| 摘要 |
PROBLEM TO BE SOLVED: To provide a new squarylium bye derivative having a high thermal stability and vapor deposition characteristic, and its production method. SOLUTION: The new squarylium compound is represented by general formula (1). [In general formula (1), R1 and R2 are the same as or different from each other. If the same, each one shows an ethyl group, a n-propyl group or a branched 3-7C alkyl group. If different, each one independently shows an ethyl group, a n-propyl group, a n-butyl group, a n-pentyl group or a branched 3-7C alkyl group]. |
