| 释义 |
▪ I. protonic, a.1 rare—0.|prəʊˈtɒnɪk|
[f. pro-2 + tonic.]
A more etymological form for pretonic.
1890in Cent. Dict.
▪ II. protonic, a.2|prəʊˈtɒnɪk|
[f. proton + -ic.]
a. Of, pertaining to, or characteristic of, a proton or protons.
1929A. N. Whitehead Process & Reality 127 Each proton is a society of protonic occasions. 1932E. Molloy Compl. Wireless 113/1 If..an atom happens to lose one or more of its planetary electrons..some of the protons become unbalanced, and there is a surplus of protonic force. 1953R. B. Braithwaite Scientific Explanation 93 Hydrogen atoms behave..as if they were solar systems each with an electronic planet revolving round a protonic sun. 1961G. R. Choppin Exper. Nuclear Chem. i. 1 The existence of nuclei means, therefore, that there must also be another force present which is strong enough to counterbalance the protonic repulsion and hold the nucleons together. 1976Nature 23 Sept. 298/2 It is important at each step to vary the pH of the aqueous buffered component to keep the protonic activity of the solvent constant.
b. Chem. Of an acid, solvent, etc.: possessing a proton which can be used in protonation. Of a hydrogen atom in a molecule: available for use in protonation; possessing some positive charge.
1951Jrnl. Polymer Sci. VI. 518 If we use this value for both the methyl and butyl salts in the protonic solvents, we obtain the B values given in..Table VIII. 1953Audrieth & Kleinberg Non-Aqueous Solvents ii. 28 Why should not any protonic solvent, capable of undergoing limited self-ionization into hydrogen ion and some base-analog ion, serve as a parent substance of a system of acids, bases, and salts? 1966Phillips & Williams Inorg. Chem. II. xxxiii. 563 Organometallic compounds undergo typical reactions with compounds which contain protonic hydrogen, i.e. which act as acids towards them... Of these reactions, hydrolysis is one of the most important. 1968[see hydridic a.]. 1969T. C. Waddington Non-Aqueous Solvents i. 8 In terms of Brønsted-Lowry or protonic acids, the strongest acid in a solvent is the protonated form of that solvent and the strongest base the deprotonated form.
Hence proˈtonically adv.
1979Science 7 Dec. 1157/2 The semifluid bimolecular lipid membrane and the plug-through complexes form a condensed, continuous nonaqueous (protonically insulating) sheet that acts as the osmotic barrier and separates the aqueous proton conductors on either side. |