TY - JOUR
T1 - Surface Modification of Gold Nanostars Through the Changes on Gold Seed Concentrations
AU - Martinez Espinosa, Juan Carlos
AU - Yacaman, Miguel Jose
AU - Villa, German Plascencia
AU - Arellano, Victor Hugo Romero
AU - Raya, Ana Karen Zavala
N1 - Publisher Copyright:
© 2018 Materials Research Society.
PY - 2018
Y1 - 2018
N2 - Due to its excellent optical properties, gold nanomaterials with anisotropic morphology are playing an important role in biomedical applications, specifically in the use of Surface Enhanced Raman Spectroscopy (SERS) technique for biological assays. In this work, we verified the behavior of the star shape nanoparticle peaks obtained by chemical synthesis (precursor reactant: HAuCl4, cationic surfactant: CTAB) and whose peaks were formed from the different concentrations of gold seeds (55, 65, 75 and 85 ul) which were added to the total solution (5.275 ml). The shape and size of the nanoparticles was verified with a Hitachi S-5500 microscope with a BF & DF SEM/STEM detector, and for the diameter distribution (hydrodynamic) was carried out by the dynamic light distribution technique with a Malvern DLS system Zetasizer Nano ZS. Particle sizes (peak-to-peak considering) were obtained with variations from 107 to 166 nm. The results suggest adding 75 ul of gold seeds to obtain uniform nanostars with well defined peaks. These gold nano-stars could be applied for identification of specific membrane markers for the study of different types of cancer by the SERS technique.
AB - Due to its excellent optical properties, gold nanomaterials with anisotropic morphology are playing an important role in biomedical applications, specifically in the use of Surface Enhanced Raman Spectroscopy (SERS) technique for biological assays. In this work, we verified the behavior of the star shape nanoparticle peaks obtained by chemical synthesis (precursor reactant: HAuCl4, cationic surfactant: CTAB) and whose peaks were formed from the different concentrations of gold seeds (55, 65, 75 and 85 ul) which were added to the total solution (5.275 ml). The shape and size of the nanoparticles was verified with a Hitachi S-5500 microscope with a BF & DF SEM/STEM detector, and for the diameter distribution (hydrodynamic) was carried out by the dynamic light distribution technique with a Malvern DLS system Zetasizer Nano ZS. Particle sizes (peak-to-peak considering) were obtained with variations from 107 to 166 nm. The results suggest adding 75 ul of gold seeds to obtain uniform nanostars with well defined peaks. These gold nano-stars could be applied for identification of specific membrane markers for the study of different types of cancer by the SERS technique.
KW - chemical synthesis
KW - nanostructure
KW - optical properties
KW - scanning transmission electron microscopy (STEM)
UR - http://www.scopus.com/inward/record.url?scp=85051181254&partnerID=8YFLogxK
U2 - 10.1557/adv.2018.329
DO - 10.1557/adv.2018.329
M3 - Artículo
AN - SCOPUS:85051181254
SN - 2059-8521
VL - 3
SP - 2449
EP - 2454
JO - MRS Advances
JF - MRS Advances
IS - 41
ER -