pH-Responsive Dual Cargo Delivery from Mesoporous Silica Nanoparticles with a Metal-Latched Nanogate
作者:Derrick Tarn、Min Xue、Jeffrey I. Zink
DOI:10.1021/ic3024265
日期:2013.2.18
was designed, synthesized, and assembled on mesoporoussilicananoparticles. This gating mechanism is capable of storing and releasing metal ions and molecules trapped in the pores. Pore openings derivatized with IDA can be latched shut by forming a bis-IDA chelate complex with a metal ion. This system was tested by loading with Hoechst 33342 as the probe cargo molecule, and latching with cobalt, nickel
一个由两个亚氨基二乙酸 (IDA) 分子和一个金属离子闩锁组成的纳米门被设计、合成并组装在介孔二氧化硅纳米粒子上。这种门控机制能够储存和释放被困在孔隙中的金属离子和分子。通过与金属离子形成双-IDA 螯合物,可以将 IDA 衍生的孔口锁闭。该系统通过加载 Hoechst 33342 作为探针货物分子并与钴、镍或钙金属离子锁定来进行测试。在中性水性环境中未观察到货物释放,但在酸刺激和/或添加竞争性结合配体后,两种货物均被释放。