117154-25-3

Upstream product

• 108-89-4 picoline 
• 100-10-7 4-dimethylamino-benzaldehyde 
• 112-82-3 hexadecanyl bromide 
• 2315-40-4 N-hexadecyl-4-methylpyridinium bromide 

Downstream Products

• 158562-31-3 (E)-N-hexadecyl-4-(2-(4-(dimethylamino)phenyl)ethylene)pyridinium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato)dysprosium(III) 
• 158595-45-0 (E)-N-hexadecyl-4-(2-(4-(dimethylamino)phenyl)ethylene)pyridinium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato)ytterbium(III) 
• 162521-62-2 (E)-N-hexadecyl-4-(2-(4-(dimethylamino)phenyl)ethylene)pyridinium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato)neodymium(III) 
• 284034-77-1 (E)-N-hexadecyl-N',N'-dimethylamino-stilbazolium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato) erbium(III) 

Relevant academic research and scientific papers

Reversal in solvatochromism in some novel styrylpyridinium dyes having a hydrophobic cleft

The influence of solvent polarity on the electronic transition of four different N-hexadecyl styrylpyridinium dyes has been investigated in 15 solvents. The ET(30) scale has been used to propose a quantitative approach towards the relative stab

Dye-surfactant interaction: Role of an alkyl chain in the localization of styrylpyridinium dyes in a hydrophobic force field of a cationic surfactant (CTAB)

The interaction of a number of cationic dyes (I) with a varying number of methylene groups (C(n)) in the alkyl chain attached to pyridyl nitrogen with a cationic surfactant (CTAB) assembly is reported. The binding constant of the dyes (Cs to C18) with the micelle have been calculated, and are found to increase with increasing carbon chain. A plot of the binding constant vs. the chain length shows a curve with a maximum for C16, which is attributed to a compatibility factor. From studies of the electronic and emission spectra it is proposed that a micelle has a hydrophobic force field and that the dyes are localized in various pockets of the field.

Oxidation of Styrylpyridinium Dyes by Permanganate Ion

The oxidation of N-alkyl substituted styrylpyridinium bromides in both KMnO4 and cetyltrimethylammonium permanganate (CTAP) results in the formation of corresponding substituted benzaldehydes. The oxidation in aqueous medium is catalyzed by acid whereas in chloroform medium the reaction proceeds at neutral condition. However, the reaction proceeds through the same mechanism in both the media. The faster rate of oxidation in aqueous medium by KMnO4 than that in chloroform medium by CTAP has been rationalized through hydrophobic effect. The overall rate equation can be represented as rate = k1.5-0.75 in aqueous medium and rate = k0.5-1 in chloroform medium. From the substituent effect a transition state with low electron density at the olefinic carbon has been proposed.