Mesostructured thin film, mesoporous thin film, and process for production thereof

Abstract

An excellent mesostructured thin film, and a process for producing the mesostructured thin film are provided. In the process, the mesostructured thin film having an oriented rod-like pore structure is formed on a surface of a polymer compound containing a sequence of two or more adjacent methylene groups in the repeating unit of the molecule.

1 . A process for producing a mesostructured film having an uniaxially oriented rod-shaped pore structure, comprising the step of forming the mesostructured film on a polymer compound containing a sequence of two or more adjacent methylene groups in a molecular structure of the repeating unit of the polymer compound, wherein the surface of the polymer compound is uniaxially oriented.  
   
   
       2 . The process for producing a mesostructured film according to  claim 1 , wherein the process comprises the step of preparing the polymer compound.  
   
   
       3 . The process for producing a mesostructured film according to  claim 2 , wherein the step of preparing the polymer compound is the step of forming a film of the polymer compound on a base plate.  
   
   
       4 . The process for producing a mesostructured film according to  claim 2 , wherein the step of preparing the polymer compound is the step of forming a Langmuir-Blodgett film as the film of the polymer compound.  
   
   
       5 . The process for producing a mesostructured film according to  claim 1 , wherein the mesostructured film contains silicon.  
   
   
       6 . The process for producing a mesostructured film according to  claim 5 , wherein the mesostructured film contains silica.  
   
   
       7 . The process for producing a mesostructured film according to  claim 1 , wherein the mesostructured film is formed by hydrolyzing a silicon alkoxide.  
   
   
       8 . The process for producing a mesostructured film according to  claim 1 , wherein the mesostructured film is formed by hydrolysis reaction in the presence of a surfactant.  
   
   
       9 . The process for producing a mesostructured film according to  claim 8 , wherein the surfactant is a quaternary alkylammonium salt.  
   
   
       10 . The process for producing a mesostructured film according to  claim 8 , wherein the surfactant contains a polyethylene oxide as the hydrophilic group.  
   
   
       11 . The process for producing a mesostructured film according to  claim 8 , further comprising the step of removing the surfactant after forming the mesostructured film.  
   
   
       12 . The process for producing a mesostructured film according to  claim 11 , wherein the step of removing the surfactant is the step of baking the mesostructured film.  
   
   
       13 . The process for producing a mesostructured film according to  claim 11 , wherein the step of removing the surfactant is the step of removing the surfactant by solvent-extraction.  
   
   
       14 . The process for producing a mesostructured film according to  claim 1 , wherein the mesostructured film is formed by hydrolysis reaction under an acidic condition.  
   
   
       15 . The process for producing a mesostructured film according to  claim 1 , wherein the mesostructured film is formed by bringing a solution containing a material for the mesostructured film into contact with a surface of the polymer compound.  
   
   
       16 . The process for producing a mesostructured film according to  claim 1 , wherein the number of a sequence of adjacent methylene groups in the repeating unit of the polymer compound ranges from 2 to 20.  
   
   
       17 . The process for producing a mesostructured film according to  claim 1 , wherein the sequence of adjacent methylene groups in the repeating unit of the polymer compound is contained in the main chain of the polymer compound.  
   
   
       18 . The process for producing a mesostructured film according to  claim 1 , wherein the sequence of adjacent methylene groups in the repeating unit of the polymer compound is contained in the side chain of the polymer compound.