Publications by authors named "Katharine Geramita"
Article Synopsis
- A series of donor-acceptor compounds made from oligothiophenes and perfluoro-9-heterofluorene were synthesized using specific chemical reactions, showing promise for materials with effective electron transport properties.
- The compounds have low LUMO energy levels ranging from -3.3 to -3.6 eV and HOMO-LUMO gaps between 2.4 and 2.5 eV, with yellow-orange photoluminescence.
- Their performance in photovoltaic devices, particularly when blended with poly-3-hexylthiophene (P3HT), is better than devices using only P3HT, indicating potential for improved electron transport in applications.
A series of 2,7-substituted hexafluoro-9-heterofluorenes was synthesized via nucleophilic aromatic substitution (S(N)Ar(F)) reactions of phenyllithium, thienyllithium, and lithium phenylacetylide with various octafluoroheterofluorenes and 2,2'-dibromooctafluorobiphenyl. These compounds are of interest as possible building blocks for materials with useful electron transport properties, since they possess relatively low LUMO energy levels. The HOMO-LUMO energy gaps, as determined by UV-vis spectroscopy, range between 3.
View Article and Find Full Text PDFThe synthesis, optical, electrochemical and physical characterization of 2,7-bis(pentafluorophenylethynyl)hexafluoroheterofluorenes is described along with a preliminary evaluation of their performance in photovoltaic applications.
View Article and Find Full Text PDF