443919-83-3

Upstream product

• 120-21-8 4-Diethylaminobenzaldehyde 
• 443919-82-2 11-{2,5-bis[(diethoxyphosphoryl)methyl]-4-methoxyphenoxy}undecyl acetate 
• 1611-56-9 1-Bromo-11-hydroxyundecane 
• 150-76-5 4-methoxy-phenol 
• 56857-77-3 11-(4-Methoxyphenoxy)-1-undecanol 
• 443919-81-1 11-[2,5-bis(bromomethyl)-4-methoxyphenoxy]undecyl acetate 

Downstream Products

• 443919-84-4 4[(E)-2-(2-[(11-bromoundecyl)oxy]-4-{(E)-2-[4-(diethylamino)phenyl]ethenyl}-5-methoxyphenyl)ethenyl]-N,N-diethylaniline 

Relevant academic research and scientific papers

Five orders-of-magnitude enhancement of two-photon absorption for dyes on silver nanoparticle fractal clusters

Strong enhancement of the two-photon absorption of organic molecules near silver nanoparticle fractal clusters has been observed and has been exploited to yield composite materials with very strong two-photon absorption and two-photon-excited fluorescence properties. Measurements on cluster films coated with chromophoric polymer or with thiol-bound chromophores give spatially-averaged enhancements of 1000 and 20000, respectively. Two-photon fluorescence microscopy studies show that the enhancements are spatially inhomogeneous, with peak-enhancement factors of a?￥ 10000 (polymer/cluster) and a?￥ 160000 (thiol chromophore/cluster), and excitation frequency dependent. These results are in accord with theoretical predictions of local-field effects due to strong localization of collective plasmon modes in fractal metal clusters, and demonstrate an approach to ultrasensitive two-photon processes.