phthalocyanine
/ˌ(f)θaləʊˈsʌɪəniːn
/noun [mass noun] Chemistry
1A greenish-blue crystalline dye of the porphyrin group.
- Chemical formula: C32H18N8.
- This spectrum clearly indicates efficient singlet-singlet energy transfer from carotenoid to phthalocyanine.
- By attaching differing substituent groups, some of which are water soluble and some of which are fat soluble, an unsymmetrically substituted phthalocyanine is created which is both water and fat soluble.
1.1 [count noun] Any of a large class of green or blue pigments and dyes which are chelate complexes of phthalocyanine or one of its derivatives with a metal (in particular, copper): [as modifier]: phthalocyanine blue...
- Among the aluminum phthalocyanines, the hydrophilic tetrasulfonated derivative is localized in the vascular stroma and induces tumor regression by the indirect mechanism of vascular destruction.
- The suppression of the photodynamic potency of aluminum phthalocyanines was attributed to desorption of the dyes from lipid bilayers induced by fluoride or hydroxyl ions.
- It was found that a combination of cobalt or iron phthalocyanine and sodium ascorbate has high in vitro and in vivo antitumor activity.
Origin
1930s: from phthalic (see phthalic acid) + Greek kuan(e)os 'dark blue' + -ine4.