Silica Gel–Supported P-, Ge-, and Sb-Porphyrins for Visible Light Inactivation of Bacteria
Silica Gel–Supported P-, Ge-, and Sb-Porphyrins for Visible Light Inactivation of Bacteria
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硅胶支持的 P、Ge 和 Sb 卟啉用于可见光灭活细菌
DOI：
10.5772/intechopen.70004
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Jin Matsumoto
中科院分区：
文献类型：
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作者：
M. Yasuda;Jin Matsumoto
本章描述了高价P(V)、Ge（IV）、Sb(V) （P（tpp）、Ge（tpp）、Sb(tpp)）的（二羟基）四苯基卟啉配合物的光催化作用。这些发色团通过库仑力和轴向羟基配体与硅醇基团之间的氢键作用固定在硅胶（SiO2）上，生成M(tpp)/SiO2 （M = P, Ge, Sb）复合材料。采用M(tpp)/SiO2对大肠杆菌和嗜肺军团菌进行光灭活。此外，M(tpp)/SiO2对自然发生在冷却塔和公共喷泉中的嗜肺乳杆菌进行了光灭活实验。值得注意的是，80 g Sb(tpp)/SiO2溶菌剂，含40 mg Sb(tpp)，在13 m3的喷泉水中，在阳光照射下，军团菌浓度维持在100 CFU/100 mL以下120天。光失活过程是通过M（tpp）从SiO2中解放出来，在细菌内部吸附M(tpp)，在可见光照射下产生活性氧（如单线态氧），从而导致细菌凋亡。在此基础上，我们将P和Sb卟啉轴向配体分别修饰为烷基氧基、烷基乙烯二氧基和烷基吡啶基，制备了水溶性卟啉。这些水溶性卟啉用于大肠杆菌和酿酒酵母的光动力灭活。
This chapter describes the photocatalysis action of (dihydroxo)tetraphenyl¬porphyrinato complexes of high valent P (V), Ge (IV), and Sb (V) (P(tpp), Ge(tpp), and Sb(tpp)). These chromophores were fixed onto silica gel (SiO2) through Coulombic forces and hydro - gen bonding between axial hydroxo ligands and silanol groups to produce M(tpp)/SiO2 (M = P, Ge, and Sb) composites. M(tpp)/SiO2 were applied to the photo-inactivation of Escherichia coli and Legionella pneumophila . Moreover, M(tpp)/SiO2 was subjected to practical experiments for the photoinactivation of L. pneumophila naturally occurring in a cooling tower and a public fountain. It is noteworthy that 80 g of Sb(tpp)/SiO2 cata - lyst, containing 40 mg of Sb(tpp) maintained a concentration of Legionella species below 100 CFU/100 mL for 120 days in 13 m3 of water in a fountain under sunlight exposure. The photoinactivation proceeded through the liberation of M(tpp) from SiO2, adsorp tion of M(tpp) inside bacteria, and generation of reactive oxygen species, such as singlet oxygen, under visible light irradiation, thus resulting in bacteria apoptosis. Based on these results, we developed water-soluble porphyrins by modification of P and Sb por - phyrin axial ligands to alkyloxo, alkylethylenedioxy, and alkylpyridinium groups. These water-soluble porphyrins were applied to the photodynamic inactivation of E. coli and Saccharomyces cerevisiae .
可见光照射下硅胶负载二氢四苯基卟啉锑高效光催化氧化环烯烃
DOI：
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发表时间：
2004
期刊：
Chemistry Letters 33
影响因子：
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作者：
T.Shiragami;R.Makise;Y.Inokuchi;J.Matsumoto;H.Inoue;M.Yasuda
通讯作者：
M.Yasuda