716-34-7Relevant academic research and scientific papers
A new tetracyclic lactam building block for thick, broad-bandgap photovoltaics
Kroon, Renee,Diaz De Zerio Mendaza, Amaia,Himmelberger, Scott,Bergqvist, Jonas,B?cke, Olof,Faria, Gregório Couto,Gao, Feng,Obaid, Abdulmalik,Zhuang, Wenliu,Gedefaw, Desta,Olsson, Eva,Ingan?s, Olle,Salleo, Alberto,Müller, Christian,Andersson, Mats R.
, p. 11578 - 11581 (2014)
A new tetracyclic lactam building block for polymer semiconductors is reported that was designed to combine the many favorable properties that larger fused and/or amide-containing building blocks can induce, including improved solid-state packing, high charge carrier mobility, and improved charge separation. Copolymerization with thiophene resulted in a semicrystalline conjugated polymer, PTNT, with a broad bandgap of 2.2 eV. Grazing incidence wide-angle X-ray scattering of PTNT thin films revealed a strong tendency for face-on π-stacking of the polymer backbone, which was retained in PTNT:fullerene blends. Corresponding solar cells featured a high open-circuit voltage of 0.9 V, a fill factor around 0.6, and a power conversion efficiency as high as 5% for >200 nm thick active layers, regardless of variations in blend stoichiometry and nanostructure. Moreover, efficiencies of >4% could be retained when thick active layers of ～400 nm were employed. Overall, these values are the highest reported for a conjugated polymer with such a broad bandgap and are unprecedented in materials for tandem and particularly ternary blend photovoltaics. Hence, the newly developed tetracyclic lactam unit has significant potential as a conjugated building block in future organic electronic materials.
CH?S hydrogen bonds as the organising force in 2,3-thienyl- and phenyl- or 2,3-dithienyl-substituted propenoic acid aggregates studied by the combination of FT-IR spectroscopy and computations
Csankó,Illés,Felf?ldi,Kiss,Sipos,Pálinkó
experimental part, p. 259 - 263 (2011/06/27)
Various propenoic acid stereoisomers 2,3-disubstituted with thienyl and/or phenyl groups were synthesised and their aggregation behaviour was studied both in solution and in the solid state by experimental (mid-range FT-IR spectroscopy) and computational
New amidino-benzimidazolyl thiophenes: Synthesis and photochemical synthesis
Starcevic, Kristina,Boykin, David W.,Karminski-Zamola, Grace
, p. 218 - 222 (2007/10/03)
The photochemical synthesis of amidino-benzimidazolyl thiophenes was discussed. The amidino-benzimidazolyl-substituted bis-1,2-(2-thienyl) ethenes and benzo[1,2-b:4,3-b′] dithiophenes were prepared by the condensation of amidino-substituted o-phenylene diamines with corresponding dialdehydes. The synthesized bis-cationic bis-amidino benzimidazolyl substituted diphenylfurans were found to inhibit HIV-1 infection.
Synthesis of some new bis-(p-fluorophenyl)amides of the thieno[3,2-b]thiophene, thieno[3,2-b]furan and 1,2-bis{5-[2-(2-thienyl)ethenyl] 2-thienyl}ethene series
Pavlicic, Davorka,Koruznjak, Jasna Dogan,Banic-Tomisic, Zrinka,Karminski-Zamola, Grace
, p. 871 - 884 (2007/10/03)
Three new heterocyclic substituted dianilides, namely 3-chloro-5-[1-(p- fluorophenylcarbamoyl)-2-(2-thienyl)ethenyl]thieno-[3,2-b]thiophene-2-carboxy-p- fluoroanilide (8), 1,2-bis{5-[2-(p-fluorophenylcarbamoyl)-2-(2-thienyl)ethenyl]- 2-thienyl}ethene (13) and 6-chloro-2-{2-[3-chloro-2-(p-fluorophenyl-carbamoyl)- 5-thieno[3,2-b]thienyl]-2-ethoxycarbonylethenyl}thieno[3,2-b] furan-5-carboxy-p-fluoroanilide (20) were prepared by multistep synthesis. The prepared dianilides are of particular interest for their potential to serve as the planar heteroaromatic core of DNA intercalators or groove binders.
