利用自制的可聚合阳离子乳化剂甲基丙烯酰氧乙基二甲基十六烷基溴化铵(MDHB),与甲基丙烯酸甲酯(MMA)通过胶束共聚合得到阳离子的纳米聚合物。测定了聚合产物的粒径、zeta电位和分子量,用FT-IR、1 H NMR和TG对产物结构进行表征,用二倍稀释法研究了该类聚合物对大肠杆菌(E.coli)和金黄色葡萄球菌(S.aureus)的最低杀菌浓度(MBC)和最低抑菌浓度(MIC)。结果表明,MDHB是影响聚合物的结构特征及抗菌性的主要因素,随着MDHB用量增加,粒径增大、抗菌性增强、zeta电位和分子量降低。聚合产物热稳定性良好,能添加到通用聚合物中制得抗菌材料,因而该类聚合物有望成为具有开发应用潜力的新型抗菌剂。
A new ionic pair complex,1,2′-dinithile-1,2′-dithiolene nickel(II) containing substituted benzylpyridinium [Bz(Me)Py]2[Ni(mnt)2],is prepared and characterized by elemental analyses,IR,UV-VIS and single crystal X-ray diffraction.Where [Bz(Me)Py]+ was 1-(1′-phenylethyl)-pyridinium and mnt2-is 1,2′-dinithile-1,2′-dithiolene.The crystal structure was solved by direct method and refined by full-matrix least-squares methods for All the nonhydrogen atoms.The final R1 and wR2 for all data were 0.0450 and 0.1236,respectively.The complex is composed of two [Bz(Me)Py]+ cations and a [Ni(mnt)2]2-anion.The [Ni(mnt)2]2-anions form a stepwise structure by π-π stacking interactions between the CN groups.The cation-anion C-H···N hydrogen bonds and cation-cation C-H···π interactions give further rise to a network structure.
