title: Surfactant-assisted porphyrin based hierarchical nano/micro assemblies and their efficient photocatalytic behavior.
abstract: In this report, we have demonstrated the synthesis of surfactant-assisted different morphologies of meso-tetra(4-carboxyphenyl)porphyrin assemblies (spherical to flower shaped). These nano/micro assemblies are well characterized by scanning electron microscopy and X-ray diffraction. The formation of assemblies is driven by noncovalent interactions such as hydrophobic-hydrophobic and aromatic π-π stacking between the molecules. The steady state and time-resolved spectroscopic investigation reveal that different assemblies are formed by virtue of special supramolecular organizations. The photocatalytic activities of different assemblies have been demonstrated with an organic pollutant Rhodamine B dye under the visible light irradiation. Such porphyrin based assemblies could pave the way for designing new optical based materials for the applications in photocatalytic, photovoltaic, and light harvesting system.
authors.affiliation: Department of Materials Science, Indian Association for the Cultivation of Science , Kolkata-700 032, India.
authors.forename: Sadananda
authors.initials: S
authors.lastname: Mandal
authors.forename: Sandip K
authors.initials: SK
authors.lastname: Nayak
authors.forename: Sivaramakrishna
authors.initials: S
authors.lastname: Mallampalli
authors.forename: Amitava
authors.initials: A
authors.lastname: Patra