| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fullerene derivative which has solubility with an ester solvent and solubility with an alkali solvent and is easily produced only from inexpensive raw materials, and to provide a solution and a film of the fullerene derivative. <P>SOLUTION: The fullerene derivative is expressed by formula (I). In the formula, R1 represents an aromatic hydrocarbon group having 6 to 18 carbon atoms, which includes 1 to 3 hydroxyl groups and may include a substituent except for a hydroxyl group; a represents an average addition number of R<SP POS="POST">1</SP>and is 1 or more and 15 or less; b represents an average addition number of hydrogen atoms (H) and is 0 or more and 4 or less, satisfying a>b; and a structure represented by a circle represents a fullerene skeleton. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
