Laboratorio di Scienza dei Materiali e Nanotecnologie (LMNT), CR-INSTM, CNBS, Università di Sassari, Palazzo Pou Salid Piazza Duomo 6, 07041 Alghero SS, Italy.
Nanoscale. 2011 Sep 1;3(9):3760-6. doi: 10.1039/c1nr10404g. Epub 2011 Aug 8.
Mesoporous nanocomposite materials have been fabricated through integration of evaporation-induced self-assembly and deep X-ray lithography. Micropatterned films made using a mesoporous ordered silica matrix which contains silver nanoparticles have been obtained. The exposure of the mesoporous films to high energy X-rays, which are generated by a synchrotron source, produces several effects: the removal of the surfactant, the densification of the silica backbone and the formation of silver nanoparticles. This integrated process produces a nanocomposite material which has a 2D-hexagonal organized porosity and silver nanoparticles with a sharp size distribution around 5 nm. The patterned nanostructured films have been tested as a lab-on-chip device for intrinsic surface enhanced Raman scattering detection using a solution containing rhodamine 6G in ethanol and measuring Raman response as a function of laser power.
介孔纳米复合材料是通过蒸发诱导自组装和深 X 射线光刻技术的集成制备而成。使用含有银纳米粒子的介孔有序硅基质制备了微图案化薄膜。介孔薄膜暴露于同步辐射源产生的高能 X 射线会产生多种效应：去除表面活性剂、硅骨架致密化和银纳米粒子的形成。这种集成过程产生了一种纳米复合材料，具有 2D 六方有序孔隙率和粒径分布在 5nm 左右的尖锐银纳米粒子。使用含有乙醇中的罗丹明 6G 的溶液作为芯片实验室设备，通过测量拉曼响应作为激光功率的函数，对图案化纳米结构薄膜进行了固有表面增强拉曼散射检测的测试。
