Immobilised photosensitisers for continuous flow reactions of singlet oxygen in supercritical carbon dioxide
Immobilised photosensitisers for continuous flow reactions of singlet oxygen in supercritical carbon dioxide
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DOI：
10.1039/c0sc00641f
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发表时间：
2011-01-01
期刊：
影响因子：
8.4
通讯作者：
George, Michael W.
中科院分区：
文献类型：
--
作者：
Han, Xue;Bourne, Richard A.;George, Michael W.
光敏剂已被纳入到聚合物和气凝胶载体中，用于在超临界二氧化碳scCO（2）中光化学生成单线态氧（1）O（2）。这些系统显示出高活性和可接受的寿命的α-萜品烯和香茅醇的光氧化在连续反应器中超过至少5小时的时间。最有效的光敏剂是聚氯乙烯（PVC）上的四（2，6）氯苯基卟啉（TDCPP）的共价偶联类似物。这种固定消除了将光敏剂与下游溶液分离的需要。
Photosensitisers have been incorporated into both polymer and aerogel supports for the photochemical generation of singlet oxygen, (1)O(2), in supercritical carbon dioxide, scCO(2). These systems showed high activity and an acceptable lifetime for the photo-oxidation of alpha-terpinene and of citronellol in continuous reactors over a period of at least 5 h. The most effective photosensitiser was a covalently coupled analogue of tetradi(2,6)chloro-phenylporphyrin (TDCPP) on polyvinyl chloride (PVC). This immobilisation removes the need to separate the photosensitiser from the downstream solution.