1373776-08-9Relevant articles and documents
Synthesis and unexpected halochromism of carbazole-functionalized dithienophospholes
Stolar, Monika,Baumgartner, Thomas
, p. 1153 - 1160 (2012)
A series of π-conjugated donor-acceptor (D/A) chromophores using dithieno[3,2-b:2′,3′-d]phosphole oxide as an acceptor and 3,6-carbazole as a donor component have been synthesized and characterized. The studies involved several molecular species with D-A, A-D-A, D-A-D architecture, as well as a polymeric species (D-A)n. The different photophysical properties of the systems can be attributed to the carbazole unit de facto acting as aniline species for the π-conjugated system. Treatment of the donor-acceptor materials with acids resulted in the significant red shift of the absorption and emission wavelengths and the process was found to be reversible. Investigations via Density-Functional Theory (DFT) calculations revealed the nature of the unexpected red shift upon protonation. The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2012.