MOBILE PROTONS IN SUPERPROTONIC CONDUCTORS OF PHOSPHATE GLASSES AND pH-ELECTRODE GLASSES

抄録

In oxide glasses, strongly hydrogen-bonded protons which give IR absorption band at around 2900 cm^-1 are very mobile, while hydrogen-bonding free protons which give its band at around 3600 cm^-1 are immobile or much less mobile. The mobilities of protons increase with the strength of the hydrogen bonding. The superprotonic conductors of oxide glasses are developed for the phosphate glasses containing a large amount of mobile protons and molecular water. The theories of potential development of pH-glass electrodes which are long pending problem are discussed in terms of the mobile protons of the glasses. We assert that the presence of the mobile protons is indispensable for its pH-response.