Adsorption and aggregation of a cationic cyanine dye on layered clay minerals

Nobuyoshi Miyamoto, Ryo Kawai, Kazuyuki Kuroda, Makoto Ogawa

    Research output: Contribution to journalArticle

    84 Citations (Scopus)

    Abstract

    The adsorption and aggregation of a cationic cyanine dye, 1,1'-diethyl-2,2'-cyanine (pseudoisocyanine; abbreviated as PIC), on various clays have been investigated. The PIC formed J-aggregates on Na-montmorillonite and synthetic Na-fluor-tetrasilicic mica (TSM), while they distributed molecularly on synthetic Na-saponite and synthetic Na-hectorites. The particle size of the clays was considered to be a dominant factor to control the aggregation of PIC. The J-aggregate formation was suppressed when tetramethylammonium-montmorillonite was employed as a host material. Ethylene glycol in the suspension was also responsible for the suppression of J-aggregate formation of PIC. Thus, the aggregation of PIC was effectively controlled by the species surrounding the PIC cations as well as the nature of clays. (C) 2000 Elsevier Science B.V. All rights reserved.

    Original languageEnglish
    Pages (from-to)161-170
    Number of pages10
    JournalApplied Clay Science
    Volume16
    Issue number3-4
    DOIs
    Publication statusPublished - 2000 Mar

    Fingerprint

    Clay minerals
    Bentonite
    clay mineral
    dye
    Coloring Agents
    Agglomeration
    adsorption
    montmorillonite
    Adsorption
    clay
    hectorite
    saponite
    Ethylene Glycol
    mica
    ethylene
    Cations
    Suspensions
    cation
    Particle size
    particle size

    Keywords

    • Clay minerals
    • Cyanine dye
    • Ethylene glycol
    • J-aggregate
    • Tetramethylammonium

    ASJC Scopus subject areas

    • Geochemistry and Petrology
    • Geology

    Cite this

    Adsorption and aggregation of a cationic cyanine dye on layered clay minerals. / Miyamoto, Nobuyoshi; Kawai, Ryo; Kuroda, Kazuyuki; Ogawa, Makoto.

    In: Applied Clay Science, Vol. 16, No. 3-4, 03.2000, p. 161-170.

    Research output: Contribution to journalArticle

    Miyamoto, Nobuyoshi ; Kawai, Ryo ; Kuroda, Kazuyuki ; Ogawa, Makoto. / Adsorption and aggregation of a cationic cyanine dye on layered clay minerals. In: Applied Clay Science. 2000 ; Vol. 16, No. 3-4. pp. 161-170.
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