کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5408133 1506525 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of energy transfer phenomenon between quantum dots and zinc porphyrin in solution
ترجمه فارسی عنوان
بررسی پدیده انتقال انرژی بین نقاط کوانتومی و پورفیرین روی در محلول
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی


- FRET from CdSxSe1 − x/ZnS quantum dots (QDs) to zinc porphyrin (1) is observed.
- Significant reduction in life-time value of QDs is noted in presence of 1.
- Co-existence of energy transfer and surface passivation mechanism is observed for QDs/1 system.
- Possible application of QDs/1 system as light-harvesting devices in near future

The mechanism of energy transfer (ET) phenomenon from the excited CdSxSe1 − x/ZnS alloyed quantum dots (QDs) to 2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine zinc(II) (1) molecule is investigated in solution through Förster resonance energy transfer (FRET) calculations, photoluminescence intensity measurements and lifetime quenching experiments. The process of ET from the excited QDs to 1 in toluene is established by FRET calculations. ET efficiency in QDs/1 complex is regulated by surface passivation and ultrafast quenching mechanism. We propose that CdSxSe1 − x/ZnS alloyed quantum dots may be suitably employed as an efficient energy transfer donor for zinc-porphyrin for possible application in light harvesting devices.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 246, November 2017, Pages 17-24
نویسندگان
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