Details

Autor(en) / Beteiligte

• Ohshita, Joji
• Tominaga, Yuta
• Tanaka, Daiki
• Ooyama, Yousuke
• Mizumo, Tomonobu
• Kobayashi, Norifumi
• Higashimura, Hideyuki

Titel

Synthesis of dithienosilole-based highly photoluminescent donor-acceptor type compounds

Ist Teil von

• Dalton transactions : an international journal of inorganic chemistry, 2013-03, Vol.42 (1), p.3646-3652

Ort / Verlag

England

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Highly photoluminescent acceptor-donor-acceptor (A-D-A) and donor-acceptor (D-A) type compounds with a dithienosilole unit as the donor and perfluorotolyl or dimesitylboryl group(s) as the acceptor were prepared by the reaction of lithiated dithienosilole derivatives with perfluorotoluene or fluorodimesitylborane, respectively. The resulting A-D-A and D-A type compounds showed red-shifted UV absorption and PL bands compared to those of simple dithienosiloles having no acceptor units, reported previously, and were highly photoluminescent in the solid state as well as in solution. Solvatochromic behaviour that would arise from the intramolecular donor-acceptor interaction were observed for the D-A type compounds with respect to the UV absorption and PL spectra. In addition, it was found that bis(dimesitylboryl)dithienosilole and (dimesitylboryl)(methylthio)dithienosilole responded to coexisting fluoride anions, leading to clear UV absorption and PL spectral changes in solutions. Highly emissive DTS-based donor-acceptor type compounds that respond to fluoride anions were prepared.