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Exploring the influence of Diels–Alder linker length on photothermal molecule release from gold nanorods

Authordc.contributor.authorVetterlein, Claudia 
Authordc.contributor.authorVásquez Salfate, Rodrigo 
Authordc.contributor.authorBolaños, Karen 
Authordc.contributor.authorAcosta, Gerardo A. 
Authordc.contributor.authorGuzman, Fanny 
Authordc.contributor.authorAlbericio, Fernando 
Authordc.contributor.authorCelis, Freddy 
Authordc.contributor.authorCampos, Marcelo 
Authordc.contributor.authorKogan Bocian, Marcelo 
Authordc.contributor.authorAraya, Eyleen 
Cita de ítemdc.identifier.citationColloids and Surfaces B: Biointerfaces, Volumen 166,
Abstractdc.description.abstract© 2018 Elsevier B.V. We studied the photothermal release of carboxyfluorescein (CF) linked to the gold surface of gold nanorods (GNRs) by two Diels–Alder adducts of different lengths (n = 4 and n = 9). The functionalized GNRs were irradiated with infrared light to produce photothermal release of CF by a retro-Diels–Alder reaction. The adducts were chemisorbed on the GNRs and the functionalized nanoparticles were characterized by UV–vis, DLS, zeta potential and Raman and surface-enhanced Raman spectroscopy (SERS). On the basis of the degree of nanoparticle functionalization and the SERS results, we inferred the orientation of CF on the surface of the gold nanoparticle. Moreover, we determined the photothermal release profiles of CF from the gold surface by laser irradiation. The release was faster for the longer linker (n = 9). SERS revealed that, for the shorter linker (n = 4), molecules are oriented perpendicularly with respect to the gold surface, thereby maintaining the CF far from
Publisherdc.publisherElsevier B.V.
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
Link to Licensedc.rights.uri
Sourcedc.sourceColloids and Surfaces B: Biointerfaces
Keywordsdc.subjectControlled release
Keywordsdc.subjectPhotothermal effect
Keywordsdc.subjectSpatial temporal release
Títulodc.titleExploring the influence of Diels–Alder linker length on photothermal molecule release from gold nanorods
Document typedc.typeArtículo de revista
Indexationuchile.indexArtículo de publicación SCOPUS

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Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile