Novel poly(pyridinium) salts 4 were synthesized by polycondensation of 4,4′-(1,4-phenylene)bis(2,6-diphenylpyrylium tetrafluoroborate) with calix[4]arene diamines for the purpose of biosensing to meet the shape adaptability with the secondary structures of biological macromolecules. The polymers were characterized by NMR, FT-IR, elemental analysis, inherent viscosity, gel permeation chromatography (GPC), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), and wide-angle X-ray diffraction. Both the absorption and photoluminescence (PL) spectra of the polymers were also studied. Moreover, the interactions between polymer 4b and Pseudomonas fluorescensDNA were investigated primarily by a fluorescent titration method and transmission electron microscopy (TEM).
以
生物传感为目的,通过缩聚 4,4′-(1,4-亚苯基)双(2,6-二苯基
吡喃四
氟硼酸盐)与
钙[4]炔二胺合成了新型聚
吡啶鎓盐 4,以满足
生物大分子二级结构的形状适应性。研究人员通过核磁共振、傅立叶变换红外光谱、元素分析、固有粘度、凝胶渗透色谱法、差示扫描量热法、热重分析法和广角 X 射线衍射法对聚合物进行了表征。此外,还研究了聚合物的吸收光谱和光致发光(PL)光谱。此外,主要通过荧光滴定法和透射电子显微镜(
TEM)研究了聚合物 4b 与荧光假单胞菌 DNA 之间的相互作用。