Effective inclusion of chlorophyllous pigments into mesoporous silica modified with α,ω-diols

S. Murata, H. Furukawa, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    41 Citations (Scopus)

    Abstract

    FSM-type mesoporous silica modified with various diols was utilized as an inorganic medium for immobilizing chlorophyll a (Chl a) without denaturation. The energy transfer from Chl b to Chl a in the mesopores was also observed for the first time. Silanol groups on the mesoporous silica were esterified with diols, and this was confirmed by 13C MAS NMR, IR, N2 adsorption, and elemental analysis. The suppression of the pigment degradation in modified FSM was confirmed by both visible absorption spectroscopy of the FSM/Chl compounds and the analysis of the extracts from FSM/Chl by high-performance liquid chromatography. The fluorescence emission bands of Chl a and Chl b in FSM modified with 1,6-hexanediol appeared at 672 and 654 nm, respectively. In the FSM/Chl containing both Chl a and Chl b, the emission band due to Chl b was decreased whereas the band due to Chl a was increased. This is in sharp contrast to the emission spectrum of an acetone solution containing both of Chls, implying energy transfer from Chl b to Chl a in modified mesoporous silica.

    Original languageEnglish
    Pages (from-to)2722-2729
    Number of pages8
    JournalChemistry of Materials
    Volume13
    Issue number8
    DOIs
    Publication statusPublished - 2001

    Fingerprint

    Chlorophyll
    Pigments
    Silicon Dioxide
    Silica
    Energy transfer
    Denaturation
    High performance liquid chromatography
    Acetone
    Absorption spectroscopy
    chlorophyll a
    Fluorescence
    Nuclear magnetic resonance
    Adsorption
    Degradation
    Chemical analysis

    ASJC Scopus subject areas

    • Materials Chemistry
    • Materials Science(all)

    Cite this

    Effective inclusion of chlorophyllous pigments into mesoporous silica modified with α,ω-diols. / Murata, S.; Furukawa, H.; Kuroda, Kazuyuki.

    In: Chemistry of Materials, Vol. 13, No. 8, 2001, p. 2722-2729.

    Research output: Contribution to journalArticle

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    abstract = "FSM-type mesoporous silica modified with various diols was utilized as an inorganic medium for immobilizing chlorophyll a (Chl a) without denaturation. The energy transfer from Chl b to Chl a in the mesopores was also observed for the first time. Silanol groups on the mesoporous silica were esterified with diols, and this was confirmed by 13C MAS NMR, IR, N2 adsorption, and elemental analysis. The suppression of the pigment degradation in modified FSM was confirmed by both visible absorption spectroscopy of the FSM/Chl compounds and the analysis of the extracts from FSM/Chl by high-performance liquid chromatography. The fluorescence emission bands of Chl a and Chl b in FSM modified with 1,6-hexanediol appeared at 672 and 654 nm, respectively. In the FSM/Chl containing both Chl a and Chl b, the emission band due to Chl b was decreased whereas the band due to Chl a was increased. This is in sharp contrast to the emission spectrum of an acetone solution containing both of Chls, implying energy transfer from Chl b to Chl a in modified mesoporous silica.",
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    AU - Kuroda, Kazuyuki

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    N2 - FSM-type mesoporous silica modified with various diols was utilized as an inorganic medium for immobilizing chlorophyll a (Chl a) without denaturation. The energy transfer from Chl b to Chl a in the mesopores was also observed for the first time. Silanol groups on the mesoporous silica were esterified with diols, and this was confirmed by 13C MAS NMR, IR, N2 adsorption, and elemental analysis. The suppression of the pigment degradation in modified FSM was confirmed by both visible absorption spectroscopy of the FSM/Chl compounds and the analysis of the extracts from FSM/Chl by high-performance liquid chromatography. The fluorescence emission bands of Chl a and Chl b in FSM modified with 1,6-hexanediol appeared at 672 and 654 nm, respectively. In the FSM/Chl containing both Chl a and Chl b, the emission band due to Chl b was decreased whereas the band due to Chl a was increased. This is in sharp contrast to the emission spectrum of an acetone solution containing both of Chls, implying energy transfer from Chl b to Chl a in modified mesoporous silica.

    AB - FSM-type mesoporous silica modified with various diols was utilized as an inorganic medium for immobilizing chlorophyll a (Chl a) without denaturation. The energy transfer from Chl b to Chl a in the mesopores was also observed for the first time. Silanol groups on the mesoporous silica were esterified with diols, and this was confirmed by 13C MAS NMR, IR, N2 adsorption, and elemental analysis. The suppression of the pigment degradation in modified FSM was confirmed by both visible absorption spectroscopy of the FSM/Chl compounds and the analysis of the extracts from FSM/Chl by high-performance liquid chromatography. The fluorescence emission bands of Chl a and Chl b in FSM modified with 1,6-hexanediol appeared at 672 and 654 nm, respectively. In the FSM/Chl containing both Chl a and Chl b, the emission band due to Chl b was decreased whereas the band due to Chl a was increased. This is in sharp contrast to the emission spectrum of an acetone solution containing both of Chls, implying energy transfer from Chl b to Chl a in modified mesoporous silica.

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