TY - JOUR
T1 - Synthesis of Colloidal Gold Nanorods with Plasmon Absorbance Wavelength in the Near Infrared Region
AU - Angelats-Silva, Luis M.
AU - Asmat-Campos, David
AU - León-León, Henry
AU - Wilkinson, Kevin A.
AU - Sánchez-Vaca, Daniel A.
AU - López-Milla, Alcides
N1 - Publisher Copyright:
Copyright © Materials Research Society 2016.
PY - 2016
Y1 - 2016
N2 - We report preparation and characterization of colloidal gold nanorods (AuNR) with plasmon absorbance over 950 nm and an aspect ratio of 7.2 by tuning silver nitrate concentration and the CTAB/BDAC ratio during growth. Samples were analyzed by scanning transmission electron microscopy, X-ray diffraction, UV-vis absorption spectroscopy and measurement of zeta potential. Addition of 170 μM silver nitrate to the CTAB-containing reaction mixture allowed preparation of AuNRs with a maximum absorbance peak at 941.8 nm and a yield around 96%. Optimization of the BDAC/CTAB ratio allowed for a further redshift of the absorbance maximum to 954.0 nm, but with poorer yields.
AB - We report preparation and characterization of colloidal gold nanorods (AuNR) with plasmon absorbance over 950 nm and an aspect ratio of 7.2 by tuning silver nitrate concentration and the CTAB/BDAC ratio during growth. Samples were analyzed by scanning transmission electron microscopy, X-ray diffraction, UV-vis absorption spectroscopy and measurement of zeta potential. Addition of 170 μM silver nitrate to the CTAB-containing reaction mixture allowed preparation of AuNRs with a maximum absorbance peak at 941.8 nm and a yield around 96%. Optimization of the BDAC/CTAB ratio allowed for a further redshift of the absorbance maximum to 954.0 nm, but with poorer yields.
KW - Au
KW - chemical synthesis
KW - colloid
UR - http://www.scopus.com/inward/record.url?scp=85041591989&partnerID=8YFLogxK
U2 - 10.1557/adv.2016.486
DO - 10.1557/adv.2016.486
M3 - Article
AN - SCOPUS:85041591989
VL - 1
SP - 2181
EP - 2186
JO - MRS Advances
JF - MRS Advances
IS - 30
ER -