Abstract
UV–visible spectral observations indicate that the J-aggregation of protonated meso-tetra(4-sulfonatophenyl)porphyrin ([H2TSPP]2+) under acidic conditions is completely inhibited by the π–π counteraction between 1-butyl-pyridinium tetrafluoroborate ([bpy]BF4) and [H2TSPP]2+. The studies also suggest that the intermolecular π–π force is of relative importance for the J-aggregates of [H2TSPP]2+ and the intermolecular electrostatic force for the H-aggregates.
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Acknowledgments
The National Natural Science Foundation of China (nos. 20673039, 20533010, 20590366) and the Science and Technology Commission of Shanghai Municipality (06JC14023, 06SR07101) are gratefully acknowledged for financial support.
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Wan, QX., Liu, Y. & Wang, SS. Inhibition of J-aggregation of meso-tetra(4-sulfonatophenyl)porphyrin by an ionic liquid with π-conjugated character. Monatsh Chem 140, 335–337 (2009). https://doi.org/10.1007/s00706-008-0028-z
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DOI: https://doi.org/10.1007/s00706-008-0028-z