kinetically-driven thiol-maleimide "click" chemistry and thermodynamically reversible furan-maleimide cycloaddition/retrocycloaddition reactions. Growth is controlled by taking advantage of the selective thiol-ene addition of thiols to the electron withdrawn alkene of maleimide in the presence of electron rich alkene of oxanorbornene. Subsequent activation of growing dendrons/dendrimers requires only heat to
使用动力学驱动的
硫醇-马来
酰亚胺“点击”
化学和热力学可逆的
呋喃-马来
酰亚胺环加成/逆环加成反应的正交组合,分歧地合成了一组树枝状和树枝状大分子。通过在氧杂
降冰片烯的富电子烯烃存在下,将
硫醇选择性地
硫醇-烯加成到马来
酰亚胺的吸电子的烯烃中来控制生长。随后生长的树突/树状聚合物的活化仅需加热即可诱导外围
呋喃保护基的动态共价释放。引入的方法学为多功能树状聚合物提供了一条新途径,原则上可以通过在树状聚合物生长的任何阶段引入不同的支链单体来合成,