| 摘要 |
Infrared radiation-sensitive heterocyclic oxonol compounds have been found that are represented by Structure DYE as follows:wherein R is a secondary or tertiary amine, R1 and R2 are independently heterocyclic or carbocyclic aromatic groups, and M+ is a monovalent cation, provided that at least one of R, R1 and R2 contains at least one heterocyclic group. These compounds have a lambdmax above 700 nm and are can be used in a number of photosensitive or heat-sensitive imaging materials.
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