Photocyanation of pyrene across an oil/water interface in a polymer microchannel chip.
Photocyanation of pyrene across an oil/water interface in a polymer microchannel chip.
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DOI：
10.1039/b207991g
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发表时间：
2002-11
期刊：
影响因子：
6.1
通讯作者：
K. Ueno;F. Kitagawa;N. Kitamura
中科院分区：
文献类型：
--
作者：
K. Ueno;F. Kitagawa;N. Kitamura
利用两种聚合物微通道芯片研究了芘（PyH）在油/水界面上的光氰化反应。芯片（通道深度为20微米，宽度为100微米）的光刻和压印方法的基础上，与微加工的硅模板被用于压印。作为光反应的典型实例，通过压力驱动流将PyH和1，4-二氰基苯的NaCN水溶液和碳酸丙烯酯溶液分别引入Y结构的微通道芯片中，具有相同的流速。通过高压汞灯对整个通道芯片进行光照射导致形成1-氰基芘（PyCN），如油相的GC-MS分析所证实的。结果表明，PyH的界面光化学反应沿着微通道内的水/油溶液流动顺利进行。在最佳条件下，采用三层通道芯片，在210 s的反应时间内，PyCN的绝对产率高达73%.
Photocyanation of pyrene (PyH) across an oil/water interface was explored by using two types of polymer microchannel chip. The chips (channel depth of 20 microm and width of 100 microm) were fabricated on the basis of photolithography and an imprinting method, with micromachined silicon templates being used for imprinting. As a typical example of the photoreaction, an aqueous NaCN solution and a propylene carbonate solution of PyH and 1,4-dicyanobenzene were brought separately into a Y-structured microchannel chip with the same flow velocity by pressure driven flow. Light irradiation onto the whole of the channel chip by a high-pressure Hg lamp resulted in formation of 1-cyanopyrene (PyCN), as confirmed by GC-MS analysis of the oil phase. The results demonstrated that the interfacial photochemical reaction of PyH proceeded successfully along the water/oil solution flow in the microchannel. Under optimum conditions by using a three-layer channel chip, absolute PyCN yields as high as 73% were attained with a reaction time of 210 s.