Poly(pyridinium) salts containing calix[4]arene segments in the main chain as potential biosensors
writer：Yan Lu, Changchun Xiao, Zhufang Yu, Xianshun Zeng, Yi Ren and Chenxi Li
keywords：Calixarene, polymer, DNA，sensor
source：期刊
specific source：J. Mater. Chem., 2009, 19, 8796–8802
Issue time：2009年
Novel poly(pyridinium) salts 4 were synthesized by polycondensation of 4,40-(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 fluorescens DNA were investigated primarily by a fluorescent titration method and transmission electron microscopy (TEM).