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- W2598497583 abstract "Abstract A series of tri‐ tert ‐butyl zinc(II) phthalocyanines (Pcs) substituted with pyridyl, carboxyl, or picolinic acid anchoring groups on the periphery were prepared. Photovoltaic (PV) studies on these dyes were carried out revealing some interesting features. In the case of the pyridyl‐substituted Pcs, the PV properties were found to depend strongly on the the pyridyl substitution pattern ( meta or para ) and the number of pyridyl units at the macrocycle's periphery (one or two). For these four pyridyl‐substituted Pcs, higher photovoltaic efficiencies were obtained for 1) the para ‐ versus the meta ‐substituted Pcs, and 2) the mono‐ versus the bis‐functionalized dyes. In order to improve the poor adsorption of the pyridyl‐substituted Pcs onto TiO 2 , a new dye was tested bearing a picolinic acid unit. This moiety combines a carboxylic acid function, as a strong anchoring group for binding to TiO 2 , with an electron‐withdrawing nitrogen atom for better electron injection into the semiconductor's conduction band. For this latter system, an improvement in the PV efficiency up to 2.1 % was obtained." @default.
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- W2598497583 date "2017-03-29" @default.
- W2598497583 modified "2023-10-02" @default.
- W2598497583 title "Pyridyl- and Picolinic Acid Substituted Zinc(II) Phthalocyanines for Dye-Sensitized Solar Cells" @default.
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- W2598497583 doi "https://doi.org/10.1002/cplu.201700048" @default.
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