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 (thăl′ō-sī′ə-nēn′, fthăl′-)
A stable blue-green porphyrin-based organic dye, C32H18N8, or any of several blue-green derivatives containing chelated metals, used in enamels, printing inks, linoleum, and plastics.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌθæləʊˈsaɪəˌniːn; ˌθeɪ-; ˌfθæl-) or


1. (Elements & Compounds) a cyclic blue-green organic pigment. Formula: (C6H4C2N)4N4H4
2. (Elements & Compounds) any of a class of compounds derived by coordination of this compound with a metal atom. They are blue or green pigments used in printing inks, plastics, and enamels
[C20: from phthal- (see phthalein) + cyanine]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌθæl əˈsaɪ əˌnin, -nɪn, ˌfθæl-)

any of a group of blue-green pigments, esp. C32H18N8 (metal-free phthalocyanine), used to make enamels, printing inks, and automotive finishes.
[1930–35; (na)phthal(ene) + -o- + cyanine]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive ?
Phthalocyanines are PSs derived from synthetic porphyrins of high quantic yield and absorption in the red electromagnetic region (600-800 nm), which corresponds to the therapeutic range of PDT (11,12); for instance, tetrasulphonate aluminum phthalocyanine is the active principle of Photosens[R] (State Research Center of Organic Intermediates and Dyes, Russia) used in the treatment of some types of cancer (13).
Types of pigments: Blues (phthalocyanine, triarylcarbonium); Greens (phthalocyanine, chromium); Reds (naphtol, quinacridone, BONA, triarylcarbonium, perylene, anthraquinone, benzimidazolone, DPP); Specialty (pearlescent); Yellow and oranges (monoazo, diarylide, isoindolinone, benzimidazolone, isacetoacetarylide, quinophthalone, lead Chromate, orange: naphthol, disazopryazalone, diarylide, benzimidazolone, perinone, azoheterocyclues, DPP)
DIC Graphics' Karawang Plant, which is engaged primarily in the production of phthalocyanine blue pigments.
This theory was proven by Vrouenraets et al., where the PS aluminium (III) phthalocyanine tetrasulfonate [AlPc(SO3H)4] a hydrophilic compound was used.
Phthalocyanines (Pcs) have highly coplanar 18 electronic [pi]-bonded conjugate structures and can react with a number of metal ions to form metal phthalocyanine (MPcs), as shown in Figure 2.
The molecule is a symmetric tetra-n-butoxy-substituted zinc phthalocyanine, hereinafter named [(n-BuO).sub.4]ZnPc.
Photosensitizers that are currently being studied in fighting these microbes include porphyrins, phenothiazines, and phthalocyanine [7].
Aluminum phthalocyanine chloride (AlPcCl) is a second-generation photosensitizing agent with potent antitumor action and high affinity to cancer tissues [3].
Kobayashi, Nonomura and Nakai [4] used DCP as precursor to synthetize new precursors of a seven-membered carbon-ring-fused phthalocyanine analogues.
After making colored opaque pigments by using copper phthalocyanine blue pigment, the [L.sup.*][a.sup.*][b.sup.*] values were evaluated for two levels of pigment addition.