| 释义 |
protonation Chem.|prəʊtəˈneɪʃən|
[f. prec. + -ion.]
The action or result of protonating.
1948Jrnl. Biol. Chem. CLXXV. 249 The effectiveness of the positively charged ammonium group in preventing appreciable protonation of the carboxyl group of the l-leucine cation in 100 per cent sulfuric acid can be appreciated when it is remembered that both acetic acid and monochloracetic acid are completely ionized in this solvent. 1958Jrnl. Amer. Chem. Soc. LXXX. 3715/1 If one of the benzene rings in diphenyl- or triphenylmethanol is replaced by a pyridine ring, protonation of the nitrogen atom would be expected to decrease the stability of the carbonium ion produced in sulfuric acid. 1970Nature 25 July 370/1 The double helix denatures abruptly at both low and high pH because of protonation of amine groups near pH 3 and ionization of hydroxyl groups near pH 11·5. 1976Sci. Amer. June 43/3 The release and uptake of protons by intact cells was clearly different from the change in protonation observed during the photo⁓reaction of isolated purple membrane. |