Triphenylmethane Triphenylmethyl group

Scheme 5.2 Photogeneration of triphenylmethyl cations in poly(N,N-dimethylacrylamide) containing pendant triphenylmethane leucohydroxide groups.

Organometallic tr complexes having hydrogen ona. p carbon commonly react with triphenylmethyl (or trityl) cation. While main-group alkyls fragment to alkene, metal cation and triphenylmethane, comparable transition-metal derivatives produce rearranged cationic olefin n complexes and triphenylmethane ... [Pg.9]

The type (4) employs an electrostatic force of repulsion between photogenerated charges as a driving force of a conformational change. Triphenylmethane leucoderivatives have been used as photoreceptor molecules in order to produce positive charges in the pendant groups of polymers.The chromophore dissociates into an ion-pair under ultraviolet irradiation with production of an intensely colored triphenylmethyl cation. The cation thermally recombines with the counter anion as follows. [Pg.276]