作者:Robert M. Kevwitch、Charles S. Shanahan、Dominic V. McGrath
DOI:10.1039/c1nj20841a
日期:——
Linear analogs have been synthesized to model disassembling dendrimers. These linear analogs provide a facile synthesis to molecules that can be used to test new trigger groups and cleavage vectors. Vanillin and o-vanillin were used as the monomer units of these analogs and two trigger groups, allyl and o-nitrobenzyl, were chosen to test the disassembly process. Allyl triggered analogs 1a–d and 3a–d and o-nitrobenzyl triggered analogs 2a–c and 4a–c showed good to excellent disassembly as followed by the evolution of p-nitrophenoxide reporter ion by UV-Visible spectroscopy. The rate and yield of disassembly was shown to depend on experimental conditions as well as length of the cleavage vector.
线性类似物已被合成以模拟解体的树枝状聚合物。这些线性类似物提供了一种简单的合成方法,用于制备可以测试新的触发基团和裂解向量的分子。香草醛和邻香草醛被用作这些类似物的单体单位,选择了两种触发基团:烯丙基和邻硝基苯基,以测试解体过程。烯丙基触发的类似物1a–d和3a–d,以及邻硝基苯基触发的类似物2a–c和4a–c表现出良好到优秀的解体,随着p-硝基苯氧阴离子报告离子的释放,通过紫外可见光谱进行了检测。解体的速率和产率显示出依赖于实验条件以及裂解向量的长度。