Diletto Claudia, Morvillo Pasquale, Di Girolamo Rocco, Auriemma Finizia, De Rosa Claudio
Department of Chemical Sciences, University of Napoli "Federico II," Complesso Universitario Monte S. Angelo, via Cintia, 80126 Napoli, Italy.
J Nanosci Nanotechnol. 2013 Jul;13(7):5215-20. doi: 10.1166/jnn.2013.7504.
Innovative hybrid nanocomposites based on a nanostructured block copolymer (BCP) matrix whose lamellar nanodomains are selectively loaded with metal nanoparticles, have been prepared. A symmetric poly(styrene-b-methylmethacrylate) (PS-b-PMMA) amorphous BCP showing a lamellar morphology has been employed. Thin films of PS-b-PMMA were deposited by spin-coating or drop casting on indium thin oxide (ITO) substrate in order to achieve orientation of lamellae with the lamellar surface perpendicular to the substrate. The perpendicular orientation is related to the use of ITO substrate, which shows a neutral surface with non-preferential interactions with the PS and PMMA domains. Hybrid nanocomposites have been then prepared by selective incorporation of gold nanoparticles into the PS lamellar domain by using a simple method based on the selective deposition of thermally evaporated gold nanoparticles. This innovative approach can be very useful for the realization of nanocomposites that could be used as active layer in non-volatile OFET memory devices or very efficient organic solar cells, depending on the appropriate guest molecules.
已制备出基于纳米结构嵌段共聚物（BCP）基质的创新型杂化纳米复合材料，其层状纳米域中选择性地负载了金属纳米颗粒。使用了一种呈现层状形态的对称聚（苯乙烯 - b - 甲基丙烯酸甲酯）（PS - b - PMMA）无定形BCP。通过旋涂或滴铸将PS - b - PMMA薄膜沉积在氧化铟锡（ITO）基板上，以使层状结构的层表面垂直于基板，从而实现层状结构的取向。这种垂直取向与ITO基板的使用有关，ITO基板表面呈中性，与PS和PMMA域没有优先相互作用。然后，通过基于热蒸发金纳米颗粒的选择性沉积的简单方法，将金纳米颗粒选择性地掺入PS层状域中，制备出杂化纳米复合材料。根据合适的客体分子，这种创新方法对于实现可用于非易失性有机场效应晶体管（OFET）存储器件的有源层或非常高效的有机太阳能电池的纳米复合材料可能非常有用。
