2.4. Preparation of organic-inorganic hybrid mesoporous silica thin films

Typical synthesis of the hybrid mesoporous organic-inorganic silica thin film (HMSTF) was performed as follow [36]. 60 mg of CTAB and 250 μL of NaOH (0.1 M) were added in 30 mL of deionized water. Then TNT with titanium holder was put in the round bottom flask. After stirring for 1 h at room temperature, 3 mL of cyclohexane containing 40 μL of silane precursors (V_BTSE/V_TEOS = 1/0, 3/1, 1/1, 1/3) was added dropwise and continued to react for another 4 h. Finally, the obtained product was washed three times with water, and immersed in 50 mL of NH₄NO₃ ethanol solution (0.2 wt%) and heated at 60 °C for 2 h to remove the template CTAB. This step was repeated for 3 times and HMSTF@TNT was obtained.