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Far-red sensitizing octatrifluorobutoxy phosphorous triazatetrabenzocorrole: Synthesis, spectral characterization and aggregation studies

Paper ID Volume ID Publish Year Pages File Format Full-Text
26565 43963 2014 7 PDF Available
Title
Far-red sensitizing octatrifluorobutoxy phosphorous triazatetrabenzocorrole: Synthesis, spectral characterization and aggregation studies
Abstract

•Phosphorous triazatetrabenzocorrole bearing non-peripheral octatrifluorobutoxy groups was synthesized.•Aggregation studies were carried out in solvents with increasing dielectric constants.•Aggregation of dye found increasing with increase in dielectric constant of organic solvents.•Impact of CF3 group on changes in energy levels of sensitizer was also investigated by theoretical and experimental methods.

Novel phosphorous triazatetrabenzocorrole (4) bearing non-peripheral octatrifluorobutoxy groups was successfully synthesized, with an aim to develop potential far-red sensitizer for dye sensitized solar cells. The dye was characterized by 1H NMR, IR, mass, and UV–vis spectral techniques. It showed excellent solubility in majority of common organic solvents. Aggregation behavior of the dye 4 was investigated in several solvents with increasing dielectric constants. This dye-4 was found to be adsorbed on the nanoporous TiO2 via axial ligation. Further implication of structure of dye due to incorporation of CF3 group on the energy levels was evaluated by theoretical and experimental approaches. The intense far-red absorption of dye 4 including its excellent solubility and proper control of its energy levels makes it a promising candidate for its application as sensitizer in dye sensitized solar cells.

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Keywords
Far-red sensitizer; Phosphorous phthalocyanine; Aggregation studies; Solvent effect
First Page Preview
Far-red sensitizing octatrifluorobutoxy phosphorous triazatetrabenzocorrole: Synthesis, spectral characterization and aggregation studies
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 289, 1 September 2014, Pages 53–59
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering