addition‐fragmentation chemistry is applied to demonstrate the precisely controlled diffusion of chemical species through polymer networks. Fluorescent groups connected to polymer networks by allyl sulfide moieties become mobile upon irradiation with UV light due to radical‐mediated addition‐fragmentation bond exchange. Photoinduced transport through the bulk, into solution, and across film interfaces is demonstrated
应用光介加成碎片
化学方法来证明
化学物质通过聚合物网络的精确控制扩散。由于自由基介导的加成-断裂键交换,通过烯丙基
硫醚部分连接到聚合物网络的荧光基团在紫外线照射下变得可移动。证明了光诱导的穿过大块,进入溶液和跨膜界面的传输。