Department of Chemistry and Biochemistry, University of Notre Dame , 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States.
ACS Appl Mater Interfaces. 2014 Feb 26;6(4):2262-9. doi: 10.1021/am4052602. Epub 2014 Feb 5.
We show the general functionalization of cotton fabrics using solution-synthesized CdSe and CdTe nanowires (NWs). Conformal coatings onto individual cotton fibers have been achieved through various physical and chemical approaches. Some involve the electrostatic attraction of NWs to cotton charged positively with a Van de Graaff generator or via 2,3-epoxypropyltrimethylammonium chloride treatments. Resulting NW-functionalized textiles consist of dense, conformal coatings and have been characterized for their UV-visible absorption as well as Raman activity. We demonstrate potential uses of these functionalized textiles through two proof-of-concept applications. The first entails barcoding cotton using the unique Raman signature of the NWs. We also demonstrate the surface-enhancement of their Raman signatures using codeposited Au. A second demonstration takes advantage of the photoconductive nature of semiconductor NWs to create cotton-based photodetectors. Apart from these illustrations, NW-functionalized cotton textiles may possess other uses in the realm of medical, anticounterfeiting, and photocatalytic applications.
我们展示了使用溶液合成的 CdSe 和 CdTe 纳米线（NWs）对棉织物的一般功能化。通过各种物理和化学方法实现了对单个棉纤维的保形涂层。有些方法涉及到 NWs 与用范德格拉夫发电机或通过 2,3-环氧丙基三甲基氯化铵处理带正电荷的棉之间的静电吸引。所得的 NW 功能化纺织品由密集的保形涂层组成，并对其 UV-可见吸收和拉曼活性进行了表征。我们通过两个概念验证应用演示了这些功能化纺织品的潜在用途。第一个应用涉及使用 NW 的独特拉曼特征对棉花进行编码。我们还展示了使用共沉积 Au 对其拉曼特征进行表面增强的效果。第二个演示利用半导体 NW 的光电导性质来创建基于棉的光电探测器。除了这些说明之外，NW 功能化的棉纺织品在医疗、防伪和光催化应用领域可能还有其他用途。
