Synthesis and Optical Properties of a Novel Hybrid Nanosystem Based on Covalently Modified nSiO2 Nanoparticles with a Curcuminoid Molecule

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dc.contributor.authorParra-Muñoz, Nicole
dc.contributor.authorLópez-Monsalves, Valentina
dc.contributor.authorEspinoza-González, Rodrigo
dc.contributor.authorAravena, Daniel
dc.contributor.authorPizarro, Nancy
dc.contributor.authorSoler, Monica
dc.date.accessioned2024-07-09T19:02:03Z
dc.date.available2024-07-09T19:02:03Z
dc.date.issued2024-06
dc.descriptionIndexación: Scopus.
dc.description.abstractA new curcuminoid molecule (3) has been designed and synthesized, containing a central -(CH2)2-COOH chain at the α carbon of the keto-enol moiety in the structure. The carboxylic acid group is added to react with exposed amino groups on silica oxide nanoparticles (nSiO2), forming an amide bond to attach the curcuminoid moiety to the nSiO2 covalently. The Kaiser test quantifies the functionalization degree, yielding 222 μmol of curcuminoid per gram of nanoparticles. The synthesized hybrid nanosystem, nSiO2-NHCO-CCM, displays significant emission properties, with a maximum emission at 538 nm in dichloromethane, similar to curcuminoid 1 (without the central chain), which emits at 565 nm in the same solvent. Solvent-induced spectral effects on the absorption and emission bands of the new hybrid nanosystem are confirmed, similar to those observed for the free curcuminoid (1). The new nanosystem is evaluated in the presence of kerosene in water, showing an emission band at 525 nm as a detection response. The ability of nSiO2-NHCO-CCM to change its fluorescence when interacting with kerosene in water is notable, as it overcomes the limitation caused by the insolubility of free curcuminoid 1 in water, allowing for the exploitation of its properties when connected to the water-stable nanosystem for future detection studies.
dc.description.urihttps://www-scopus-com.recursosbiblioteca.unab.cl/record/display.uri?eid=2-s2.0-85197200919&origin=resultslist&sort=plf-f&src=s&nlo=&nlr=&nls=&sid=db41dc2dbb1a468594f6f9b09ff1ccd6&sot=aff&sdt=cl&cluster=scofreetoread%2c%22all%22%2ct&sl=61&s=AF-ID(%22Universidad+Andr%C3%A9s+Bello%22+60002636)+AND+SUBJAREA(MATE)&relpos=1&citeCnt=0&searchTerm=
dc.identifier.citationNanomaterials Open Access Volume 14, Issue 12 June 2024 Article number 1022
dc.identifier.doi10.3390/nano14121022
dc.identifier.issn20794991
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/58378
dc.language.isoen
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rights.licenseCC BY 4.0 ATTRIBUTION 4.0 INTERNATIONAL
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectcurcuminoids
dc.subjectgrafted SiO2 nanoparticles
dc.subjecthybrid nanosystem
dc.subjectphotophysical properties
dc.subjectsolvent effects
dc.titleSynthesis and Optical Properties of a Novel Hybrid Nanosystem Based on Covalently Modified nSiO2 Nanoparticles with a Curcuminoid Molecule
dc.typeArtículo
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