| abstract |
A water-repellent porous silica having uniform pores, characterized in that it comprises a silica skeleton having a fluorine atom being fixed thereto through a covalent bond and has an alkali metal content of 10 ppb or less; a film comprising the water-repellent porous silica having uniform pores; and a method for preparing the film and a use of the film. The film can be suitably used as an optical functional material and an electronic functional material. |