000148121 001__ 148121
000148121 005__ 20250210083428.0
000148121 0247_ $$2doi$$a10.1016/j.dyepig.2025.112641
000148121 0248_ $$2sideral$$a141562
000148121 037__ $$aART-2025-141562
000148121 041__ $$aeng
000148121 100__ $$aMelendo, Irene
000148121 245__ $$aSizing-up the aromatic system of a Cyclometalated n-Heterocyclic Carbene in a luminescent platinum-based sensor to xanthine
000148121 260__ $$c2025
000148121 5060_ $$aAccess copy available to the general public$$fUnrestricted
000148121 5203_ $$aA cyclometalated N-heterocyclic carbene platinum(II) complex comprising a phenanthrenyl moiety has been prepared and used to synthesize neutral and cationic luminescent complexes containing different ancillary ligands: [Pt(PhenˆC*)(acac)] (5), [Pt(PhenˆC*)(CNXyl)2]PF6 (6) and [Pt(PhenˆC*)(PˆP)]PF6 (PˆP: 1,1-bis(diphenylphosphino)methane, dppm 7; 1,2-bis(diphenylphosphino)ethane, dppe, 8, 1,2-bis(diphenylphosphino)benzene, dppbz, 9). Structural characterization by NMR and single-crystal X-ray studies endorsed the proposed molecular structure for these complexes with the formation of a six-membered platinacycle. Photophysical and computational studies for 5-9 disclosed the ligand-centered nature of the triplet state, mainly governed by the extended aromatic system of the PhenˆC* ligand. Immobilized in ethyl cellulose (EC) films, compound 5 shows elevated quantum yield and long decay times in argon atmosphere and high sensitivity to molecular oxygen. Blends of 5 and EC (C5) were tested as a luminescent oxygen probe for the determination of xanthine (Xn), showing good photo stability and reversibility. The RSD is 0.9% (n=3) for 3·10-4 M and the detection limit achieves values of ∼ 2·10-5 M. This platinum-based sensor delivers better results than the ones obtained with [Ru(bpy)3]Cl2·6 H2O, a typical luminophore used in commercial oxygen sensors. To improve the feasibility of the Xn determination, the sensor was implemented in a smartphone adapted device to be used as a in-situ Xn control.
000148121 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E17-23R$$9info:eu-repo/grantAgreement/ES/DGA/E25-23R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-122869NB-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PID2022-139235OB-I00
000148121 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000148121 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000148121 700__ $$0(orcid)0000-0003-1654-3803$$aCamacho-Aguayo, Javier$$uUniversidad de Zaragoza
000148121 700__ $$0(orcid)0000-0003-1812-3175$$aFuertes, Sara
000148121 700__ $$0(orcid)0000-0002-4808-574X$$aMartín, Antonio
000148121 700__ $$0(orcid)0000-0002-7902-6005$$aMarcos, Susana de$$uUniversidad de Zaragoza
000148121 700__ $$0(orcid)0000-0002-8973-5104$$aGalbán, Javier$$uUniversidad de Zaragoza
000148121 700__ $$0(orcid)0000-0002-0257-0483$$aSicilia, Violeta$$uUniversidad de Zaragoza
000148121 7102_ $$12010$$2760$$aUniversidad de Zaragoza$$bDpto. Química Inorgánica$$cÁrea Química Inorgánica
000148121 7102_ $$12009$$2750$$aUniversidad de Zaragoza$$bDpto. Química Analítica$$cÁrea Química Analítica
000148121 773__ $$g235 (2025), 112641 [36 pp.]$$pDyes pigm.$$tDyes and Pigments$$x0143-7208
000148121 8564_ $$s1007659$$uhttps://zaguan.unizar.es/record/148121/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-01-09
000148121 8564_ $$s1058489$$uhttps://zaguan.unizar.es/record/148121/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-01-09
000148121 909CO $$ooai:zaguan.unizar.es:148121$$particulos$$pdriver
000148121 951__ $$a2025-02-10-08:31:25
000148121 980__ $$aARTICLE