The first tetrathiafulvalene- sigma-polynitrofluorene diads: low HOMO-LUMO gap, amphoteric redox behavior, and charge transfer properties.
[structure: see text] The synthesis, solution redox behavior, EPR, and intramolecular charge transfer properties of novel donor-acceptor diads of TTF-sigma-A type (TTF = substituted tetrathiafulvalene, sigma = saturated spacer, A = polynitrofluorene acceptor) are reported. The HOMO-LUMO gap for compound 6 is as small as 0.3 eV, and spectroelectrochemical experiments reveal its electrochromic behavior in the near-IR region.
Perepichka
D F
DF
Department of Chemistry, University of Durham, Durham DH1 3LE, UK.
Bryce
M R
MR
McInnes
E J
EJ
Zhao
J P
JP