtosecond transient absorption (fs\u2010TA) or nanosecond transient absorption (ns\u2010TA) spectral measurements. Time\u2010resolved electron paramagnetic resonance (TREPR) revealed an\n                    <jats:italic>e,e,e,a,a,a<\/jats:italic>\n                    electron spin polarization (ESP) for the T\n                    <jats:sub>1<\/jats:sub>\n                    state of these PBIs. Calculations of spin\u2010orbit coupling matrix elements (SOCMEs) and\n                    <jats:italic>g<\/jats:italic>\n                    \u2010tensor anisotropy both confirm the weak spin\u2010orbit coupling (SOC) of the molecules, accounting for their low ISC efficiency. Pulse electron paramagnetic resonance (pulse EPR) measurements of radical anions showed that PBI derivatives lacking pyrazole\/triazole moieties have much longer transverse relaxation times (\n                    <jats:italic>T<\/jats:italic>\n                    <jats:sub>m<\/jats:sub>\n                    = 2.5\u22122.6 \u00b5s) than the other compounds. Additionally, ns\u2010TA spectra confirmed ISC in PBI dianions, which possess long\u2010lived triplet states (213\u2212558 \u00b5s). These species can be used as super strong reductants in photocatalytic redox organic reactions.\n                  <\/jats:p>","DOI":"10.1002\/chem.70788","type":"journal-article","created":{"date-parts":[[2026,2,15]],"date-time":"2026-02-15T08:32:52Z","timestamp":1771144372000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Pyrazole and Triazole Fused Perylene Bisimides: Synthesis and Photophysical Properties"],"prefix":"10.1002","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-6770-2308","authenticated-orcid":false,"given":"Wenshu","family":"Feng","sequence":"first","affiliation":[{"name":"State Key Laboratory of Fine Chemicals Frontier Science Center for Smart Materials School of Chemical Engineering Dalian University of Technology  Dalian P.R. China"},{"name":"School of Chemistry Dalian University of Technology  Dalian P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrey A.","family":"Sukhanov","sequence":"additional","affiliation":[{"name":"Zavoisky Physical\u2010Technical Institute FRC Kazan Scientific Center of Russian Academy of Sciences  Kazan Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xue","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Fine Chemicals Frontier Science Center for Smart Materials School of Chemical Engineering Dalian University of Technology  Dalian P.R. 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6883-3306","authenticated-orcid":false,"given":"Violeta K.","family":"Voronkova","sequence":"additional","affiliation":[{"name":"Zavoisky Physical\u2010Technical Institute FRC Kazan Scientific Center of Russian Academy of Sciences  Kazan Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6596-7031","authenticated-orcid":false,"given":"Mariangela Di","family":"Donato","sequence":"additional","affiliation":[{"name":"LENS (European Laboratory for Non\u2010Linear Spectroscopy)  Firenze Italy"},{"name":"Institute of Chemistry of Organometallic Compounds (ICCOM)\u2010CNR  Sesto Fiorentino (FI) Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,2,15]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202301506"},{"key":"e_1_2_7_3_1","article-title":"BOPHY Derivatives as Phototherapeutic Agents for the Photodynamic Inactivation of Microorganisms","volume":"8","author":"Hern\u00e1ndez C. 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