From fractal to nanorod porphyrin J-Aggregates: Concentration-induced tuning of the aggregate size

Article Abstract:

An experiment was carried out to obtain a structural change from fractal to nanorod J-aggregates of tetrakis(4-sulfonatophenyl)porphyrin by acting on the intermolecular interaction potential. The results show that the mesoscopic structure of porphyrin J-aggregates in solution is not an intrinsic property of porphyrin itself and tuning properly both ionic strength and concentration represents an easy and efficient way to obtain aggregates having controlled size and shape.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Sulfur Compounds, Intermolecular forces, Structure, Sulphur compounds, Phenyl compounds

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Nanosized prophrin J-aggregates in water/AOT/decane microemulsions

Article Abstract:

Water/decane/AOT micro emulsions were used to obtain J-aggregates of the anionic water-soluble porphyrin tetrakinis (4-sulfonatophenyl) porphyrin (TPPS4), having sizes that are controlled by the dimension of the water pool. The analysis of the current data evidences the role of the dimer or trimer in the rate-determining step.

Analysis, Nanotechnology, Chemistry, Physical and theoretical, Physical chemistry

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Aggregation behavior of tetrakis(4-sulfonatophenyl)porphyrin in AOT/water/decane microemulsions

Article Abstract:

The water-soluble 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPS4) is entrapped using AOT/water/decane microemulsions. Quasi-elastic light scattering technique has confirmed the confinement of the porphyrin and its various aggregates into the inner water pool.

Light scattering

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