Phtalocyanine dyes

Fig. 3.153. The proposed degradation pathway for copper phtalocyanine dyes using P. chrysosporum (white-rot fungi). Reprinted with permission from A. Conneely el al. [194].

The synthesis of phtalocyanine dyes was followed by CE and the purity and composition of the end product was investigated by the same method. The chemical structure of the newly synthetized zinc phtalocyanine tetrasulphonic acid is shown in Fig. 3.163. An uncoated fused silica capillary (65cm X 75 /.an i.d.) was employed for the separation of dye components. Running buffers were 10 mM ammonium acetate (pH adjusted to 9.4 with ammonia) and 10 mM potassium dihydrogenphosphate (KH2P04) (pH = 9.0). Samples were injected hydrodynamically (50 mm for 10 s). Separation was realized in the constant current mode at 30 pA, which required about 28 kV separation voltage. Analytes... 

A. Heinfling-Weidtmann, T. Remtsma, T. Storm and U. Szewczik, Sulfophtalimide as major metabolite formed from sulfonated phtalocyanin dyes by white-rot fungus Bjerkandera adusta. FEMS Microbiol. Lett., 203 (2001) 179-183. 

A. Conneely, W.F. Smyth and G. McMullan, Study of the white-rot fungal degradation of selected phtalocyanine dyes by capillary electrophoresis and liquid chromatography. Anal. 

J. Schoefield and M. Asaf, Analysis of sulphonated phtalocyanine dyes by capillary electrophoresis. J. Chromatogr.A, 770 (1997) 345-348. 

Disperse blue 124 is a textile dye responsible for occupational contact dermatitis in the textile industry. A positive patch-test reaction was observed in a painter sensitized to phtalocyanine dyes, with no occupational relevance. 

While screening a larger number of dyes (e.g., Ni-phtalocyanine, fluoresceine, rhodamine B, methylene hlue, bromothymol blue, zinkone) for their function in standardized nanocrystalline dye sensitized cells, the work concentrated on the 6 best performing complexes. They were ... 

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