Jorgensen, Mikkel; Krebs, Frederik C. published the artcile< Stepwise and Directional Synthesis of End-Functionalized Single-Oligomer OPVs and Their Application in Organic Solar Cells>, Electric Literature of 112-63-0, the main research area is stepwise oligomerization end functionalized oligomer phenylene vinylene solar cell.
A new stepwise directional synthetic route to single-oligomer p-phenylenevinylenes (OPVs) was developed. The 1st step in the reaction sequence is the condensation of a functionalized benzaldehyde with a novel monomer having a Me phosphonate ester group in one end and an acetal-protected aldehyde at the other end of a stilbene core. Oligomerization then proceeds stepwise by alternating reaction of the previous aldehyde-terminated OPV fragment with the monomer and deprotection of the acetal. Thus, OPVs with 3, 5, 7, 9, and 11 phenylene vinylene units were prepared that has an electron-donating methoxy group at one end and an electron-accepting aldehyde group at the other end. Some examples where a dimethylamino group replaced the methoxy group were also prepared The oligomer with seven phenylene vinylene units was then further derivatized at the aldehyde position to create OPVs with a range of substituents from strongly electron-accepting nitrophenyl to electron-donating methoxyphenyl. Photovoltaic cells were assembled with the synthesized OPVs as the photoactive layer. Illumination under simulated sunlight (AM1.5) gave short circuit currents (Isc) in the range 0.015-0.5 mA cm-2 and typical open circuit voltages (Voc) of 0.4-0.8 V. The maximum efficiency obtained was ∼0.1%.
Journal of Organic Chemistry published new progress about Acetals Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PUR (Purification or Recovery), RCT (Reactant), SPN (Synthetic Preparation), PROC (Process), PREP (Preparation), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.
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