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Related to protonic: Protopic, Protonix IV


n. Abbr. p
The stable, positively charged nucleon, having a mass 1,836 times that of an electron and being a baryon composed of two up quarks and one down quark. The proton is a basic component of all atomic nuclei and the nucleus of the protium isotope of hydrogen.

[From Greek prōton, neuter of prōtos, first; see per in Indo-European roots.]

pro·ton′ic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Chemistry) chem (of a solvent, such as water) able to donate hydrogen ions to solute molecules
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References in periodicals archive ?
The ring-opening polymerization of epoxynorbornene linseed oils proceeds efficiently in the presence of a photogenerated protonic acid to form a polyether.
The fully hydrated acid forms of the membranes had protonic conductivities of 0.11 and 0.17 S/cm for the 40 and 60 mole% disulfonated copolymers in liquid water at 30[degrees]C, (13) which is comparable to or higher than Nation[R] 1100.
The combined results from these neutron techniques allows for a more thorough understanding of the factors responsible for the favorable protonic conductivity properties associated with this material.
Sulfuric acid undergoes self-ionization or autoprotolysis in the same manner as water and many other protonic solvents [4]: [Mathematical Expression Omitted] Just as the acidity of an aqueous solution is increased by increasing the concentration of [H.sub.3.O.sup.+], the acidity of [H.sub.2.SO.sub.4] can be further increased by a solute HA that behaves as an acid, thereby increasing the concentration of the [H.sub.3.SO.sup.+.sub.4] ion: [Mathematical Expression Omitted] There are only a few acids that are strong enough to ionize in this way.
N[H.sub.3] TPD curves associated with the acidity of protonic zeolites, such as HY5.1, HY5.2, and HY30 herein studied, usually, demonstrate peaks in two temperature ranges (see Figure 7).
Auto Business News-October 4, 2016--BMW US launches i8 Protonic Red
Because of these properties, there is a growing interest in testing ILs as a protonic charge carrier in proton exchange membranes allowing PEMFC to operate at temperatures above 80[degrees]C and low humidity.
On doping emeraldine base (EB) with nonoxidising protonic acids such as HCl, [H.sub.2]S[O.sub.4], or organic acids (p-toluene sulfonic acid), it is converted into emeraldine salt (ES) form which is electrically conducting [23, 24].
MacDiarmid, "'Polyaniline': protonic acid doping of the emeraldine form to the metallic regime," Synthetic Metals, vol.
Subsequent to the investigation of other highly conductive organic materials, MacDiarmid demonstrated the conductive states of PANI which arose upon protonic doping of the emeraldine form of PANI [21].