000162880 001__ 162880
000162880 005__ 20251017144551.0
000162880 0247_ $$2doi$$a10.1039/d5tc02436f
000162880 0248_ $$2sideral$$a145441
000162880 037__ $$aART-2025-145441
000162880 041__ $$aeng
000162880 100__ $$0(orcid)0000-0002-5999-341X$$aArauzo, Ana$$uUniversidad de Zaragoza
000162880 245__ $$aMultifunctional Eu(III) and Sm(III) coordination polymers built with silane-bridged dicarboxylate ligand: structure, luminescence and magnetism
000162880 260__ $$c2025
000162880 5060_ $$aAccess copy available to the general public$$fUnrestricted
000162880 5203_ $$aThree novel coordination polymers – [LnLNO3(o-Phen)] (Ln: Eu(III) (1), Sm(III) (2)) and [Eu2L3EtOH(H2O)3]·1.5EtOH·H2O (3) – were synthesized by reacting the respective lanthanide nitrates with the organosilane dicarboxylic acid bis(p-carboxyphenyl)diphenylsilane (H2L) with or without o-phenanthroline (o-Phen) as coligand. The o-Phen-assisted route yielded isostructural one-dimensional coordination polymers (CP) 1 and 2, incorporating both ligands and the nitrate anion. These ribbon-like chains assemble into hydrogen-bonded 2D networks that further stack into 3D architectures through non-covalent interactions. In contrast the o-Phen-free conditions produced the 3D CP 3, based solely on H2L, with ethanol and water molecules retained in the lattice. All three architectures are highly dense, with free volumes of only 2.7% (1, 2) and 11.0% (3). Photophysical studies reveal an exceptional quantum yield of 67% for Eu-based complex 1 attributed to complete ligand-to-Eu energy transfer. In contrast, the Sm-based compound 2 achieves a modest 2% quantum yield, while compound 3 reaches 8%. Magnetic measurements confirm typical Van Vleck paramagnetism for Eu3+ in 1 and 3, with spin–orbit coupling constants of Λ = 379 and 352 cm−1, respectively. The magnetism of the Sm-based CP 2 is governed by its ground 6H5/2 and first excited 6H7/2 multiplets (Λ = 310 cm−1), and notably displays field-induced slow magnetic relaxation. Remarkably, Eu-based CP 1 affords exfoliation by sonication into nanometric flakes that retain a high quantum yield of 57% upon deposition, opening up exciting opportunities for surface-integrated sensing, photonic, and quantum applications.
000162880 536__ $$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S$$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/DGA/E12-23R$$9info:eu-repo/grantAgreement/ES/DGA/E17-23R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-122869NB-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PID2022-138492NB-I00
000162880 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es
000162880 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000162880 700__ $$aZaltariov, Mirela-Fernanda
000162880 700__ $$aBartolomé, Elena
000162880 700__ $$0(orcid)0000-0003-1812-3175$$aFuertes, Sara
000162880 700__ $$aTigoianu, Ionut-Radu
000162880 700__ $$aShova, Sergiu
000162880 700__ $$aCazacu, Maria
000162880 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000162880 773__ $$g13, 35 (2025), 18508-18522$$pJ. mater. chem. C$$tJOURNAL OF MATERIALS CHEMISTRY C$$x2050-7526
000162880 8564_ $$s2601119$$uhttps://zaguan.unizar.es/record/162880/files/texto_completo.pdf$$yVersión publicada
000162880 8564_ $$s2738223$$uhttps://zaguan.unizar.es/record/162880/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000162880 909CO $$ooai:zaguan.unizar.es:162880$$particulos$$pdriver
000162880 951__ $$a2025-10-17-14:11:42
000162880 980__ $$aARTICLE