Author/Authors :
Maruo، نويسنده , , Takanori and Tanaka، نويسنده , , Shunsuke and Nishiyama، نويسنده , , Norikazu and Motoda، نويسنده , , Ken-ichiro and Funayama، نويسنده , , Katsuya and Egashira، نويسنده , , Yasuyuki and Ueyama، نويسنده , , Korekazu Ueyama، نويسنده ,
Abstract :
Spin-on mesostructured films were prepared from tetraethoxysilane (TEOS) as a silica source and nonionic triblock copolymer Pluronic F127 as a templating agent. The films were treated with trimethylethoxysilane (TMES) vapor before and/or after calcination. The porosity of the calcined films was increased with a rise of the molar ratio of F127/TEOS in the precursor solutions. The TMES vapor treatments reduced refractive index of the mesoporous silica films to 1.23 and effectively improved their mechanical strength.
