To improve the dispersibility of single walled carbon nanotube (SWCNT) in common organic solvents and adjust its photoelectronic performance, two methacrylate-co-porphyrins covalently functionalized SWCNT nanohybrids (SWCNT-TPP 1 and SWCNT-TPP 2) were prepared by radical polymerization. This attachment of porphyrins onto the surface of SWCNT significantly improves their solubility and dispersion stability of the SWCNT-based materials in organic solvents. The electronic interactions between porphyrins and SWCNT were investigated by the UV–vis, fluorescence and Raman spectroscopic methods. Z-scan measurements suggested that both nanohybrids exhibited increased nonlinear absorption and optical limiting performances compared to the separate SWCNT and porphyrins, which can be ascribed to the synergetic effects originating from the charge transfer effect between the two counterparts. The best optical limiting performance is observed for SWCNT-TPP 1 due to more effective charge transfer effect in comparison with those of other samples. These results suggest that the radical polymerization is a useful approach towards the rational design of solution-processible yet stable optical limiting materials, and this concept may be readily extended to other directional optoelectronic properties.

为了提高单壁碳纳米管（SWCNT）在常见有机溶剂中的分散性并调节其光电性能，两个甲基丙烯酸酯-共卟啉共价官能化了SWCNT纳米杂化物（SWCNT-TPP 1和SWCNT-TPP 2）是通过自由基聚合制备的。卟啉在SWCNT表面上的这种附着显着提高了SWCNT基材料在有机溶剂中的溶解度和分散稳定性。通过紫外可见，荧光和拉曼光谱法研究了卟啉与SWCNT之间的电子相互作用。Z扫描测量结果表明，与单独的SWCNT和卟啉相比，两种纳米杂化物均表现出更高的非线性吸收和光学限制性能，这可以归因于两个对应物之间的电荷转移效应所产生的协同效应。观察到SWCNT-TPP 1的最佳光学限制性能与其他样品相比，具有更有效的电荷转移效果。这些结果表明，自由基聚合是一种合理设计可溶液加工但稳定的光学限制材料的有用方法，并且该概念可以很容易地扩展到其他方向性光电性能。