已设计和合成了两个系列的核脂质,一个具有可变的链长(dT- C n系列),另一个在分子的疏水和亲水界面上结合了芳族光响应部分(P-dT- C n系列) )。表面张力测量揭示了临界胶束浓度(CMCs)随烷基链长和光敏链段的引入而变化。P-dT-C n系列显示出较低的CMC和每个分子的最小面积(A min)值是因为额外的芳环之间的π–π堆积有助于胶束形成中更紧密的堆积。这两个系列在CMC处均显示出与具有相同分子结构的常规表面活性剂相似的表面张力。他们的胶束聚集体用于封装疏水尼罗红(NR)。对于P-dT- C n系列,封装的NR在光辐照下释放,并且通过控制辐照强度或打开和关闭辐照很容易实现控制释放。生物相容性,互补碱基识别和光响应性的整合使得两亲核糖在生物医学和生物技术应用中大有前途。
To develop non-cationic vectors for gene delivery, a novel class of thymidine-based amphiphiles have been constructed. These molecules showed good biocompatibility. Their complexation with polyadenylic acid through hydrogen bonding and π–π stacking interaction was demonstrated by gel electrophoresis, capillary electrophoresis, transmission electronic microscopy (TEM) and molecular dynamics simulation. It was also found that their biocompatibility and binding ability with DNA varied inversely with the length of the alkyl chains.
Surface properties of nucleolipids and photo-controlled release of hydrophobic guest molecules from their micellar aggregates
作者:Yawei Sun、Haiyan Yu、Yongfeng Yan、Cuixia Chen、Wenwen Xu、Jian R. Lu、Hai Xu
DOI:10.1039/c4sm01374c
日期:——
photo-responsive moiety at the molecular hydrophobic and hydrophilic interface (the P-dT-Cn series). Surface tension measurements revealed the variations of critical micelle concentrations (CMCs) with the alkyl chain length and the incorporation of the photo-responsive segment. The P-dT-Cn series showed broadly lower CMCs and the minimum area per molecule (Amin) values because the π–πstacking between the
已设计和合成了两个系列的核脂质,一个具有可变的链长(dT- C n系列),另一个在分子的疏水和亲水界面上结合了芳族光响应部分(P-dT- C n系列) )。表面张力测量揭示了临界胶束浓度(CMCs)随烷基链长和光敏链段的引入而变化。P-dT-C n系列显示出较低的CMC和每个分子的最小面积(A min)值是因为额外的芳环之间的π–π堆积有助于胶束形成中更紧密的堆积。这两个系列在CMC处均显示出与具有相同分子结构的常规表面活性剂相似的表面张力。他们的胶束聚集体用于封装疏水尼罗红(NR)。对于P-dT- C n系列,封装的NR在光辐照下释放,并且通过控制辐照强度或打开和关闭辐照很容易实现控制释放。生物相容性,互补碱基识别和光响应性的整合使得两亲核糖在生物医学和生物技术应用中大有前途。