1586824-82-9

Upstream product

• 1586824-89-6 C₆₃H₇₁BF₂N₂O₆S₂ 
• 1586824-91-0 C₅₃H₅₁BF₂N₂O₄S₂ 
• 372-09-8 cyanoacetic acid 

Relevant academic research and scientific papers

NOVEL COMPOUND AND PHOTOELECTRIC CONVERSION ELEMENT USING SAME

Provided are a compound represented by formula (1) and a photoelectric conversion element in which the compound is supported within a thin layer of oxide semiconductor fine particles disposed upon a substrate. (In formula (1), m1 represents an integer from 1 to 4; M represents a metalloid atom; Y 1 , Y 2 , and Y 3 each independently represent a hydrogen atom or an aromatic residue; Z 1 and Z 2 each independently represent a halogen atom; Ar 1 and Ar 2 each independently represent an aromatic ring; and X 1 is a substituent on aromatic ring(s) Ar 1 and/or Ar 2 and represents either one or more substituents selected from the group consisting of formulas (2), (3), and (4).)

Boron-dibenzopyrromethene-based organic dyes for application in dye-sensitized solar cells

Novel boron-dibenzopyrromethene dyes with thienyl-cyanoacrylic acid units were synthesized and characterized for application in dye-sensitized solar cells (DSSCs); the dyes feature intense absorption bands in the longer wavelength region with λmax values of 647 nm (ε = 1.57 × 105 M-1 cm-1) for 1, which has two anchoring units, 660 nm (ε = 1.09 × 105 M-1 cm -1) for regioisomer 2, and 644 nm (ε = 1.39 × 10 5 M-1 cm-1) for 3, which has a single anchoring unit. Density functional theory (DFT) analysis revealed that these absorption properties are mainly characterized by intramolecular charge transfer from the dibenzopyrromethene core to the thienyl-cyanoacrylic acid unit that depend on both the number of anchoring groups and the position of the thienyl-cyanoacrylic acid unit on the isoindole ring. The relationship between the chemical structures and cell properties of these dyes was investigated. Although the short circuit photocurrent density (Jsc) value of a 1-loaded cell is larger than that of a 3-loaded cell, which reflects the results of the incident photon-to-charge carrier efficiency (IPCE) spectra, the 1-loaded cell has a lower open circuit voltage (Voc) and fill factor (FF). Accordingly, overall power-to-current conversion efficiencies of 5.24 and 5.48% were obtained for a 1-loaded cell and 3-loaded cell, respectively, under 100 mW cm -2 AM1.5G simulated light. On the other hand, the cell containing butterfly-shaped regioisomer 2, which showed improved intramolecular charge transfer, has an overall power-to-current conversion efficiency of 6.06%; this value is the highest published for BODIPY dyes even though the sensitizer does not contain any strong donor units, such as arylamines.