AI Article Synopsis
- Researchers are focusing on creating light-harvesting systems that can absorb a wide range of visible light for artificial photosynthesis.
- A new class of molecules called ethynyl-linked panchromatic dyads has been developed, which shows broad absorption from 300 to 636 nm.
- The study found that the way these molecules are attached affects their light absorption and performance in energy systems like dye-sensitized solar cells.
Article Abstract
The development of light-harvesting architectures with broad absorption coverage in the visible region continues to be an important research area in the field of artificial photosynthesis. Here, we introduce a new class of ethynyl-linked panchromatic dyads composed of dibenzophenazines coupled ortho and meta to tetrapyrroles with an anchoring group that can be grafted onto metal oxide surfaces. Quantum chemical calculations and photophysical measurements of the synthesized materials reveal that both of the dibenzophenazine dyads absorb broadly from 300 to 636 nm and exhibit absorption bands different from those of the constituent chromophore units. Moreover, the different points of attachment of dibenzophenazines to tetrapyrroles give different absorption profiles which computations suggest result from differences in the planarity of the two dyads. Applicability of the dyads in artificial photosynthesis systems was assessed by their incorporation and characterization of their performance in dye-sensitized solar cells.
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| http://dx.doi.org/10.1021/acsami.8b20996 | DOI Listing |
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