Jump to main content
Jump to site search


Selenium-containing BODIPY dyes as photosensitizers for triplet-triplet annihilation upconversion

Abstract

In this study, two new selenium-containing BODIPY dyes were synthesized as photosensitizers for triplet-triplet annihilation upconversion (TTA-UC). Bis(phenylselanyl)-BODIPY 1 absorbed visible light at 518 nm (εmax = 7.84 × 104 cm−1 M−1) and exhibited fluorescence at 594 nm with a low fluorescence quantum yield (ФF) of 0.03. The low ФF value was ascribed to heavy atom effects. When a TTA-UC system comprised of 1 and triplet acceptor perylene was set up, a purplish white emission was observed with a significant anti-Stokes shift of 77 nm and high UC quantum yield (Ф’UC) of 17% in CH2Cl2. Notably, the intramolecular charge transfer of 1 enabled us to tune the emission color of the TTA-UC system. On the other hand, the use of selenophene derivative 2 as a sensitizer instead of 1 led to a decrease in the UC efficiency. The relationship between structure and sensitizer properties in the TTA-UC system is discussed herein.

Back to tab navigation

Supplementary files

Publication details

The article was received on 25 Feb 2018, accepted on 10 May 2018 and first published on 12 May 2018


Article type: Paper
DOI: 10.1039/C8TC00944A
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
  •   Request permissions

    Selenium-containing BODIPY dyes as photosensitizers for triplet-triplet annihilation upconversion

    M. Nakashima, K. Iizuka, M. Karasawa, K. Ishii and Y. Kubo, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC00944A

Search articles by author

Spotlight

Advertisements