Porphyrin-decorated ZnO nanowires as nanoscopic injectors for phototheragnosis of cancer cells

Choi, Seo Young; Lee, Jooran; Lee, Kangmin; Yoon, Seok Min; Yoon, Minjoong

doi:10.1039/d2nj02084j

Cited by 2 publications

(1 citation statement)

References 49 publications

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“…Organic–inorganic systems based on phthalocyanine (or porphyrin derivatives) and inorganic semiconductors were investigated for their suitability in photovoltaic cells [ 25 , 26 , 27 ], chemical gas sensors [ 7 , 28 , 29 ], photocatalysis [ 3 ], the biomedical field [ 30 ], etc. Although different wet preparation methods (sol–gel [ 31 ], Langmuir–Blodgett [ 32 ], cathodic electrodeposition [ 25 ], etc.)…”

Section: Introductionmentioning

confidence: 99%

Macrocyclic Compounds: Metal Oxide Particles Nanocomposite Thin Films Deposited by MAPLE

et al. 2023

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Nanocomposite films based on macrocyclic compounds (zinc phthalocyanine (ZnPc) and 5,10,15,20-tetra(4-pyridyl) 21H,23H-porphyrin (TPyP)) and metal oxide nanoparticles (ZnO or CuO) were deposited by matrix-assisted pulsed laser evaporation (MAPLE). 1,4-dioxane was used as a solvent in the preparation of MAPLE targets that favor the deposition of films with a low roughness, which is a key feature for their integration in structures for optoelectronic applications. The influence of the addition of ZnO nanoparticles (~20 nm in size) or CuO nanoparticles (~5 nm in size) in the ZnPc:TPyP mixture and the impact of the added metal oxide amount on the properties of the obtained composite films were evaluated in comparison to a reference layer based only on an organic blend. Thus, in the case of nanocomposite films, the vibrational fingerprints of both organic compounds were identified in the infrared spectra, their specific strong absorption bands were observed in the UV–Vis spectra, and a quenching of the TPyP emission band was visible in the photoluminescence spectra. The morphological analysis evidenced agglomerated particles on the composite film surface, but their presence has no significant impact on the roughness of the MAPLE deposited layers. The current density–voltage (J-V) characteristics of the structures based on the nanocomposite films deposited by MAPLE revealed the critical role played by the layer composition and component ratio, an improvement in the electrical parameters values being achieved only for the films with a certain type and optimum amount of metal oxide nanoparticles.

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