RT journal article
T1 Polymer nanocomposites for plasmonics: In situ synthesis of gold nanoparticles after additive manufacturing
A1 Hernández Saz, Jesús
A1 Sanz de León, Alberto
A1 Mata Fernández, María de la
A1 Delgado González, Francisco Javier
A1 Herrera Collado, Miriam
A1 Molina Rubio, Sergio Ignacio
A1 Giocondo, Michele
A1 Di Cianni, Wera
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Additive manufacturing
K1 Gold nanoparticles
K1 Nanocomposites
K1 Optical properties
K1 Plasmonics
K1 Stereolithography
AB A series of nanocomposites containing gold nanoparticles (AuNPs) are prepared by stereolithography (SL) by simply adding a precursor (KAuCl4) to a photoresist. A thermal treatment is performed after manufacturing the nanocomposites, triggering the reduction of KAuCl4 into AuNPs in solid state. In this approach, the photopolymerization of the resin and the formation of the AuNPs occur independently, allowing the optimization of these two processes separately. Advanced electron microscopy analyses reveal the distribution, size and morphology of the AuNPs synthesized within the resin, showing the influence of the gold precursor concentration and different thermal treatments. The localized surface plasmon resonance (LSPR) of the AuNPs modifies the optical properties of the 3D-printed nanocomposites, yielding transparent yet colored materials even for concentrations as low as 0.1 wt% KAuCl4. This behavior can be modelled by the Mie theory, correlating the macroscopic properties of the nanocomposites with the individual AuNPs embedded in the resin. The possibility of tuning the LSPR of the AuNPs together with the ability of manufacturing 3D-structures with sub-millimeter precision by SL, paves the way for the design of advanced platforms for plasmonics, such as sensors for surface enhanced Raman spectroscopy
PB Elsevier
SN 0142-9418
YR 2022
FD 2022-11-10
LK http://hdl.handle.net/10498/29564
UL http://hdl.handle.net/10498/29564
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026