SOLVENT AND METHOD OF FORMING ORGANIC FILM USING SOLVENT
In a first aspect of a present inventive subject matter, a solvent contains a nonpolar solvent containing an aromatic compound and a polar solvent that is an aprotic polar solvent. The ratio of the nonpolar solvent to the polar solvent by volume ratio is 5:1 to 1:1.
1 . A solvent comprising:
a nonpolar solvent comprising an aromatic compound; and
a polar solvent that is an aprotic polar solvent,
the ratio of the nonpolar solvent to the polar solvent by volume ratio being 5:1 to 1:1.
2 . The solvent of claim 1 , wherein
the aromatic compound comprised in the nonpolar solvent is represented by Chemical Formula (1),
in the Chemical Formula (1), wherein
R 1 , R 2 , R 3 , R 4 , R 5 and R 6 each represent a hydrogen atom or an optionally substituted hydrocarbon group.
3 . The solvent of claim 2 , wherein
two selected from among R 1 , R 2 , R 3 , R 4 , R 5 and R 6 in the Chemical Formula (1) are taken together to form a ring.
4 . The solvent of claim 1 , wherein
the aprotic polar solvent is an amide solvent.
5 . The solvent of claim 1 , wherein
the polar solvent has a boiling point that is higher than a boiling point of the nonpolar solvent by 50° C. or higher.
6 . The solvent of claim 1 , wherein
the ratio of the nonpolar solvent to the polar solvent by volume ratio is 4:1 to 7:3.
7 . A chemical composition comprising:
the solvent of claim 1 ; and
an organic compound.
8 . The chemical composition of claim 7 , wherein
the organic compound is a cyclic compound.
9 . The chemical composition of claim 7 , wherein
the organic compound is without a polar group.
10 . The chemical composition of claim 7 , wherein
the organic compound has a solubility that is less than 1.0 mg/mL to the polar solvent at a temperature of 25° C.
11 . A solvent comprising:
a nonpolar solvent comprises an aromatic compound; and
a polar solvent that is an aprotic polar solvent,
the ratio of the nonpolar solvent to the polar solvent by volume ratio being 4:1 to 7:3.
12 . The solvent of claim 11 , wherein
the aromatic compound comprised in the nonpolar solvent is represented by Chemical Formula (1),
in the Chemical Formula (1), wherein
R 1 , R 2 , R 3 , R 4 , R 5 and R 6 each represent a hydrogen atom or an optionally substituted hydrocarbon group.
13 . The solvent of claim 12 , wherein
two selected from among R 1 , R 2 , R 3 , R 4 , R 5 and R 6 in the Chemical Formula (1) are taken together to form a ring.
14 . The solvent of claim 11 , wherein
the aprotic polar solvent is an amide solvent.
15 . The solvent of claim 11 , wherein
the polar solvent has a boiling point that is higher than a boiling point of the nonpolar solvent by 50° C. or higher.
16 . A chemical composition comprising:
the solvent of claim 11 ; and
an organic compound.
17 . The chemical composition of claim 16 , wherein
the organic compound is a cyclic compound.
18 . The chemical composition of claim 16 , wherein
the organic compound is without a polar group.
19 . The chemical composition of claim 16 , wherein
the organic compound has a solubility that is less than 1.0 mg/mL to the polar solvent at a temperature of 25° C.
20 . A method of forming an organic film comprising:
preparing a raw material solution comprising a solvent and an organic compound, the solvent comprising a nonpolar solvent that comprises an aromatic compound and a polar solvent that is an aprotic polar solvent;
turning the raw material solution into atomized droplets;
carrying the atomized droplets onto the base; and
causing thermal reaction of the atomized droplets adjacent to the base to form an organic film.
21 . The method of claim 20 , wherein
the turning the raw material solution into atomized droplets is done by using ultrasonic vibration.
22 . The method of claim 20 , wherein
the base comprises at least one layer.