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合成了具有规整六方棱柱形貌的大孔笼型介孔硅,通过液相自组装的方法将共轭聚合物链填入孔中,制备了无机介孔硅-共轭聚合物的纳米复合物.并利用SEM,TEM,XRD以及N2吸附等测试表征了介孔硅和复合物.通过研究这种介孔硅负载长链共轭聚合物的UV-vis光谱、PL光谱以及发光动力学,证明了聚合物链的聚集作用受到强烈的抑制而链活动能力减弱,链间激子的能量分布变窄;链间激子在介孔受限环境中寿命延长.激光扫描共聚焦显微镜研究发现复合物硅微粒的发光强度比聚合物聚集体的发光强度高20倍以上.纳米复合物在高温下仍然保持较高的发光强度,有效的减少了酮缺陷的产生.光稳定性测试表明该纳米复合物还具有较高的抗光氧化能力.
The mesoporous silica with regular hexagonal prismatic morphology was synthesized and the conjugated polymer chains were filled into the pores by liquid-phase self-assembly to prepare nanocomposites of inorganic mesoporous Si-conjugated polymers The mesoporous silicon and its composites were characterized by SEM, TEM, XRD and N2 adsorption.The UV-vis, PL spectra and luminescence kinetics of the mesoporous silica supported long chain conjugated polymer The aggregation of the polymer chain is strongly inhibited and the activity of the chain is weakened, and the energy distribution of the excitons in the chain is narrowed; the prolongation of the lifetime of the excitons in the mesoporous environment is prolonged. Laser scanning confocal microscopy shows that the complex The luminescent intensity of silica particles is more than 20 times higher than the luminescence intensity of polymer aggregates.Nanocomposites still maintain high luminescence intensity at high temperature and effectively reduce the generation of ketone defects.The light stability test shows that the nanocomposite Also has a high resistance to light oxidation.