کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1674731 1008969 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nano-structure of polyimide and poly(isobutyl methacrylate) monolayer films studied by interlayer electron transfer between porphyrin and pyromellitic diimide moieties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Nano-structure of polyimide and poly(isobutyl methacrylate) monolayer films studied by interlayer electron transfer between porphyrin and pyromellitic diimide moieties
چکیده انگلیسی

Hetero-multilayers composed of porphyrin-containing poly(isobutyl methacrylate) (PiBMA) and polyimide (PI) monolayers were prepared by using the Langmuir-Blodgett technique, and the interlayer electron transfer process from photo-excited porphyrins to pyromellitic diimide moieties in PI layers was observed by fluorescence spectroscopy. The efficiency of the electron transfer showed strong dependence on the number of PI layers, suggesting the presence of defects in the PI plane, which were filled with PI after the successive deposition of PI monolayers. The three-dimensional and two-dimensional active sphere models (Perrin model) well explained the interlayer electron transfer phenomena. We discussed the nano-structures of the multilayer films in terms of the thickness of each layer and the location of hydrophobic porphyrins in the PiBMA monolayer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 515, Issue 5, 22 January 2007, Pages 3107–3111
نویسندگان
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