Tuning of phthalocyanine absorption ranges by additional substituents

A new phthalonitrile derivative with two different substituents on 4- and 5-positions has been synthesized and its cyclotetramerization in the presence of anhydrous metal salts without any solvent resulted with phthalocyanines ( 4– 6) containing a hexylthio group and malonylester on each benzo unit....

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Bibliographic Details
Published in:Dyes and pigments 2007, Vol.74 (3), p.545-550
Main Authors: Dinçer, Hatice A., Gül, Ahmet, Koçak, Makbule B.
Format: Article
Language:English
Subjects:
Cobalt
Copper
Phthalocyanine
Phthalonitrile
Transesterification
Zinc
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Summary:A new phthalonitrile derivative with two different substituents on 4- and 5-positions has been synthesized and its cyclotetramerization in the presence of anhydrous metal salts without any solvent resulted with phthalocyanines ( 4– 6) containing a hexylthio group and malonylester on each benzo unit. When phthalocyanine formation was carried out in high-boiling alcohols in the presence of a base transesterification of malonyl esters gave products with enhanced solubility in apolar solvents. These new compounds have been characterized by 1H NMR, FT-IR, UV–vis and mass spectroscopies.
ISSN:0143-7208
1873-3743
DOI:10.1016/j.dyepig.2006.03.013