abstract |
The present invention relates to a compound of formula AXB wherein (i) AXB is an ionic compound Ai Xi Bi wherein Ai and Bi are each independently an organic onium cation and Xi is an anion of formula QR 500 -SO 3 ) formation, or (ii) AXB is of a non-ionic compound Ac-Xc-Bc (expression, Ai, Bi, Q, R 500, Ac, Bc, and Xc forms a defined herein). These compounds are useful as photoactive materials. |