کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1335945 | 1500239 | 2015 | 7 صفحه PDF | دانلود رایگان |
Novel low symmetry water-soluble zinc phthalocyanines (ZnPcs, complexes 1 and 2) were synthesized and then mixed with silver nanoflowers. Photophysical and photochemical studies were performed in order to determine the efficiency of complexes 1 and 2 as photosensitizers when alone and when combined with the silver nanoflowers. The Pcs show low fluorescence quantum yields and excellent triplet quantum yields of 0.78 (for 1) and 0.66 (for 2) in aqueous media. The triplet quantum yield values increased to 0.80 and 0.89, respectively, in the presence of silver nanoflowers. Long triplet lifetimes ranging from 180 to 200 μs in DMSO were obtained for complexes 1, 2 and their conjugates with silver nanoflowers.
Triplet state behavior of water soluble zinc phthalocyanines containing three 2-[2-(2-ethoxyethoxy)ethoxy]-1-[2-((2-ethoxyethoxy)-ethoxy) methyl] ethoxy and one aminoethoxy or 2-(2-(2-ethoxyamino)-2-oxoethoxy) acetic acid groups at non-peripheral positions improves in the presence of silver nanoflowers.Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 100, 4 November 2015, Pages 296–302