BioAnalytical and Nanobiomedicinal Laboratory, Department of Biochemical Science and Technology, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan; Department of Chemistry and Industrial Chemistry, University of Genoa, via Dodecaneso 31, Genoa 16146, Italy.
Talanta. 2013 Dec 15;117:352-8. doi: 10.1016/j.talanta.2013.09.011. Epub 2013 Sep 25.
Synthesis, characterization and application of Au-PANI-Calix and Au-PANI-Nap nanocomposites, is reported herein. An easy template free green synthesis is proposed and discussed for easy expediency. A variety of analytical techniques were used to characterize the nanocomposites: UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, Dynamic light scattering (DLS), X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS) were used to characterize the nanocomposites. Surface morphology was studied by transmission electron microscopy (TEM). The nanocomposites were immobilized on screen-printed electrode and showed electroactivity in neutral pH, making them promising candidates for various analytical applications. A sensitive and selective detection of Cu(2+) was perceived on the Au-PANI-Calix modified electrode with no interference from ions K(+), Ni(2+), Co(2+), Pb(2+), Cr(3+) with a detection limit of 10nM. The copper detection is facilitated for accessible ligation with 4-sulfocalix[4]arene, so as the Cu(II)-Calix complex formed. The electrode modified with Au-PANI-Nap showed sensing application towards H2O2 with a detection limit of 1 μM. The modified electrodes were reproducible and stable for 2 months.
本文报道了 Au-PANI-Calix 和 Au-PANI-Nap 纳米复合材料的合成、表征和应用。提出并讨论了一种简单的无模板绿色合成方法，以方便快捷。采用多种分析技术对纳米复合材料进行了表征：紫外-可见光谱、傅里叶变换红外光谱（FTIR）、拉曼光谱、动态光散射（DLS）、X 射线衍射（XRD）、能谱（EDX）和 X 射线光电子能谱（XPS）。通过透射电子显微镜（TEM）研究了纳米复合材料的表面形态。将纳米复合材料固定在丝网印刷电极上，在中性 pH 下表现出电化学活性，使它们成为各种分析应用的有前途的候选材料。在 Au-PANI-Calix 修饰电极上对 Cu(2+)进行了灵敏和选择性检测，没有来自 K(+)、Ni(2+)、Co(2+)、Pb(2+)、Cr(3+)离子的干扰，检测限为 10nM。铜的检测得益于与 4-磺基杯[4]芳烃的易连接性，从而形成 Cu(II)-Calix 配合物。修饰有 Au-PANI-Nap 的电极对 H2O2 表现出传感应用，检测限为 1 μM。修饰电极具有 2 个月的可重复性和稳定性。
