217655-17-9

Upstream product

• 19780-79-1 2-hexyl-1-octanol 
• 877-88-3 3,5-dimethoxybenzyl bromide 
• 108957-75-1 diethyl 3,5-dimethoxybenzylphosphonate 
• 115007-16-4 7-(bromomethyl)tridecane 
• 217655-10-2 4-[bis(2-hexyloctyl)amino]benzaldehyde 
• 217655-15-7 {4-[(E)-2-(3,5-Dimethoxy-phenyl)-vinyl]-phenyl}-bis-(2-hexyl-octyl)-amine 

Relevant academic research and scientific papers

Bathochromic or hypsochromic effects via the extension of conjugation: A study of stilbenoid squaraines

In contrast to normal conjugated oligomers, the stilbenoid squaraines 3a-d do not show a convergence of VIS/NIR absorption due to the extension of conjugation; the observed bathochromic effect in the beginning of the series is followed by a hypsochromic e

Extended conjugation in stilbenylsquaraines

Unsymmetrical 1-aryl-3-stilbenylsquaraines 2a-e and 1,3-bis(stilbenyl)squaraines 3a-c were prepared by CC coupling reactions of the corresponding substituted arenes with derivatives of squaric acid (Schemes 2 and 3). Dialkylamino and alkoxy groups enhance the solubility of these dyes and enlarge the intramolecular charge transfer of these donor-acceptor-donor systems. The extended conjugation of the stilbene units - in comparison with arene building blocks - leads to significant bathochromic shifts in the Vis/NIR absorption spectra.