Elementary S N 2 reaction revisited. Effects of solvent and alkyl chain length on kinetics of halogen exchange in haloalkanes elucidated by Empirical Valence Bond simulation

2017 ◽  
Vol 1116 ◽  
pp. 96-101 ◽  
Author(s):  
Urška Jug ◽  
Domen Pregeljc ◽  
Janez Mavri ◽  
Robert Vianello ◽  
Jernej Stare
Keyword(s):  
Chain Length ◽  
Alkyl Chain ◽  
Valence Bond ◽  
Alkyl Chain Length ◽  
Empirical Valence Bond ◽  
Halogen Exchange ◽  
Kinetics Of

Influence of the Ligand Alkyl Chain Length on the Solubility, Aqueous Speciation, and Kinetics of Substitution Reactions of Water-Soluble M3S4 (M = Mo, W) Clusters Bearing Hydroxyalkyl Diphosphines

2013 ◽  
Vol 52 (15) ◽  
pp. 8713-8722 ◽  
Author(s):  
Tomás F. Beltrán ◽  
Rosa Llusar ◽  
Maxim Sokolov ◽  
Manuel G. Basallote ◽  
M. Jesús Fernández-Trujillo ◽  
...  
Keyword(s):  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Water Soluble ◽  
Substitution Reactions ◽  
Kinetics Of

Alkyl Chain Length Effects on Copolymerization Kinetics of a Monoacrylate with Hexanediol Diacrylate

2007 ◽  
Vol 9 (6) ◽  
pp. 1149-1156 ◽  
Author(s):  
Peter M. Johnson ◽  
Jeffrey W. Stansbury ◽  
Christopher N. Bowman
Keyword(s):  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Kinetics Of ◽  
Copolymerization Kinetics ◽  
Length Effects

Alkyl Chain Length Effect on Growth Kinetics of n-Alkanethiol Self-Assembled Monolayers on Gold Studied by X-Ray Photoelectron Spectroscopy

1996 ◽  
Vol 35 (Part 2, No. 12B) ◽  
pp. L1710-L1713 ◽  
Author(s):  
Takao Ishida ◽  
Naoki Nishida ◽  
Satoshi Tsuneda ◽  
Masahiko Hara ◽  
Hiroyuki Sasabe ◽  
...  
Keyword(s):  
Chain Length ◽  
Growth Kinetics ◽  
Photoelectron Spectroscopy ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Self Assembled Monolayers ◽  
Length Effect ◽  
X Ray ◽  
Assembled Monolayers ◽  
Kinetics Of

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

Nanomaterials ◽  
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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