Metallophthalocyanines as triplet sensitizers for highly efficient photon upconversion based on sensitized triplet-triplet annihilation

J. L. Han, J. You, H. Yonemura, S. Yamada, S. R. Wang, X. G. Li

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Soluble palladium and platinum phthalocyanines with coumarin moieties were synthesized with Q bands in the red and near-IR regions, in which the molar extinction coefficients were up to 1.01 × 105 cm-1 mol-1. These metallophthalocyanines were coupled with rubrene and applied in photon upconversion systems based on triplet-triplet annihilation. The highest upconversion efficiency of the palladium phthalocyanine was 5.6%, which is higher than that of the platinum phthalocyanine-rubrene system. The larger molar extinction coefficient resulted in high upconversion capability (>105 cm-1 mol-1) and low saturation incident power (<20 mW cm-2).

Original languageEnglish
Pages (from-to)1039-1045
Number of pages7
JournalPhotochemical and Photobiological Sciences
Volume15
Issue number8
DOIs
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry

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