کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403269 | 1392756 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Single particle spectroscopy on composite MEH-PPV/PCBM nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The preparation and characterization of composite MEH-PPV/PCBM nanoparticles with doping levels up to 75Â wt% PCBM is reported. These nanoparticles represent structures in between single molecules and bulk that allow for a detailed investigation of the role of nanostructure on the properties of the corresponding functional materials. Combining this material system with single particle spectroscopy studies reveals molecular scale information on the extent to which variations in polymer chain folding and interactions between polymer chains and fullerenes affect material morphology and photophysical properties. Key observations are that the single particle ensemble spectra shift with respect to each other depending on PCBM doping levels, and that the vibronic structure of the single particle ensemble spectra changes with PCBM doping levels. These observations are indicative of a reduction in conducting polymer conjugation length and interchain interactions due to steric effects caused by the presence of PCBM that result in reduced exciton transport.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 129, Issue 5, May 2009, Pages 423-429
Journal: Journal of Luminescence - Volume 129, Issue 5, May 2009, Pages 423-429
نویسندگان
Daeri Tenery, James G. Worden, Zhongjian Hu, Andre J. Gesquiere,