Photochromic properties of perfluorosulfonic membranes modified by sodium molybdate

Autor:	S. M. Shilov, V. N. Pak, E. N. Brazhnikova
Rok vydání:	2011
Předmět:	chemistry.chemical_compound Membrane Aqueous solution chemistry Polymerization Sodium Sodium molybdate Inorganic chemistry chemistry.chemical_element General Chemistry Molybdate Absorption (chemistry) Degree of polymerization
Zdroj:	Russian Journal of General Chemistry. 81:2125-2128
ISSN:	1608-3350 1070-3632
DOI:	10.1134/s107036321110015x
Popis:	Transfer of a perfluorosulfonic membrane from the hydrogen form into the sodium form provides accessibility of pore space to sodium molybdate aqueous solution. Charge transfer spectra make it possible to judge the course of polymerization of capsulated molybdate ions and its intensification when the membranes are held in HCl vapor. The UV irradiation of the modified membranes causes a progressing absorption in the visible spectral region. The rate and depth of photoreduction increase as the concentration and degree of polymerization of molybdate ions increase. The scheme of the process was offered, which is based on taking into account a possibility of delocalization of 4d1 electrons of molybdenum(V) over the system of metal-metal bonds.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fc0bf7bbd825214ee913f8183f091bac https://doi.org/10.1134/s107036321110015x Zobrazit plný text záznamu Plný text ve formátu PDF