Centre for Materials for Electronics Technology, Department of Information Technology, Government of India, Panchawati, Pune, India.
Colloids Surf B Biointerfaces. 2012 Apr 1;92:35-41. doi: 10.1016/j.colsurfb.2011.11.006. Epub 2011 Nov 27.
Silver-polyaniline (Ag-PANI) nanocomposite was synthesized by in situ polymerization method using ammonium persulfate (APS) as an oxidizing agent in the presence of dodecylbenzene sulfonic acid (DBSA) and silver nitrate (AgNO(3)). The as synthesized Ag-PANI nanocomposite was characterized by using different analytical techniques such as UV-visible (UV-vis) and Fourier transform Infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), thermo gravimetric analysis (TGA), X-ray diffraction (XRD), and transmission electron microscopy (TEM). UV-visible spectra of the synthesized nanocomposite showed a sharp peak at ~420 nm corresponding to the surface plasmon resonance (SPR) of the silver nanoparticles (AgNPs) embedded in the polymer matrix which is overlapped by the polaronic peak of polyaniline appearing at that wavelength. Nanowires of Ag-PANI nanocomposite with diameter 50-70 nm were observed in FE-SEM and TEM. TGA has indicated an enhanced thermal stability of nanocomposite as compared to that of pure polymer. The Ag-PANI nanocomposite has shown an antibacterial activity against model organisms, a gram positive Bacillus subtilis NCIM 6633 in Mueller-Hinton (MH) medium, which is hitherto unattempted. The Ag-PANI nanocomposite with monodispersed AgNPs is considered to have potential applications in sensors, catalysis, batteries and electronic devices.
银-聚苯胺（Ag-PANI）纳米复合材料是通过原位聚合方法合成的，使用过硫酸铵（APS）作为氧化剂，存在于十二烷基苯磺酸（DBSA）和硝酸银（AgNO（3））中。通过使用不同的分析技术，如紫外-可见（UV-vis）和傅里叶变换红外光谱（FT-IR）、场发射扫描电子显微镜（FE-SEM）、热重分析（TGA）、X 射线衍射（XRD）和透射电子显微镜（TEM）对合成的 Ag-PANI 纳米复合材料进行了表征。合成纳米复合材料的紫外-可见光谱在~420nm 处显示出一个尖锐的峰，对应于嵌入聚合物基质中的银纳米粒子（AgNPs）的表面等离子体共振（SPR），该峰与在该波长出现的聚苯胺的极化子峰重叠。FE-SEM 和 TEM 观察到 Ag-PANI 纳米复合材料的纳米线，直径为 50-70nm。TGA 表明纳米复合材料的热稳定性比纯聚合物有所提高。Ag-PANI 纳米复合材料对模式生物，革兰氏阳性芽孢杆菌枯草芽孢杆菌 NCIM 6633 在 Mueller-Hinton（MH）介质中表现出抗菌活性，这是迄今为止尚未尝试过的。具有单分散 AgNPs 的 Ag-PANI 纳米复合材料被认为在传感器、催化、电池和电子设备中有潜在的应用。
