کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1401394 984695 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solvent and concentration effects on fluorescence emission in MEH-PPV solution
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Solvent and concentration effects on fluorescence emission in MEH-PPV solution
چکیده انگلیسی

We systematically studied the excitation and the fluorescence steady-state spectroscopy of poly[2-methoxy-5-(2′-ethylhexoxy)-p-phenylene vinylene] (MEH-PPV) in two solvents and several concentrations. Fluorescence spectra were recorded for solutions in several concentrations (10−5 mg/ml to 10−3 mg/ml), showing that tetrahydrofuran (THF) and toluene solvate the polymer chain differently. Dilute solution (10−5 mg/ml) in THF exhibit broader fluorescence spectra due to greater conformation disorder. The degree of the aggregation depends on both the solvent and the polymer concentration. Aggregation is promoted in toluene solution and hindered in THF solvent.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Polymer Journal - Volume 42, Issue 1, January 2006, Pages 228–233
نویسندگان
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