1-Ethyl-3-methylimidazolium dicyanamide EMImN(CN)2 and S-ethyltetrahydrothiophene dicyanamide EThN(CN)2 physically confined into mesoporous silica gel with pore sizes of 6–8 nm (IL-sg) were synthesized according to a proper sol–gel process. Greatly enhanced fluorescence emissions of dicyanamide based ILs after being confined were exhibited.

★★★☆☆ Zhang J,Zhang QH,Shi F,et al. Greatly Enhanced Fluorescence Of Dicyanamide Anion Based Ionic Liquids Confined Into Mesoporous Silica Gel[J]. Chemical Physics Letters,2008,461:229-234.