70850-61-2Relevant academic research and scientific papers
Antifungal activity of styrylpyridinium compounds against Candida albicans
Vaitkien?, Simona,Kulie?ien?, Neringa,Sakalauskait?, Sandra,Bekere, Laura,Krasnova, Laura,Vigante, Brigita,Duburs, Gunars,Daugelavi?ius, Rimantas
, p. 253 - 265 (2021)
We synthesized a set of 13 new and earlier described styrylpyridinium compounds (N-alkyl styrylpyridinium salts with bromide or tosylate anions) in order to evaluate antifungal activity against C.?albicans cells, to assay the possible synergism with fluco
An efficient conversion of alcohols to alkyl bromides using pyridinium based ionic liquids: A green alternative to appel reaction
Das, Pranab J.,Das, Jupitara,Das, Dimpee
, p. 651 - 654 (2018/02/09)
Pyridinium based ionic liquids namely 4-alkylpyridinium bromides were prepared and used for the conversion of alcohols to alkyl bromides in the presence of p-toluenesulphonic acid in the absence of volatile organic compounds. This solvent free procedure promises to be a much improved and environmentally benign alternative to the Appel reaction.
Heparin triggered dose dependent multi-color emission switching in water: a convenient protocol for heparinase I estimation in real-life biological fluids
Dey, Nilanjan,Samanta, Suman K.,Bhattacharya, Santanu
supporting information, p. 1486 - 1489 (2017/02/05)
Oligo(p-phenylenevinylene) based bis-pyridinium derivatives show ‘ratiometric’ detection of heparin in water. For the first time, we present a dose-dependent, multi-color emission switching in the presence of heparin. The reversible self-assembly of probe
Selective O-methylation of phenols and benzyl alcohols in simple pyridinium based ionic liquids
Das, Pranab Jyoti,Das, Jupitara
, p. 94 - 98 (2015/06/08)
Synthesis of pyridinium based ionic liquids were reported and applied as catalyst for the selective O-methylation of phenols and benzyl alcohols. The reactions were carried out by using dimethylcarbonate (DMC) as the methylating agent. High selectivity, high yield and recyclability of the ionic liquids are important features of the reactions.
Aggregation induced emission switching and electrical properties of chain length dependent π-gels derived from phenylenedivinylene bis-pyridinium salts in alcohol-water mixtures
Samanta, Suman K.,Bhattacharya, Santanu
supporting information, p. 25277 - 25287 (2013/01/16)
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
Unusual salt-induced color modulation through aggregation-induced emission switching of a bis-cationic phenylenedivinylene-based π hydrogelator
Bhattacharya, Santanu,Samanta, Suman K.
, p. 16632 - 16641 (2013/03/28)
The synthesis, hydrogelation, and aggregation-induced emission switching of the phenylenedivinylene bis-N-octyl pyridinium salt is described. Hydrogelation occurs as a consequence of π-stacking, van der Waals, and electrostatic interactions that lead to a
Physicochemical properties of hydrophobic ionic liquids containing 1-octylpyridinium, 1-octyl-2-methylpyridinium, or 1-octyl-4-methylpyridinium cations
Papaiconomou, Nicolas,Salminen, Justin,Lee, Jong-Min,Prausnitz, John M.
, p. 833 - 840 (2008/03/11)
This paper reports the synthesis of some ionic liquids containing cations 1-octylpyridinium [OPYR]+, 1-octyl-2-methylpyridinium [2MOPYR] +, or 1-octyl-4-metnylpyridinium [4MOPYR]+ and anions dicyanamide [N(CN)2]-, bis(trifluoromethylsulfonyl)imide [Tf2N]-, bis(pentafluoroethylsulfonyl)imide [BETI] -, trifluoromethyl sulfonate [TfO]-, nonafluorobutyl sulfonate [NfO]-, tetrafluoroborate [BF4]-, trifluorophenylborate [BF3PH]-, tetraphenylborate [BPh4] or hexafluoroarsenate [AsF6]-. Melting points, decomposition temperatures, densities, mutual solubilities with water, and viscosities have been measured. Unlike similar ionic liquids containing imidazolium cations, pyridinium ionic liquids studied here are nearly immiscible with water. Viscosities are similar, and water contents are slightly lower than those for ionic liquids containing imidazolium cations.
Dye-surfactant interaction: Role of an alkyl chain in the localization of styrylpyridinium dyes in a hydrophobic force field of a cationic surfactant (CTAB)
Mishra, Amaresh,Patel, Sanjukta,Behera, Rajani K.,Mishra, Bijaya K.,Behera, Gopa B.
, p. 2913 - 2918 (2007/10/03)
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.
