(79b) Light Extinction By Agglomerates of Gold Nanoparticles: A Plasmon Ruler for Sub-10 Nm Interparticle Distances
AIChE Annual Meeting
Monday, November 14, 2022 - 8:15am to 8:30am
Kelesidis, G. A., Goudeli, E., and Pratsinis, S. E. 2017. Morphology and mobility diameter of carbonaceous aerosols during agglomeration and surface growth. Carbon 121:527-535, doi.org/10.1016/j.carbon.2017.06.004.
Kelesidis, G. A., and Pratsinis, S. E. 2019. Soot light absorption and refractive index during agglomeration and surface growth. Proc. Combust. Inst. 37: 1177-1184, doi.org/10.1016/j.proci.2018.08.025.
Kelesidis, G. A., Gao, D., Starsich, F.H.L., and Pratsinis, S. E. 2022. Light Extinction by Agglomerates of Gold Nanoparticles: A Plasmon Ruler for Sub-10 nm Interparticle Distances. Anal. Chem. 94:5310-5316, doi.org/10.1021/acs.analchem.1c05145.
Figure 1. Au agglomerate Î»l as a function of normalized interparticle separation, s/dp, estimated by DDA using dimers of monodisperse (squares and inverse triangles) and bidisperse (circles) nanoparticles and DEM-derived 7- (diamonds) and 15-mers (triangles) of monodisperse NPs with dp = 20â50 (squares, circles, diamonds, and triangles) or 75 and 80 nm (inverse triangles) and s = 1â50 nm. A new plasmon ruler (solid line and shaded area) is derived by regressing the DDA-derived Î»l evolution.