کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1405364 1501776 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of number of anchoring groups on binding ability of perylene diimides with SnO2 and TiO2 nanoparticles: A spectroscopic approach
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Effect of number of anchoring groups on binding ability of perylene diimides with SnO2 and TiO2 nanoparticles: A spectroscopic approach
چکیده انگلیسی

The consequence of number of anchoring groups on the binding ability of amino acid substituted perylene diimides with SnO2 and TiO2 semiconductor nanoparticles were investigated by various spectroscopic techniques for photovoltaic applications. For this purpose, two symmetrical and one new unsymmetrical perylene diimides were synthesized and characterized by IR, NMR and Mass spectroscopy. Optical properties of all the three compounds were investigated. Ground state interactions between the perylene diimides and semiconductor nanoparticles were probed through absorption measurements. The binding constant data were calculated from the fluorescence measurements. The results revealed that the sensitizer having two anchoring groups in close proximity possess lesser binding constant with semiconductor nanoparticles. Electron transfer mechanism was proposed and confirmed through Rehm Weller equation. The present work will pave the way for future designing of sensitizers with anchoring groups.


► Binding ability of perylene diimides with TiO2 and SnO2 was analyzed.
► Appearance of isobestic point in absorption measurements suggests the complex formation.
► Position and number of anchoring group plays important role in binding parameter.
► Electron transfer mechanism confirmed through Rehm Weller equation.
► The results will provide basic insights for designing of sensitizers with anchoring groups.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 1038, 24 April 2013, Pages 235–241
نویسندگان
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