Process for producing chemical adsorption film and chemical adsorption film
The process for forming a chemical adsorption film of the present invention includes a hydrophilic treatment step ST 1 of making the surface of the material hydrophilic, a treatment step ST 2 of adhering an acid or a base onto the surface of the base material which is made hydrophilic, and a film forming step ST 3 of contacting the surface of the base material on which an acid or a base is adhered with a chemical adsorbent to form a chemical adsorption film on the surface.
1. A process for forming a chemical adsorption film on a surface of a base material, comprising:
a hydrophilic treatment to the surface of the base material;
after the hydrophilic treatment, a treatment step of applying an acid or a base onto the surface of the base material; and
a film forming step of contacting the base material, after the treatment step, with a chemical adsorbent to apply the chemical adsorbent onto the surface of the base material, while maintaining the acid or the base evenly on the surface of the base material, wherein
the acid is selected from the group consisting of hydrochloric acid, phosphoric acid, and acetic acid, and
the base is selected from the group consisting of sodium hydroxide, potassium hydroxide, and calcium hydroxide.
2. A process for forming a chemical adsorption film as set forth in claim 1 , wherein the film forming step is a step of immersing the base material in a chemical adsorbent solution.
3. A process for forming a chemical adsorption film as set forth in claim 1 , wherein the film forming step is a step of contacting the surface of the base material with a vapor of the chemical adsorbent.
4. A process for forming a chemical adsorption film as set forth in claim 1 , wherein the base material has a hydrophilic group on the surface thereof, and the chemical adsorbent has a functional group which is reactive with hydrophilic groups on end thereof.
5. A process for forming a chemical adsorption film as set forth in claim 4 , wherein the chemical adsorbent has one or more selected from the group consisting of a silyl group (—SiX), a titanyl group (—TiX), and a stannyl group (—SnX) (in the formulae, X represents a halogen or an alkoxy group) on an end of a molecule thereof.
6. A process for forming a chemical adsorption film as set forth in claim 1 , wherein the treatment step is a step of supplying a solution of the acid or the base onto the surface of the base material.
7. A process for forming a chemical adsorption film as set forth in claim 2 , wherein the base material has a hydrophilic group on the surface thereof, and the chemical adsorbent has a functional group which is reactive with hydrophilic groups on end thereof.
8. A process for forming a chemical adsorption film as set forth in claim 3 , wherein the base material has a hydrophilic group on the surface thereof, and the chemical adsorbent has a functional group which is reactive with hydrophilic groups on end thereof.
9. A process for forming a chemical adsorption film as set forth in claim 1 , wherein
in the film forming step, a promotion of hydrolysis of the chemical adsorbent by the acid or the base is caused on the surface of the base material.