Temperature-driven oxygenation rate control by polymeric photosensitizer
Temperature-driven oxygenation rate control by polymeric photosensitizer
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DOI：
10.1021/ja062949c
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发表时间：
2006-07-12
影响因子：
15
通讯作者：
Hirai, Takayuki
中科院分区：
文献类型：
--
作者：
Koizumi, Hisao;Shiraishi, Yasuhiro;Hirai, Takayuki
由N-异丙基丙烯酰胺(NIPAM)和二苯甲酮(BP)单元组成的聚合物光敏剂聚(NIPAM-co-BP)在水中表现出温度控制的氧化活性。该系统在<；17°C时促进热致氧化增强，在>；22°C时抑制。这种前所未有的光氧化活性是由聚合物从胶束到球状的热致相变触发的，巧妙地控制单线态氧的稳定性和扩散以及底物的位置。
A polymeric photosensitizer, poly(NIPAM-co-BP), consisting ofN-isopropylacrylamide (NIPAM) and benzophenone (BP) units, demonstrates a temperature-controlled oxygenation activity in water. The system promotes a heat-induced oxygenation enhancement at <17 °C and suppression at >22 °C. This unprecedented photo-oxygenation activity is triggered by a heat-induced phase transition of the polymer fromcoiltomicelle, and then toglobulestate, cleverly controlling the stability and diffusion of singlet oxygen and the location of substrate.