1404193-07-2

Upstream product

• 1308671-90-0 3-(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)-6-(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)dione 
• 87199-17-5 4-formylphenylboronic acid, 
• 1185885-86-2 2,5-bis(2-ethylhexyl)-3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4-dione 
• 1122-91-4 4-bromo-benzaldehyde 
• 18908-66-2 3-bromomethylheptane 
• 128376-64-7 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde 

Downstream Products

• 1404193-15-2 C₆₄H₇₈N₄O₆S₂ 
• 1404193-11-8 C₆₁H₇₇N₃O₅S₂ 
• 1404193-13-0 C₆₇H₈₁N₃O₅S₂ 
• 1404193-17-4 C₇₀H₈₂N₄O₆S₂ 
• 1404193-09-4 4-(5-(4-(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)-3,6-dioxo-2,3,5,6-tetrahydropyrrolo[3,4-c]pyrrol-1-yl)thiophen-2-yl)benzaldehyde 

Relevant academic research and scientific papers

ORGANIC DYES, COMPOSITIONS AND DYE-SENSITIZED SOLAR CELLS

The present invention relates to a liquid crystal display device. The present invention relates to an organic dye, a composition including the same, and a dye-sensitized solar cell twisted π-spacer and DPP-based core unit introduced therein, and to a composition and a dye-sensitized solar cell including the same.

Synthesis of novel 3,6-dithienyl diketopyrrolopyrrole dyes by direct C-H arylation

Direct C-H arylation coupling is potentially a more economical and sustainable process than conventional cross-coupling. However, this method has found limited application in the synthesis of organic dyes for dye-sensitized solar cells. Although direct C-H arylation is not an universal solution to any cross-coupling reactions, it efficiently complements conventional sp2-sp2 bond formation and can provide shorter and more efficient routes to diketopyrrolopyrrole dyes. Here, we have applied palladium catalyzed direct C-H arylation in the synthesis of five new 3,6-dithienyl diketopyrrolopyrrole dyes. All prepared sensitizers display broad absorption from 350 nm up to 800 nm with high molar extinction coefficients. The dye-sensitized solar cells based on these dyes exhibit a power conversion efficiency in the range of 2.9 to 3.4%.

A structural study of DPP-based sensitizers for DSC applications

Four D-π-A sensitizers comprising a thienyl-diketopyrrolopyrrole (ThDPP) bridge were synthesized and tested in iodide/triiodide liquid electrolyte DSC devices. The dye series was strategically designed to develop a structure-property relationship. The best performing sensitizer utilized a phenyl-based anchor and triphenylamine donor (η = 5.03%).