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PHOTOPHYSICS OF Y2O3:ZnPc(COOH)4 ASSEMBLIES
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Yttrium oxide nanoparticles were conjugated separately to zinc
tetracarboxy phthalocyanine (ZnPc(COOH)₄) to form Y₂O₃:ZnPc(COOH)₄
assemblies. The triplet quantum yields and lifetimes of the phthalocyanines
increased following conjugation. The resulting assemblies exhibited stronger
fluorescence with increased quantum yields, reaching up to 33.44% compared to
ZnPc(COOH)₄ alone, which has a value of 0.3%. The triplet quantum yields
increased from ΦT = 14.8% for ZnPc(COOH)₄ to ΦT = 29.9% and 30.9% for the
Y₂O₃:ZnPc(COOH)₄ assemblies. The lifetimes also became longer for the
conjugates compared to ZnPc(COOH)₄ alone. These studies open new avenues for
the development of next-generation phosphorescent materials with tailored
functionalities for both industrial and medical applications.
Editura Universitatii Alexandru Ioan Cuza din Iasi
Title: PHOTOPHYSICS OF Y2O3:ZnPc(COOH)4 ASSEMBLIES
Description:
Yttrium oxide nanoparticles were conjugated separately to zinc
tetracarboxy phthalocyanine (ZnPc(COOH)₄) to form Y₂O₃:ZnPc(COOH)₄
assemblies.
The triplet quantum yields and lifetimes of the phthalocyanines
increased following conjugation.
The resulting assemblies exhibited stronger
fluorescence with increased quantum yields, reaching up to 33.
44% compared to
ZnPc(COOH)₄ alone, which has a value of 0.
3%.
The triplet quantum yields
increased from ΦT = 14.
8% for ZnPc(COOH)₄ to ΦT = 29.
9% and 30.
9% for the
Y₂O₃:ZnPc(COOH)₄ assemblies.
The lifetimes also became longer for the
conjugates compared to ZnPc(COOH)₄ alone.
These studies open new avenues for
the development of next-generation phosphorescent materials with tailored
functionalities for both industrial and medical applications.
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