TY - JOUR
T1 - Synthesis of methylviologen-HTiNbO5 intercalation compound and its photochemical behavior
AU - Nakato, Teruyuki
AU - Miyata, Hirokatsu
AU - Kuroda, Kazuyuki
AU - Kato, Chuzo
N1 - Funding Information:
This work was partially supported by Nippon Sheet Glass Foundation for Materials Research. Waseda University also supported us as a Special Project Research.
PY - 1988/12
Y1 - 1988/12
N2 - A novel intercalation compound composed of layered titanoniobic acid (HTiNbO5) and methylviologen was synthesized and its photochemical behavior was investigated. Although methylviologen could not be intercalated into the interlayer region of titanoniobic acid directly, the intercalation compound was obtained by guest exchange with the propylammonium-HTiNbO5 intercalation compound. When the viologen intercalated compound was irradiated by UV light under an N2 atmosphere or under a vacuum, the compound turned blue. Visible spectroscopy and ESR indicated the formation of viologen radical cations. The phenomenon was thought to be due to the electron transfer from the oxygen-deficient layered oxide to the viologen. The oxidation of the viologen radical cations did not occur under O2-free conditions; therefore the oxygen was responsible for the bleaching.
AB - A novel intercalation compound composed of layered titanoniobic acid (HTiNbO5) and methylviologen was synthesized and its photochemical behavior was investigated. Although methylviologen could not be intercalated into the interlayer region of titanoniobic acid directly, the intercalation compound was obtained by guest exchange with the propylammonium-HTiNbO5 intercalation compound. When the viologen intercalated compound was irradiated by UV light under an N2 atmosphere or under a vacuum, the compound turned blue. Visible spectroscopy and ESR indicated the formation of viologen radical cations. The phenomenon was thought to be due to the electron transfer from the oxygen-deficient layered oxide to the viologen. The oxidation of the viologen radical cations did not occur under O2-free conditions; therefore the oxygen was responsible for the bleaching.
UR - http://www.scopus.com/inward/record.url?scp=0000663034&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000663034&partnerID=8YFLogxK
U2 - 10.1016/0168-7336(88)80063-9
DO - 10.1016/0168-7336(88)80063-9
M3 - Article
AN - SCOPUS:0000663034
SN - 0168-7336
VL - 6
SP - 231
EP - 238
JO - Reactivity of Solids
JF - Reactivity of Solids
IS - 2-3
ER -