{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T01:54:33Z","timestamp":1784080473928,"version":"3.55.0"},"reference-count":31,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2023,5,11]],"date-time":"2023-05-11T00:00:00Z","timestamp":1683763200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Luminescent N-heterocyclic carbene chloride copper (I) complexes incorporating pyrene chromophore (1-Pyrenyl-NHC-R)-Cu-Cl, (3, 4) have been prepared and fully characterized. Two complexes were prepared with R = methyl (3) and R = naphthyl groups (4) at the nitrogen center of the carbene unit to tune their electronic properties. The molecular structures of 3 and 4 have been elucidated by X-ray diffraction and confirm the formation of the target compounds. Preliminary results reveal that all compounds including the imidazole-pyrenyl ligand 1 are emissive in the blue region at room temperature in solution and in solid-state. All complexes display quantum yields comparable or higher when compared to the parent pyrene molecule. Interestingly replacement of the methyl by naphthyl group increases the quantum yield by almost two-folds. These compounds might show promise for applications as optical displays.<\/jats:p>","DOI":"10.3390\/molecules28104025","type":"journal-article","created":{"date-parts":[[2023,5,12]],"date-time":"2023-05-12T01:30:29Z","timestamp":1683855029000},"page":"4025","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["N-Heterocyclic Carbene Copper (I) Complexes Incorporating Pyrene Chromophore: Synthesis, Crystal Structure, and Luminescent Properties"],"prefix":"10.3390","volume":"28","author":[{"given":"Yaping","family":"Cheng","sequence":"first","affiliation":[{"name":"Institut Parisien de Chimie Mol\u00e9culaire (IPCM), UMR CNRS 8232, Sorbonne Universit\u00e9-Campus Pierre et Marie Curie, 4 Place Jussieu, CEDEX 05, 75252 Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4099-5423","authenticated-orcid":false,"given":"Geoffrey","family":"Gontard","sequence":"additional","affiliation":[{"name":"Institut Parisien de Chimie Mol\u00e9culaire (IPCM), UMR CNRS 8232, Sorbonne Universit\u00e9-Campus Pierre et Marie Curie, 4 Place Jussieu, CEDEX 05, 75252 Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abderrahim","family":"Khatyr","sequence":"additional","affiliation":[{"name":"Institut UTINAM, UMR CNRS 6213, Universit\u00e9 de Franche-Comt\u00e9, 16 Route de Gray, 25030 Besan\u00e7on, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5647-8084","authenticated-orcid":false,"given":"Michael","family":"Knorr","sequence":"additional","affiliation":[{"name":"Institut UTINAM, UMR CNRS 6213, Universit\u00e9 de Franche-Comt\u00e9, 16 Route de Gray, 25030 Besan\u00e7on, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6955-8406","authenticated-orcid":false,"given":"Hani","family":"Amouri","sequence":"additional","affiliation":[{"name":"Institut Parisien de Chimie Mol\u00e9culaire (IPCM), UMR CNRS 8232, Sorbonne Universit\u00e9-Campus Pierre et Marie Curie, 4 Place Jussieu, CEDEX 05, 75252 Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Huynh, H.V. 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