{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T06:06:09Z","timestamp":1790143569183,"version":"4.0.1"},"reference-count":61,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2021,11,14]],"date-time":"2021-11-14T00:00:00Z","timestamp":1636848000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006769","name":"Russian Science Foundation","doi-asserted-by":"publisher","award":["19-73-20262"],"award-info":[{"award-number":["19-73-20262"]}],"id":[{"id":"10.13039\/501100006769","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>A series of emissive Cu(I) cationic complexes with 3-(2-pyridyl)-5-phenyl-pyrazole and various phosphines: dppbz (1), Xantphos (2), DPEPhos (3), PPh3 (4), and BINAP (5) were designed and characterized. Complexes obtained exhibit bright yellow-green emission (ca. 520\u2013650 nm) in the solid state with a wide range of QYs (1\u201378%) and lifetimes (19\u2013119 \u00b5s) at 298 K. The photoluminescence efficiency dramatically depends on the phosphine ligand type. The theoretical calculations of buried volumes and excited states explained the emission behavior for 1\u20135 as well as their lifetimes. The bulky and rigid phosphines promote emission efficiency through the stabilization of singlet and triplet excited states.<\/jats:p>","DOI":"10.3390\/molecules26226869","type":"journal-article","created":{"date-parts":[[2021,11,14]],"date-time":"2021-11-14T20:51:53Z","timestamp":1636923113000},"page":"6869","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Mononuclear Copper(I) 3-(2-pyridyl)pyrazole Complexes: The Crucial Role of Phosphine on Photoluminescence"],"prefix":"10.3390","volume":"26","author":[{"given":"Kristina F.","family":"Baranova","sequence":"first","affiliation":[{"name":"A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str., 28, 119991 Moscow, Russia"},{"name":"Faculty of Chemistry, Lomonosov Moscow State University, 1\u20133 Leninskie Gory, 119991 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3685-5329","authenticated-orcid":false,"given":"Aleksei A.","family":"Titov","sequence":"additional","affiliation":[{"name":"A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str., 28, 119991 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexander F.","family":"Smol\u2019yakov","sequence":"additional","affiliation":[{"name":"A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str., 28, 119991 Moscow, Russia"},{"name":"Plekhanov Russian University of Economics, Stremyanny per. 36, 117997 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0266-4797","authenticated-orcid":false,"given":"Andrey Yu.","family":"Chernyadyev","sequence":"additional","affiliation":[{"name":"A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prosp. 31\/4, 199071 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7963-2806","authenticated-orcid":false,"given":"Oleg A.","family":"Filippov","sequence":"additional","affiliation":[{"name":"A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str., 28, 119991 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8057-3703","authenticated-orcid":false,"given":"Elena S.","family":"Shubina","sequence":"additional","affiliation":[{"name":"A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str., 28, 119991 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2059","DOI":"10.1039\/b815577a","article-title":"Pyrazoles and pyrazolides\u2014Flexible synthons in self-assembly","volume":"12","author":"Halcrow","year":"2009","journal-title":"Dalton Trans."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/bs.aihch.2018.02.001","article-title":"Recent Developments in the Chemistry of Pyrazoles","volume":"126","author":"Brown","year":"2018","journal-title":"Adv. Heterocycl. 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