Definition of phthalocyanine in English:


Line breaks: phthalo|cyan¦ine
Pronunciation: /ˌ(f)θaləʊˈsʌɪəniːn


[mass noun] Chemistry
  • 1A greenish-blue crystalline dye of the porphyrin group.
    • Chemical formula: C32H18N8
    More example sentences
    • In general, these newer drugs have been based on the structure of chlorin, purpurin, phthalocyanine or naphthalocyanine.
    • 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
    More example sentences
    • 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.


1930s: from phthalic (see phthalic acid) + Greek kuan(e)os 'dark blue' + -ine4.

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