Jump to main content
Jump to site search

Issue 7, 2014
Previous Article Next Article

Electronic tuning effects via π-linkers in tetrathiafulvalene-based dyes

Author affiliations

Abstract

Four new tetrathiafulvalene (TTF)-based dyes featured with a donor–bridge–acceptor (D–π–A) structure were synthesized and characterized. All of them undergo two reversible oxidations to form stable radical cation and dication species. The electronic interactions between the TTF donor and the cyanoacrylic acid acceptor through the different π-linkers have been demonstrated by the presence of a photo-induced intramolecular charge-transfer (ICT) absorption band in the visible region. A red shift of the ICT state can be finely tuned by the degree of aromaticity and extended conjugation of π-bridges. To some extent, the oxidation potentials of these dyes are affected by the nature of π-bridges. They have been applied in organic dye-sensitized solar cells, showing relatively low power conversion efficiencies of up to 0.87% due to substantial charge recombination losses.

Graphical abstract: Electronic tuning effects via π-linkers in tetrathiafulvalene-based dyes

Back to tab navigation

Publication details

The article was received on 27 Mar 2014, accepted on 02 May 2014 and first published on 06 May 2014


Article type: Paper
DOI: 10.1039/C4NJ00428K
Citation: New J. Chem., 2014,38, 3269-3274
  •   Request permissions

    Electronic tuning effects via π-linkers in tetrathiafulvalene-based dyes

    Y. Geng, F. Pop, C. Yi, N. Avarvari, M. Grätzel, S. Decurtins and S. Liu, New J. Chem., 2014, 38, 3269
    DOI: 10.1039/C4NJ00428K

Search articles by author

Spotlight

Advertisements