N-Heterocyclic Carbenes as Coordinating Linkers for Platinum Nanoparticles and Spin-Crossover Fe(II) Coordination Polymers in Hybrid Nanomaterials with Potential Applications in Neuromorphic Learning

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dc.contributor.advisorBaquero Velasco, Edwin Arley
dc.contributor.advisorTricard, Simon
dc.contributor.authorGalvis Sandoval, Daniel Esteban
dc.contributor.researchgroupEstado Sólido y Catálisis Ambiental
dc.contributor.researchgroupLaboratoire de Physique et Chimie des Nano-Objets (LPCNO)
dc.contributor.researchgroupInstitut National des Sciences Appliquées de Toulouse (INSA)
dc.date.accessioned2025-09-10T17:06:09Z
dc.date.available2025-09-10T17:06:09Z
dc.date.issued2025-08-19
dc.descriptionilustraciones a color, diagramas, fotografíasspa
dc.description.abstractInspirada en el funcionamiento de los sistemas nerviosos biológicos, la computación neuromórfica ofrece un enfoque prometedor para diseñar hardware más eficiente energéticamente y de alto rendimiento. En este contexto, los nanomateriales híbridos que integran nanopartículas metálicas con componentes moleculares capaces de imitar el comportamiento neuronal y sináptico se han convertido en candidatos atractivos. Esta tesis presenta la síntesis por autoensamblaje de materiales híbridos nanoestructurados compuestos por nanopartículas de platino ultrapequeñas (PtNPs, de 1,4 nm de tamaño, según se determinó mediante microscopía electrónica de transmisión) y polímeros de coordinación (PC) basados en Fe(II) que incorporan 4-amino-1,2,4-triazol (NH2-trz) o 4-amino-1,2,4-triazol y 1,3- dimetil-5- [(E)-(1,2,4-triazolimino)metil]-1H-imidazol-3-io tetrafluoroborato (compuesto 2) como ligandos. Los CP se caracterizaron mediante magnetometría de muestra vibrante (VSM), lo que confirmó su comportamiento de cruce de espín (SCO), y los materiales híbridos se examinaron minuciosamente mediante técnicas microscópicas, magnéticas y espectroscópicas. La conductividad eléctrica se analizó mediante microscopía de fuerza atómica conductiva (c-AFM). Cabe destacar que el orden de inclusión de los componentes influyó significativamente en la morfología y las propiedades electrónicas de los híbridos basados en NH2-trz, mientras que en los sistemas basados en el compuesto 2 solo se vieron afectadas las propiedades eléctricas. Estos resultados demuestran la naturaleza ajustable del comportamiento eléctrico en dichos híbridos, lo que ofrece información valiosa para el diseño de materiales multifuncionales para aplicaciones neuromórficas. (Texto tomado de la fuente)spa
dc.description.abstractInspired by the functioning of biological nervous systems, neuromorphic computing offers a promising approach to designing more energy-efficient and high-performance hardware. In this context, hybrid nanomaterials that integrate metallic nanoparticles with molecular components capable of mimicking neuronal and synaptic behavior have emerged as attractive candidates. This thesis presents the self- assembly synthesis of nanostructured hybrid materials composed of ultra-small platinum nanoparticles (PtNPs, 1.4 nm in size, as determined by transmission electron microscopy) and Fe(II)-based coordination polymers (CPs) incorporating either 4-amino-1,2,4-triazole (NH2-trz) or 4-amino-1,2,4-triazole and 1,3- dimethyl-5-[(E)-(1,2,4-triazolimino)methyl]-1H-imidazol-3-ium tetrafluoroborate salt (compound 2) as ligands. The CPs were characterized by vibrating sample magnetometry (VSM), confirming their spin- crossover (SCO) behavior, and the hybrid materials were thoroughly examined by microscopic, magnetic, and spectroscopic techniques. Electrical conductivity was probed using conductive atomic force microscopy (c-AFM). Notably, the inclusion order of components significantly influenced the morphology and electronic properties of the NH2-trz-based hybrids, whereas for the compound 2-based systems, only electrical properties were affected. These results demonstrate the tunable nature of electrical behavior in such hybrids, offering valuable insights for the design of multifunctional materials for neuromorphic applications.eng
dc.description.degreelevelMaestría
dc.description.degreenameMagister en Ciencias Química Investigación
dc.description.researchareaQuímica de materiales
dc.format.extent62 páginas
dc.format.mimetypeapplication/pdf
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/88697
dc.language.isoeng
dc.publisherUniversidad Nacional de Colombia
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotá
dc.publisher.facultyFacultad de Ciencias
dc.publisher.placeBogotá, Colombia
dc.publisher.programBogotá - Ciencias - Maestría en Ciencias - Química
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.rights.licenseReconocimiento 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.bneMateriales híbridosspa
dc.subject.bneMateriales nanoestructuradosspa
dc.subject.bneNanostructured materialseng
dc.subject.ddc540 - Química y ciencias afines
dc.subject.ddc620 - Ingeniería y operaciones afines
dc.subject.lembNanopartículasspa
dc.subject.lembNanoparticleseng
dc.subject.lembCompuestos de hierrospa
dc.subject.lembIron compoundseng
dc.subject.otherAutoensamblaje (Química)eng
dc.subject.otherSelf-assembly (Chemistry)spa
dc.subject.proposalNanoparticleseng
dc.subject.proposalSelf-assemblyeng
dc.subject.proposalSpin-crossovereng
dc.subject.proposalHybrid nanostructured materialseng
dc.subject.proposalNanopartículasspa
dc.subject.proposalAuto-ensamblajespa
dc.subject.proposalSpin-crossoverspa
dc.subject.proposalMateriales híbridos nanoestructuradosspa
dc.titleN-Heterocyclic Carbenes as Coordinating Linkers for Platinum Nanoparticles and Spin-Crossover Fe(II) Coordination Polymers in Hybrid Nanomaterials with Potential Applications in Neuromorphic Learningeng
dc.title.translatedCarbenos N-heterocíclicos como enlaces coordinadores para nanopartículas de platino y polímeros de coordinación Fe(II) con transición de espín en nanomateriales híbridos con aplicaciones potenciales en el aprendizaje neuromórficospa
dc.typeTrabajo de grado - Maestría
dc.type.coarhttp://purl.org/coar/resource_type/c_bdcc
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.contentText
dc.type.driverinfo:eu-repo/semantics/masterThesis
dc.type.redcolhttp://purl.org/redcol/resource_type/TM
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dcterms.audience.professionaldevelopmentInvestigadores
dcterms.audience.professionaldevelopmentEstudiantes
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