Journal
NANO LETTERS
Volume 16, Issue 10, Pages 6523-6528Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b03135
Keywords
Porphyrin; nanocrystals; photocatalysis; self-assembly; metclation
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Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering
- National Natural Science Foundation of China [21422102, 21171049, 50828302]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [13HASTIT009]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT_15R18]
- U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
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The design and engineering of the size, shape, and chemistry of photoactive building blocks enables the fabrication of functional nanoparticles for applications in light harvesting, photocatalytic synthesis, water splitting, phototherapy, and photodegradation. Here, we report the synthesis of such nanoparticles through a surfactant-assisted interfacial self-assembly process using optically active porphyrin as a functional building block. The self-assembly process relies on specific interactions such as p-p stacking and metalation (metal atoms and ligand coordination) between individual porphyrin building blocks. Depending on the kinetic conditions and type of surfactants, resulting structures exhibit well-defined one- to three-dimensional morphologies such as nanowires, nanooctahedra, and hierarchically ordered internal architectures. Specifically, electron microscopy and X-ray diffraction results indicate that these nanoparticles exhibit stable single-crystalline and nanoporous frameworks. Due to the hierarchical ordering of the porphyrins, the nanoparticles exhibit collective optical properties resulted from coupling of molecular porphyrins and photocatalytic activities such as photodegradation of methyl orange (MO) pollutants and hydrogen production.
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