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Cover Picture: Effect of PCBM Concentration on Photoluminescence Properties of Composite MEH‐PPV/PCBM Nanoparticles Investigated by a Franck–Condon Analysis of Single‐Particle Emission Spectra (ChemPhysChem 14/2009)
Author(s) -
Tenery Daeri,
Gesquiere Andre J.
Publication year - 2009
Publication title -
chemphyschem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200990055
Subject(s) - nanoparticle , materials science , exciton , photoluminescence , particle (ecology) , composite number , heterojunction , delocalized electron , optoelectronics , nanotechnology , chemistry , composite material , physics , organic chemistry , oceanography , geology , quantum mechanics
The cover picture illustrates the use of composite organic nanoparticles to investigate structure‐property relationships of blended functional organic material systems at the molecular and nanoscale. The cartoon in the center shows the type of nanoparticles that were fabricated and studied. In the background, a TEM image of these nanoparticles can be seen in which the dark spots represent the location of individual nanoparticles. Clockwise from the bottom left corner, a photograph of nanoparticle suspensions under UV illumination, a single‐particle confocal fluorescence image, single‐particle spectral data fitted with a Franck‐Condon model, and a cartoon illustrating the concept of using nanoparticles as model systems to study the complex nanostructured active layer in bulk heterojunction organic photovoltaic devices are shown. On page 2449, D. Tenery and A. J. Gesquiere discuss the effects of material morphology and phase separation on exciton delocalization and collapse (trapping) in composite conjugated polymer/fullerene nanoparticles based on a detailed Franck‐Condon analysis of single‐particle emission spectra.