کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1339061 979691 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of the photophysical behavior of tetrasulfonated metallophthalocyanines in the presence of CdTe quantum dots
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Study of the photophysical behavior of tetrasulfonated metallophthalocyanines in the presence of CdTe quantum dots
چکیده انگلیسی

Förster resonance energy transfer (FRET) studies were carried out with CdTe quantum dots (QDs) synthesized in aqueous phase and various tetrasulfonated metallophthalocyanines (MPcS4, M = aluminum ((OH)AlPcS4), zinc (ZnPcS4), silicon ((OH)2SiPcS4) and germanium ((OH)2GePcS4) in a H2O:MeOH (1:1) solvent mixture. The QDs studied were capped with thioglycolic acid (TGA) or mercaptopropionic acid (MPA) with sizes ranging from 2.3 to 3.7 nm. Non-radiative energy transfer from QDs emission to MPcS4 complexes was observed. Study of the photophysics of the MPcs in the presence of the QDs revealed high triplet state quantum yields (ΦT, ranging from 0.41 to 0.85 in the presence of QDs), with corresponding long triplet state lifetimes (τT, which ranged from 140 to 610 μs in the presence of QDs) to allow for photosensitized reactions to occur. The efficiency of energy transfer and the donor–acceptor distance between the MPcs and the QDs were also evaluated.

Förster resonance energy transfer (FRET) occurs from QDs capped with thioglycolic acid (TGA) or mercaptopropionic acid (MPA) to tetrasulfonated metallophthalocyanines with increase in both the triplet yields and lifetimes of the latter.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 28, Issue 5, 1 April 2009, Pages 891–896
نویسندگان
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