Covalent Immobilization of (−)-Riboflavin on Polymer Functionalized Silica Particles: Application in the Photocatalytic <i>E</i>
→<i>Z</i>
Isomerization of Polarized Alkenes
作者:Jan B. Metternich、Sven Sagebiel、Anne Lückener、Sebastian Lamping、Bart Jan Ravoo、Ryan Gilmour
DOI:10.1002/chem.201800231
日期:2018.3.20
The covalent immobilization of the biomimetic, photo‐organocatalyst (−)‐riboflavin on silica micro‐ and nanoparticles via atom transfer radical polymerization (ATRP) is disclosed. Given the effectiveness of (−)‐riboflavin as a versatile, environmentally benign photocatalyst, an immobilization strategy based on acrylate‐linker modification of the catalyst core and controlled polymerization on initiator
公开了通过原子转移自由基聚合(ATRP)将仿生光有机催化剂(-)-核黄素共价固定在二氧化硅微颗粒和纳米颗粒上的方法。鉴于(-)-核黄素作为一种多功能的,对环境无害的光催化剂的有效性,已经开发了一种基于丙烯酸酯-交联剂修饰催化剂核和在引发剂预官能化的二氧化硅颗粒上进行受控聚合的固定化策略。基准肉桂腈的E → Z异构化(Z / E高达88:12),催化剂负载量为0.97 mol%。固定的光催化剂的表征支持将催化剂共价嵌入二氧化硅颗粒表面上的聚合物刷中。