Synthesis, Stereochemistry and Biological Activity of Some Novel Long Alkyl Chain Substituted Thiazolidin-4-ones and Thiazan-4-one from 10-Undecenoic Acid Hydrazide.

A polypyridyl ligand functionalized with a long alkyl chain (LC10) was prepared. Reaction of LC10 with selected iron salts of different stoichiometries formed two metal complexes: [Fe(LC10)(Cl)3] (1) and [Fe(LC10)2](ClO4)3...

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Template mediated crystal engineering

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010017013x ◽

1994 ◽

Vol 52 ◽

pp. 480-481

Author(s):

Brigid R. Heywood ◽

S. Champ

Keyword(s):

Crystal Engineering ◽

Electrostatic Interactions ◽

Alkyl Chain ◽

Crystallographic Axis ◽

Two Dimensional ◽

Engineering Process ◽

Solution Interface ◽

Extensive Program ◽

Geometric Homology ◽

Long Alkyl Chain

Recent work on the crystallisation of inorganic crystals under compressed monomolecular surfactant films has shown that two dimensional templates can be used to promote the oriented nucleation of solids. When a suitable long alkyl chain surfactant is cast on the crystallisation media a monodispersied population of crystals forms exclusively at the monolayer/solution interface. Each crystal is aligned with a specific crystallographic axis perpendicular to the plane of the monolayer suggesting that nucleation is facilitated by recognition events between the nascent inorganic solid and the organic template.For example, monolayers of the long alkyl chain surfactant, stearic acid will promote the oriented nucleation of the calcium carbonate polymorph, calcite, on the (100) face, whereas compressed monolayers of n-eicosyl sulphate will induce calcite nucleation on the (001) face, (Figure 1 & 2). An extensive program of research has confirmed the general principle that molecular recognition events at the interface (including electrostatic interactions, geometric homology, stereochemical complementarity) can be used to promote the crystal engineering process.

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Synthesis and modification of maleic anhydride-vinyl acetate copolymer by a long alkyl chain alcohol for cold flow impovers of biodiesel

Vietnam Journal of Science Technology and Engineering ◽

10.31276/vjste.60(3).03 ◽

2018 ◽

Vol 60 (3) ◽

pp. 3-8

Author(s):

Thi Thu Huong Tran ◽

Thi Tuyet Mai Phan ◽

Van Boi Luu ◽

Ngoc Lan Pham ◽

Keyword(s):

Maleic Anhydride ◽

Vinyl Acetate ◽

Alkyl Chain ◽

Chain Alcohol ◽

Cold Flow ◽

Acetate Copolymer ◽

Long Alkyl Chain

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X-ray Crystallographic Study of Alkylammonium Anthracene-9-carboxylates as a Model for Fibrous Structure of Binary Anthracene Salt Gels

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc20041292 ◽

2004 ◽

Vol 69 (6) ◽

pp. 1292-1300 ◽

Cited By ~ 1

Author(s):

Tahahiro Tani ◽

Kazuki Sada ◽

Masatsugu Ayabe ◽

Yuya Iwashita ◽

Takanori Kishida ◽

...

Keyword(s):

Alkyl Chain ◽

Columnar Structure ◽

Hydrogen Bond Network ◽

One Dimensional ◽

X Ray ◽

Crystallographic Study ◽

Alkylammonium Salts ◽

Bond Network ◽

Fibrous Assemblies ◽

Long Alkyl Chain

Crystal structure of hexylammonium anthracene-9-carboxylate was investigated. The salt was arranged by a one-dimensional hydrogen bond network to form a columnar structure in the crystalline state. This columnar structure should be the model of fibrous assemblies in the organogels of anthracene-9-carboxylate alkylammonium salts having a long alkyl chain.

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Silver Nanoparticles Stabilized with Phosphorus-Containing Heterocyclic Surfactants: Synthesis, Physico-Chemical Properties, and Biological Activity Determination

Nanomaterials ◽

10.3390/nano11081883 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1883

Author(s):

Martin Pisárčik ◽

Miloš Lukáč ◽

Josef Jampílek ◽

František Bilka ◽

Andrea Bilková ◽

...

Keyword(s):

Silver Nanoparticles ◽

Biological Activity ◽

Zeta Potential ◽

Chain Length ◽

Alkyl Chain ◽

Chemical Properties ◽

Alkyl Chain Length ◽

Microbial Pathogens ◽

Physico Chemical ◽

Phosphorus Containing

Phosphorus-containing heterocyclic cationic surfactants alkyldimethylphenylphospholium bromides with the alkyl chain length 14 to 18 carbon atoms were used for the stabilization of silver nanodispersions. Zeta potential of silver nanodispersions ranges from +35 to +70 mV, which indicates the formation of stable silver nanoparticles (AgNPs). Long-chain heptadecyl and octadecyl homologs of the surfactants series provided the most intensive stabilizing effect to AgNPs, resulting in high positive zeta potential values and smaller diameter of AgNPs in the range 50–60 nm. A comparison with non-heterocyclic alkyltrimethylphosphonium surfactants of the same alkyl chain length showed better stability and more positive zeta potential values for silver nanodispersions stabilized with heterocyclic phospholium surfactants. Investigations of biological activity of phospholium-capped AgNPs are represented by the studies of antimicrobial activity and cytotoxicity. While cytotoxicity results revealed an increased level of HepG2 cell growth inhibition as compared with the cytotoxicity level of silver-free surfactant solutions, no enhanced antimicrobial action of phospholium-capped AgNPs against microbial pathogens was observed. The comparison of cytotoxicity of AgNPs stabilized with various non-heterocyclic ammonium and phosphonium surfactants shows that AgNPs capped with heterocyclic alkyldimethylphenylphospholium and non-heterocyclic triphenyl-substituted phosphonium surfactants have the highest cytotoxicity among silver nanodispersions stabilized by the series of ammonium and phosphonium surfactants.

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