Hybridization of layered niobates with cationic dyes
Hybridization of layered niobates with cationic dyes
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DOI：
10.1163/156856706778400307
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发表时间：
2006-08
影响因子：
3.3
通讯作者：
T. Hattori;Zhiwei Tong;Yoshiyuki Kasuga;Y. Sugito;Tatsuto Yui;K. Takagi
中科院分区：
文献类型：
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作者：
T. Hattori;Zhiwei Tong;Yoshiyuki Kasuga;Y. Sugito;Tatsuto Yui;K. Takagi
研究了两种不同类型的有机聚阳离子1，1 '-二甲基-4，4'-联吡啶双阳离子（甲基紫精，MV 2+）和5，10，15，20-四（N-甲基-吡啶-4-基）-21H，23H-卟啉四阳离子（TMPyP 4+）与层状半导体的杂化，以构建用于太阳能转换和存储的高效染料改性半导体。两种不同的方法用于阳离子物质的直接插层，即，以K_4Nb_6O_（17）·3H_2O为起始主体的常规离子交换法和以H_4Nb_6O_（17）为起始主体的新型酸碱中和法。这两种方法表现出完全不同的行为和特性的特点都将讨论有关的混合形成的结构，观察到的吸收量的客体分子和嵌入率。还将讨论光诱导电子转移反应的分析，以显示客体分子嵌入的控制如何影响这些独特混合物的光官能度。
The hybridization of two different types of organic polycations, 1,1’-dimethyl-4,4’-bipyridinium dications (methyl viologen, MV2+) and 5,10,15,20-tetrakis(N-methyl-pyridinium-4-yl)-21H,23H-porphine tetracations (TMPyP4+), into layered niobates was investigated to construct an efficient dye-modified semiconductor for solar conversion and storage. Two different methods were employed for the direct intercalation of the cationic species, i.e., conventional ion-exchange with K4Nb6O17 · 3H2O as the starting host and a novel acid-base neutralization method with H4Nb6O17 as the starting host. These two methods showed totally different behavior and the characteristic features of both will be discussed in relation to the structure of the hybrid formed, the amount of absorption observed for the guest molecules and the intercalation rates. An analysis of the photo-induced electron-transfer reactions will also be discussed to show how control of the intercalation of guest molecules affects the photofunctionality of these unique hybrids.