Near infrared-to-blue photon upconversion by exploiting direct S-T absorption of a molecular sensitizer

Yoichi Sasaki, Shogo Amemori, Hironori Kouno, Nobuhiro Yanai, Nobuo Kimizuka

    Research output: Contribution to journalArticlepeer-review

    42 Citations (Scopus)

    Abstract

    Triplet-triplet annihilation-based photon upconversion (TTA-UC) from NIR to blue light remains a great challenge. Here, we employ a direct singlet-to-triplet (S-T) excitation to circumvent an energy loss associated with the intersystem crossing (ISC) of triplet sensitizers. The TTA-UC based on the S-T absorption (STUC) allowed an efficient NIR (λ = 724 nm)-to-blue (λ = 462 nm) upconversion with a large anti-Stokes shift of 0.97 eV.

    Original languageEnglish
    Pages (from-to)5063-5067
    Number of pages5
    JournalJournal of Materials Chemistry C
    Volume5
    Issue number21
    DOIs
    Publication statusPublished - 2017

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Materials Chemistry

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