Intercalation of cationic phthalocyanines into layered titanates and control of the microstructures

被引:22
作者
Kaito, R
Miyamoto, N
Kuroda, K
Ogawa, M
机构
[1] Japan Sci & Technol Corp, PRESTO, Shinjuku Ku, Tokyo 1698050, Japan
[2] Waseda Univ, Dept Earth Sci, Shinjuku Ku, Tokyo 1698050, Japan
[3] Waseda Univ, Kagami Mem Lab Mat Sci & Technol, Shinjuku Ku, Tokyo 1690051, Japan
[4] Waseda Univ, Dept Appl Chem, Shinjuku Ku, Tokyo 1698555, Japan
关键词
D O I
10.1039/b210237b
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Two cationic phthalocyanines (Pc), a tetravalent Alcian Blue pyridine variant (ABpy(4+)) and a monovalent iron(III) phthalocyanine (FePc+), were intercalated into two layered titanates derived from Na2Ti3O7 and Cs(x)Ti(2-x/4)square(x/4)O(4) (square = vacancy, x = 0.7) by using the corresponding propylammonium titanates as the intermediates for guest displacement reactions. When Na2Ti3O7 was used as a host, segregation occurred in the products, since it has a relatively higher layer charge density; some interlayer spaces accommodated Pc, but the others contained propylammonium cations. On the other hand, Pc cations were homogeneously intercalated into the interlayer spaces of Ti(2-x/4)square(x/4)O(4) layers. ABpy(4+) formed agglomerates in the gallery between Ti(2-x/4)square(x/4)O(4) layers, whereas FePc+ was distributed molecularly. In the ABpy-Ti(2-x/4)square(x/4)O(4) system, further ABpy(4+) was added or any remaining propylammonium cations were removed by thermal treatment under reduced pressure in order to vary the microstructure, which resulted in the formation of higher aggregated states of ABpy(4+). Electron transfer from FePc+ to Ti(2-x/4)square(x/4)O(4) induced by visible light irradiation was observed for FePc-Ti(2-x/4)square(x/4)O(4) by fluorescence measurements.
引用
收藏
页码:3463 / 3468
页数:6
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