000168243 001__ 168243
000168243 005__ 20260130124311.0
000168243 0247_ $$2doi$$a10.1021/acs.inorgchem.5c03110
000168243 0248_ $$2sideral$$a145143
000168243 037__ $$aART-2025-145143
000168243 041__ $$aeng
000168243 100__ $$aMelendo, Irene
000168243 245__ $$aDouble-Decker Platinum Complexes: From Visible to NIR-II Luminescence
000168243 260__ $$c2025
000168243 5060_ $$aAccess copy available to the general public$$fUnrestricted
000168243 5203_ $$aThe Pt(II) dinuclear compounds [{Pt(C^N)(μ-S^N)}2] [S^NH: 2-mercapto-1-methylimidazol; HC^N= 1-naphthalen-2-yl-1H-pyrazole (naph-pz, 2a); benzo[h]quinoline (bzq, 2b)] were obtained by reaction of the corresponding mononuclear precursor [Pt(C^N)Cl(S^NH)] (C^N: naph-pz 1a, bzq 1b) with NEt3. Then, 2a and 2b were reacted with aqueous HX (X: Cl, Br, I) in molar ratio 1:2 to give the corresponding oxidized derivatives [{Pt(C^N)(μ-S^N)X}2] (X = Cl 3a/b-Cl, Br 3a/b-Br, I 3a/b-I). Their X-ray structures showed shorter Pt–Pt distances in the Pt2(III) complexes (ca. 2.7 Å) than in the Pt2(II) ones (ca. 3.0 Å) in agreement with the existence of a Pt–Pt bond. The photophysical properties were studied experimentally and theoretically by DFT and TD-DFT. The Pt2(II) complexes exhibit an emission in the visible region (640 nm 2a, 685 nm 2b) of mostly excimeric 3ππ* and 3MMLCT [dσ*(Pt2) → π* (C^N)] character respectively, while the Pt2(III) complexes emit in the NIR-II region with maxima reaching up to 1215 nm. The 3XMMCT nature of these emissions justify the influence of both the axial ligand (X) and the overlap of the dz2 orbitals on their energies; the latter being affected by the nature of the C^N and the bridging ligand.
000168243 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E17-23R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-122869NB-I00
000168243 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000168243 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000168243 700__ $$0(orcid)0000-0001-9003-1051$$aBorja, Pilar
000168243 700__ $$0(orcid)0000-0003-1812-3175$$aFuertes, Sara
000168243 700__ $$0(orcid)0000-0002-4808-574X$$aMartín, Antonio
000168243 700__ $$0(orcid)0000-0002-0257-0483$$aSicilia, Violeta$$uUniversidad de Zaragoza
000168243 7102_ $$12010$$2760$$aUniversidad de Zaragoza$$bDpto. Química Inorgánica$$cÁrea Química Inorgánica
000168243 773__ $$g64, 34 (2025), 17523-17532$$pInorg. chem.$$tInorganic Chemistry$$x0020-1669
000168243 8564_ $$s3928589$$uhttps://zaguan.unizar.es/record/168243/files/texto_completo.pdf$$yVersión publicada
000168243 8564_ $$s2965408$$uhttps://zaguan.unizar.es/record/168243/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000168243 909CO $$ooai:zaguan.unizar.es:168243$$particulos$$pdriver
000168243 951__ $$a2026-01-30-12:20:32
000168243 980__ $$aARTICLE