| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition containing a photosensitizer excellent in preservation stability and high in sensitivity to laser beams of long wavelength by containing a specific dipyrromethene boron complex as the photosensitizer. SOLUTION: This composition contains a dipyrromethene boron complex expressed by a formula, as a photosensitizer. This photosensitizer is excited by absorbing light in a visible light area of 400-700 nm, particularly 400-600 nm, and interacts with resin and a photo-acid generating agent. In the formula, R1-R7 independently represent hydrogen atom, halogen atom, nitro group, cyano group, hydroxy group, amino group, carboxyl group, sulfonic acid group, alkyl group, halogenoalkyl group, alokoxyalkyl group or the like; R4 represents hydrogen atom, cyano group, alkyl group, aralkyl group, aryl group, heteroaryl group or the like; R8 represents alkyl group, aryl group or aralkyl group; and R9 represents halogen atom, alkoxy group, aryloxy group or the like. |
