Monodisperse porphyrin nanospheres synthesized by coordination polymerization

Abstract

Monodisperse nanospheres are formed by coordination polymerization tetrakis(4-pyridyl)porphyrin-metal complexes with chloroplatinic acid in aqueous solution. The porphyrin nanospheres and their platinized nanocomposites have potential applications in catalysis and solar energy conversion systems.

Porphyrin-Based Nanostructures for Photocatalytic Applications

“…Actually, the assembly of porphyrins is characterized by their synthetic versatility and morphology controllability. Different from inorganic nanostructures, nanoscale porphyrin structures are mainly formed by self-assembly, including reprecipitation [ 39 , 40 , 41 , 42 ], surfactant-assisted self-assembly (SAS) [ 43 ], sonication-assisted assembly [ 44 ], vaporization, condensation-recrystallization (VCR) organization [ 45 ], ionic self-assembly [ 46 , 47 ], coordination polymerization [ 48 , 49 , 50 ], etc. Since the self-assembly of porphyrins is mainly dependent on various intermolecular noncovalent interactions (hydrogen bonding, π-π stacking, hydrophobic, electrostatic interactions and van der Waals forces), porphyrin nanostructures with a certain size, shape and function can be provided through careful molecular and supramolecular design.…”

Self-assembly of platinum nanoparticles and coordination-driven assembly with porphyrin

“…The formation procedure of these nanospheres is revealed by SEM images of the intermediate products at 3 hours (a), 4.5 hours (b), 7 hours (c) and 24 hours (d), respectively (figure 5). 48 Nevertheless, all of the afore-mentioned coordinate reactions between Pt and nitrogen-containing molecules were concentrated on Pt ions, rather than Pt (0)-NPs. After four years, a novel coordination-induced formation at the submicrometer-scale, monodisperse, spherical colloids of organic-inorganic hybrid materials was presented as a coordination-based assembly between the nitrogen ligand of p-phenylenediamine and Pt cations in an aqueous solution at room temperature.…”

Molecular nanoarchitectures composed of porphyrins and carbon nanomaterials for light energy conversion

“…They are readily synthesized, and their properties are easily tuned by substitution and metalation. In addition, the aggregated state guarantees increased absorption cross-sections and an efficient use of the solar spectrum for energy conversion [24][25][26]. Based on the above concept, numerous reports have appeared discussing photoinduced charge separation and light energy conversion in porphyrin-CNT and porphyrin-fullerene assemblies, so far [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43].…”