Preparation and magnetic control of metal-free magnetic emulsions and liposomes

为了开发无金属磁性载体或颗粒用于药物传递系统或MRI造影剂，我们分别研究了(i)具有表面活性的有机氮氧化物自由基化合物和（ii）由它们制备的无金属磁性胶束和乳液。因此，制备了包封中性油性氮氧化物自由基化合物的两亲性自由基化合物的稳定乳液，并在弱永磁体的作用下在水中自由移动。

With a view to developing metal-free magnetic carriers or particles for Drug Delivery System or the MRI contrast agents, respectively, we have investigated the preparation of (i) organic nitroxide radical compounds showing surface-activity and (ii) metal-free magnetic micelles and emulsions from them. Consequently, the stable emulsions of the amphiphilic radical compound encapsulating a neutral oily nitroxide radical compound have been prepared and moved freely in water under the action of a weak permanent magnet.