Supramolecular architecture,spectroscopic properties and stability of C.I.Basic Violet 10(Rhodamine B)at high concentration

摘要

The self-assembly behavior,spectroscopic properties and stability of C.I.Basic Violet 10(Rhodamine B)were investigated at a relatively high concentration.Rod-like dye nanocrystals could be formed by tuning various THF/H2O volume ratios,leading to increased fluorescence intensity.TEM,zeta-potential measurement and selected-area electron diffraction patterns indicated that the dye nanorods were successfully encapsulated within a silica layer using a sol-gel process.The ensuing silica-coated,dye nanorods exhibited increased fluorescence intensity,non-leachability in polar solvents and high photostability.