Energy-donor phosphorescence quenching study of triplet-triplet energy transfer between UV absorbers

Azusa Kikuchi, Yuya Nakabai, Nozomi Oguchi-Fujiyama, Kazuyuki Miyazawa, Mikio Yagi

    Abstract

    T-T, decreases in the following order: kT-T (BMDBM-DOMBM)>kT-T (BMDBM-OMC)≥kT-T (BMDBM-OCR). The presence of DOMBM enhances the photostability of the widely used combination of UV-A and UV-B absorbers, BMDBM and OCR. The effects of the triplet-triplet energy transfer on the photostability of BMDBM are discussed.]]>

    Original languageEnglish
    Pages (from-to)203-208
    Number of pages6
    JournalJournal of Luminescence
    Volume166
    DOIs
    StatePublished - 2015 Jun 10

    Fingerprint

    Energy transfer
    Phosphorescence
    Laser excitation
    Quenching
    Rate constants

    Keywords

    • Phosphorescence
    • Triplet-triplet energy transfer
    • UV absorber

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Condensed Matter Physics
    • Chemistry(all)
    • Biochemistry
    • Biophysics

    Cite this

    Energy-donor phosphorescence quenching study of triplet-triplet energy transfer between UV absorbers. / Kikuchi, Azusa; Nakabai, Yuya; Oguchi-Fujiyama, Nozomi; Miyazawa, Kazuyuki; Yagi, Mikio.

    In: Journal of Luminescence, Vol. 166, 10.06.2015, p. 203-208.

    Research output: Contribution to journalArticle

    Kikuchi, Azusa; Nakabai, Yuya; Oguchi-Fujiyama, Nozomi; Miyazawa, Kazuyuki; Yagi, Mikio / Energy-donor phosphorescence quenching study of triplet-triplet energy transfer between UV absorbers.

    In: Journal of Luminescence, Vol. 166, 10.06.2015, p. 203-208.

    Research output: Contribution to journalArticle

    @article{cd18515cc1d44ef4b9d42d6e3cb79500,
    title = "Energy-donor phosphorescence quenching study of triplet-triplet energy transfer between UV absorbers",
    keywords = "Phosphorescence, Triplet-triplet energy transfer, UV absorber",
    author = "Azusa Kikuchi and Yuya Nakabai and Nozomi Oguchi-Fujiyama and Kazuyuki Miyazawa and Mikio Yagi",
    year = "2015",
    month = "6",
    doi = "10.1016/j.jlumin.2015.05.033",
    volume = "166",
    pages = "203--208",
    journal = "Journal of Luminescence",
    issn = "0022-2313",
    publisher = "Elsevier",

    }

    TY - JOUR

    T1 - Energy-donor phosphorescence quenching study of triplet-triplet energy transfer between UV absorbers

    AU - Kikuchi,Azusa

    AU - Nakabai,Yuya

    AU - Oguchi-Fujiyama,Nozomi

    AU - Miyazawa,Kazuyuki

    AU - Yagi,Mikio

    PY - 2015/6/10

    Y1 - 2015/6/10

    N2 - The intermolecular triplet-triplet energy transfer from a photounstable UV-A absorber, 4-tert-butyl-4′-methoxydibenzoylmethane (BMDBM), to UV-B absorbers, 2-ethylhexyl 4-methoxycinnamate (octyl methoxycinnamate, OMC), octocrylene (OCR) and dioctyl 4-methoxybenzylidenemalonate (DOMBM) has been observed using a 355 nm laser excitation in rigid solutions at 77 K. The decay curves of the energy-donor phosphorescence in the presence of the UV-B absorbers deviate from the exponential decay at the initial stage of the decay. The Stern-Volmer formulation is not valid in rigid solutions because molecular diffusion is impossible. The experimental results indicate that the rate constant of triplet-triplet energy transfer from BMDBM to the UV-B absorbers, kT-T, decreases in the following order: kT-T (BMDBM-DOMBM)>kT-T (BMDBM-OMC)≥kT-T (BMDBM-OCR). The presence of DOMBM enhances the photostability of the widely used combination of UV-A and UV-B absorbers, BMDBM and OCR. The effects of the triplet-triplet energy transfer on the photostability of BMDBM are discussed.

    AB - The intermolecular triplet-triplet energy transfer from a photounstable UV-A absorber, 4-tert-butyl-4′-methoxydibenzoylmethane (BMDBM), to UV-B absorbers, 2-ethylhexyl 4-methoxycinnamate (octyl methoxycinnamate, OMC), octocrylene (OCR) and dioctyl 4-methoxybenzylidenemalonate (DOMBM) has been observed using a 355 nm laser excitation in rigid solutions at 77 K. The decay curves of the energy-donor phosphorescence in the presence of the UV-B absorbers deviate from the exponential decay at the initial stage of the decay. The Stern-Volmer formulation is not valid in rigid solutions because molecular diffusion is impossible. The experimental results indicate that the rate constant of triplet-triplet energy transfer from BMDBM to the UV-B absorbers, kT-T, decreases in the following order: kT-T (BMDBM-DOMBM)>kT-T (BMDBM-OMC)≥kT-T (BMDBM-OCR). The presence of DOMBM enhances the photostability of the widely used combination of UV-A and UV-B absorbers, BMDBM and OCR. The effects of the triplet-triplet energy transfer on the photostability of BMDBM are discussed.

    KW - Phosphorescence

    KW - Triplet-triplet energy transfer

    KW - UV absorber

    UR - http://www.scopus.com/inward/record.url?scp=84930664015&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84930664015&partnerID=8YFLogxK

    U2 - 10.1016/j.jlumin.2015.05.033

    DO - 10.1016/j.jlumin.2015.05.033

    M3 - Article

    VL - 166

    SP - 203

    EP - 208

    JO - Journal of Luminescence

    T2 - Journal of Luminescence

    JF - Journal of Luminescence

    SN - 0022-2313

    ER -