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- W2090411504 endingPage "195501" @default.
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- W2090411504 abstract "Porphyrins may be used as photosensitizers for photodynamic therapy, photocatalysts for organic pollutant dissociation, agents for medical imaging and diagnostics, applications in luminescence and electronics. The detection of porphyrins is significantly important and here the interaction of protoporphyrin-IX (PPIX) with CdTe quantum dots was studied. It was observed that the luminescence of CdTe quantum dots was quenched dramatically in the presence of PPIX. When CdTe quantum dots were embedded into silica layers, almost no quenching by PPIX was observed. This indicates that PPIX may interact and alter CdTe quantum dots and thus quench their luminescence. The oxidation of the stabilizers such as thioglycolic acid (TGA) as well as the nanoparticles by the singlet oxygen generated from PPIX is most likely responsible for the luminescence quenching. The quenching of quantum dot luminescence by porphyrins may provide a new method for photosensitizer detection." @default.
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- W2090411504 date "2011-03-23" @default.
- W2090411504 modified "2023-09-27" @default.
- W2090411504 title "Interaction of porphyrins with CdTe quantum dots" @default.
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- W2090411504 doi "https://doi.org/10.1088/0957-4484/22/19/195501" @default.
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