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Updated: May 15, 2025

Synthesis of Cd-free InP/ZnS Quantum Dots Suitable for Biomedical Applications
Published on: February 6, 2016
Water-soluble ZnPc(COOH)4/Ch/MgO self-assembled systems
Tamara Potlog1, Ion Lungu1, Mariana Diru1
1Laboratory of Organic/Inorganic Materials for Optoelectronics, Institute of Applied Physics, Moldova State University Chisinau Republic of Moldova tpotlog@gmail.com.
Abstract:
In this study, a new metal oxide NP/MPc derivative composite as efficient photosensitizer for photodynamic therapy of cancer and photocatalytic activities is developed. The ZnPc(COOH)4/MgO composite consists of the synthesized water soluble tetra-carboxy zinc phthalocyanine derivative and magnesium oxide nanoparticles prepared with different precipitating agents. The ZnPc(COOH)4/MgO composites were investigated by UV-Vis spectroscopy and fluorescence spectrophotometry. The absorption and emission spectra of the self-assembled ZnPc(COOH)4/MgO composite highlight the Stokes shift between them, which is near 119 nm. The composites also exhibited room-temperature phosphorescence with an average triplet state lifetime of 5.01 μs and a quantum yield of 10.63%.
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