| 摘要 |
Novel pyrrolo¢3,4-c!pyrroles Pyrrolo¢3,4-c!pyrroles of formula <IMG> (I), wherein D and E are each independently of the other a group of formula <IMG> (II), <IMG> (III) or <IMG> (IV), The symbols Q, R8, R9, R10, R11, X, Y, Z, m and n are as defined in claim 1. These pyrrolo¢3,4-c!pyrroles are distinguished by outstanding solid state fluorescence in the UV range as well as by the ease with which they can be converted to pyrrolopyrrole pigments even in the substrate in which they are incorporated.
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