304019-13-4Relevant academic research and scientific papers
Low-Symmetry Ω-Shaped Zinc Phthalocyanine Sensitizers with Panchromatic Light-Harvesting Properties for Dye-Sensitized Solar Cells
Yamamoto, Satoshi,Zhang, Angel,Stillman, Martin J.,Kobayashi, Nagao,Kimura, Mutsumi
, p. 18760 - 18768 (2016)
Two low-symmetry phthalocyanines (Pcs) substituted with thiophene units at the non-peripheral (α) and peripheral (β) positions were synthesized and their optical, electronic-structure, and electrochemical properties were investigated. The substitution of thiophene units at the α positions of the phthalocyanine skeleton resulted in a red shift of the Q band and significantly modified the molecular-orbital electronic distributions just below the HOMO and just above the LUMO, with distortion of the typical Gouterman four-orbital arrangement of MOs. Two amphiphilic Ω-shaped ZnPcs (αPcS1 and αPcS2) bearing a π-conjugated side chain with an adsorption site at an α position of the Pc macrocycle were synthesized as sensitizers for dye-sensitized solar cells (DSSCs). The absorption spectra of αPcS1 and αPcS2 showed red shifted Q bands and a broad band from 350 to 550 nm assignable to the intramolecular charge-transfer transition from the ZnPc core to the side chains. Time-dependent DFT calculations provided a clear interpretation of the effect of the thiophene conjugation on the typical phthalocyanine core π MOs. Compound αPcS1 was used as a light-harvesting dye on a TiO2electrode for a DSSC, which showed a panchromatic response in the range 400–800 nm with a power conversion efficiency of 5.5 % under one-sun conditions.
Preparation, characterization and investigation of photo-physical properties of thiophene-substituted rare-earth bisphthalocyanines
?erny, Ji?í,Dokládalová, Lenka,Ly?ka, Antonín,Mikysek, Tomá?,Bure?, Filip
, p. 31 - 36 (2017)
Three bis[octakis-(2-thienyl)phthalocyaninato] rare-earth metal(III) phthalocyanine complexes (Pc2Pr, Pc2Sm, Pc2Gd) were synthesized for the first time. The new compounds were characterized by UV-vis, NMR, FT-IR, mass spectroscopies as well as elemental a
A new phthalocyanine derivative having peripheral 2-thienyl substituents
Muto,Temma,Kimura,Hanabusa,Shirai
, p. 1649 - 1650 (2000)
A phthalocyanine derivative having eight 2-thienyl substituents at the β-position was synthesized and electro-chemical oxidation of the phthalocyanine gave an insoluble polymer film on the electrode surface.
