Effect of crystal form on the conductance in NO2of metal-free and copper-phthalocyanine
β Scribed by Y. Sadaoka; T. A. Jones; W. Gopel
- Publisher
- Springer
- Year
- 1989
- Tongue
- English
- Weight
- 307 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0261-8028
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π SIMILAR VOLUMES
Copper phthalocyanines are commercially important organic pigments for blue shades of colour. They are dispersed by mechanical means as tiny molecular crystals (of dimensions 0.02-0.5 mm) into a wide range of commercial media to form products such as printing inks, paints and coloured plastics. Many
Four non-peripheral alkyloxy substituted metal-free phthalocyanines have been synthesized and characterized with X-ray crystal structure, IR, UV-vis and 1 H NMR. It is found that the center caves of Pc skeletons were expanded but their ring currents were reduced by the introduction of alkyloxy subst
## Abstract The effect of substituents on the position and intensity of the electronic absorption and fluorescence spectra of phthalocyanines (Pcs) was examined for 35 Pc compounds. When electronβreleasing groups are bound to four __Ξ±__βbenzo positions of the Pc skeleton, the B and Q bands shift to