In organic chemistry, quaternary ammonium cations, also known as quats, are positively-charged polyatomic ions of the structure [NR4]+, where R is an alkyl group, an aryl group [1] or organyl group.

May 6, 2019 · Quaternary ammonium compounds, referred to as QACs, are cationic substances with a structure on the edge of organic and inorganic chemistry and unique physicochemical properties. The purpose of the present work is to introduce QACs and …

Nov 24, 2015 · In this work, we provide a comprehensive investigation of the effect of a series of alkyl substituents on the electrochemical stability of quaternary ammonium cations. The effect of alkyl chain length, size, and type (i.e., primary vs. secondary alkyl groups) is studied.

May 4, 2023 · Quaternary ammonium cation general structure. "R" is any cluster of atoms. Group I quats are called "didecyl dimethyl ammonium chloride", or DDAC for short. These are the simplest quats that have straight chains of carbon atoms attached to the nitrogen (Figure 2).

Nov 27, 2014 · The alkaline stability of 26 different quaternary ammonium groups (QA) is investigated for temperatures up to 160 °C and NaOH concentrations up to 10 mol L −1 with the aim to provide a basis for the selection of functional groups for hydroxide exchange membranes in alkaline fuel cells and of ionic-liquid cations stable in basic conditions ...

Quaternary ammonium cations, also known as quats, are positively charged polyatomic ions of the structure NR 4 + with R being alkyl groups. Unlike the ammonium ion NH 4 + itself and primary, secondary, or tertiary ammonium cations, the quaternary ammonium cations are permanently charged, independent of the pH of their solution.

Nov 5, 2023 · Here we show that, through combining supramolecular recognition with solid-phase abstraction, we can overturn the canonical order of synthetic receptor selectivity across a diverse range of ammonium cation scaffolds.

Nov 8, 2023 · Quaternary ammonium salts are chemical compounds with the formula NR +4 X –, where R is an alkyl or aryl group and X is an anion (typically a halide ion). The quaternary ammonium cations are always positively charged. In aliphatic salt, the central nitrogen atom is substituted with alkyl or alkyl aryl groups.

Oct 14, 2022 · Quaternary ammonium compounds, also called quats or QACs, are a group of chemicals used for a variety of purposes including as preservatives, surfactants, antistatic agents, and as active ingredients in disinfectants and sanitizers.

Oct 8, 2024 · Quaternary ammonium cations, also known as quats, are positively charged polyatomic ions of the structure NR + 4, R being an alkyl group or an aryl group. Unlike the ammonium ion (NH + 4) and the primary, secondary, or tertiary ammonium cations, the quaternary ammonium cations are permanently charged, independent of the pH of their solution.