Mondal Sanjoy, Rana Utpal, Malik Sudip
Polymer Science Unit, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India.
ACS Appl Mater Interfaces. 2015 May 20;7(19):10457-65. doi: 10.1021/acsami.5b01806. Epub 2015 May 5.
Facile synthesis of polyaniline@Ag composite has been successfully demonstrated by a simple solution-dipping method using high-aspect-ratio benzene tetracarboxylic acid-doped polyaniline (BDP) fiber as a nontoxic reducing agent as well as template cum stabilizer. In BDP@Ag composite, BDP fibers are decorated with spherical Ag nanoparticles (Ag NPs), and the population of Ag NPs on BDP fibers is controlled by changing the molar concentration of AgNO3. Importantly, Ag-NP-decorated BDP fibers (BDP@Ag composites) have been evolved as a sensitive materials for the detection of trace amounts of 4-mercaptobenzoic acid and rhodamine 6G as an analyte of surface-enhanced Raman scattering (SERS), and the detection limit is down to nanomolar concentrations with excellent recyclability. Furthermore, synthesized BDP@Ag composites are applied simultaneously as an active SERS substrate and a superior catalyst for reduction of 4-nitrothiophenol.
通过一种简单的溶液浸渍法，以高纵横比的苯四羧酸掺杂聚苯胺（BDP）纤维作为无毒还原剂以及模板兼稳定剂，已成功证明了聚苯胺@银复合材料的简便合成。在BDP@银复合材料中，BDP纤维上装饰有球形银纳米颗粒（Ag NPs），通过改变硝酸银的摩尔浓度来控制BDP纤维上Ag NPs的数量。重要的是，银纳米颗粒修饰的BDP纤维（BDP@银复合材料）已发展成为一种用于检测痕量4-巯基苯甲酸和罗丹明6G作为表面增强拉曼散射（SERS）分析物的灵敏材料，检测限低至纳摩尔浓度，且具有出色的可回收性。此外，合成的BDP@银复合材料同时用作活性SERS基底和用于还原4-硝基硫酚的优良催化剂。
