2315-40-4

Upstream product

• 108-89-4 picoline 
• 112-82-3 hexadecanyl bromide 

Downstream Products

• 166267-25-0 (E)-N-hexadecyl-4-[2-(4-diethylaminophenyl)ethenyl]pyridinuim bromide 
• 118104-94-2 Br^(1-)*C₂₉H₄₄NO⁽¹⁺⁾ 
• 951315-77-8 Br^(1-)*C₂₉H₄₄N⁽¹⁺⁾ 
• 117154-25-3 (E)-N-n-hexadecyl-4-(2-(4-(dimethylamino)phenyl)ethenyl)pyridinium bromide 

Relevant academic research and scientific papers

Aggregation induced emission switching and electrical properties of chain length dependent π-gels derived from phenylenedivinylene bis-pyridinium salts in alcohol-water mixtures

Supramolecular π-gels were formed in a mixture of aliphatic alcohols and water for a series of chromophoric phenylenedivinylene bis-N-alkyl pyridinium salts (PPV) appended with terminal aliphatic hydrocarbon chains of different lengths. Gelation could be

Wide-Antimicrobial Spectrum of Picolinium Salts

Nosocomial infections, which greatly increase morbidity among hospitalized patients, together with growing antibiotic resistance still encourage many researchers to search for novel antimicrobial compounds. Picolinium salts with different lengths of alkyl chains (C12, C14, C16) were prepared by Menshutkin-like reaction and evaluated with respect to their biological activity, i.e., lipophilicity and critical micellar concentration. Picolinium salts with C14 and C16 side chains achieved similar or even better results when in terms of antimicrobial efficacy than benzalkoniums; notably, their fungicidal efficiency was substantially more potent. The position of the methyl substituent on the aromatic ring does not seem to affect antimicrobial activity, in contrast to the effect of length of the N-alkyl chain. Concurrently, picolinium salts exhibited satisfactory low cytotoxicity against mammalian cells, i.e., lower than that of benzalkonium compounds, which are considered as safe.

Ferrocene amphiphilic D-π-A dyes: Synthesis, redox behavior and determination of band gaps

We report the synthesis of a series of ferrocene amphiphilic donor-π-acceptor dyes, with the general formula (Fc-CHCH-HetNC16H33)+ X- [where: Fc behaves as the donor group, a double bond as the π bridge, and 2-,4-pyridinium and 4-quinolinium as the potent acceptor groups (2a-b and 4, X = Br- or BF4-)], in good overall yields. Together with their neutral counterparts (6a-b and 7), the photophysical and electrochemical properties of these compounds were investigated by means of UV-Vis spectroscopy and cyclic voltammetry. The optical and electrochemical band gaps of these dyes were calculated, which indicated that 4 has the lowest bandgap value. Time-dependent DFT calculations indicate that the lowest energy absorption band displayed for these compounds has mainly metal-to-ligand charge transfer character, with the HOMO-LUMO electronic transition being the main contribution.

β-CD assisted aqueous dissolution of cetylpicolinium dichromates (CPDC)—Evolution of a class of green water compatible lipopathic Cr(VI) oxidants

Water-insoluble lipopathic dichromates have been successfully solubilized in aqueous phase by the entrapment of their hydrophobic tails in β-cyclodextrin (β-CD) non-polar cavity. Aqueous solubility of α-, β-, and γ- cetylpicolinium dichromate (CPDC) molecules, synthesized in our lab, has been studied to find their suitability for Cr(VI) oxidation purposes in water medium. The analysis of phase solubility shows the existence of a Bs type curve and its significance has been fully deciphered through dynamic light scattering (DLS) analysis. The limiting concentration of β-CD up to which it can induce 1:1 host-guest complexation with the CPDC entities, has been determined and the stoichiometry has been confirmed from Job's plot. The binding constant and complexation efficiency of the β-CD-CPDC complexes have been determined and temperature effect on these parameters has been discussed through thermodynamic calculations. Analyses of viscosity variation of the aqueous solutions of the complexes have been done and correlated with the solubilization phenomenon.

Synthesis and mesophase behaviour of ionic liquid crystals

N-Alkyl-pyridinium derivatives 1-3 and N-alkyl-stilbazolium halides 4-6 with hydroxy, methoxy and hydrogen 4′-substituents and long non-branched alkyl chains (n = 14, 16, 18, 20, 22) were synthesized and characterized by polarizing microscopy, differentia

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.

Langmuir-Blodgett film and second harmonic generation of a new type of amphiphilic non-linear optical bis-chromophore complex dye

A bivalent zinc complex anion: bis(2-thione-1,3-dithiol-4,5-dimercapto)zinc, has been chosen to balance several non-linear optical (NLO) dye cations in the design and synthesis of a series of novel bis-chromophore complex dyes. The Langmuir film-forming properties of these new NLO complex dyes at the air/water interface, the stability and second-order non-linear optical properties of the monolayer and Langmuir-Blodgett multilayer films were investigated. Results show that both the film-forming properties and NLO coefficiencies were improved greatly when the zinc complex anion was incorporated into four types of NLO-active organic dyes.

Studies on Cyanine Dyes: Evaluation of Area/Molecule, Surface Potential and Rate Constants for KMnO4 Oxidation in Two Dimensions

The limiting area/molecule and change in surface potential (ΔV) values of some synthesised surface active cyanine dyes (1 a-e) have been obtained.The results have been interpreted in terms of possible orientation of the molecules at the air/water interfac

Determination of Dissociation Constants of Salicylidene-2-aminobenzothiazole and p-Hydroxybenzylidene-2-aminobenzothiazole in Different Surfactant Systems

The critical micellar concentrations of a number of nonionic surfactants have been determined by dye incorporation method.The pK of salicylidene-2-aminobenzothiazole and p-hydroxybenzylidene-2-aminobenzothiazole have been determined in different surfactan