Poly(p-phenylene vinylene) incorporated into carbon nanostructures

Photophysics of Poly(p-Phenylene Vinylene) Films

We report on time resolved photoluminescence (PLRT) measurements in poly(p-phenylene vinylene) (PPV) films irradiated by laser in the presence of air. We observe a PL intensity enhancement and a biexponential decay dynamics of PL signal for all irradiated films. These results can be understood in terms of a chain shortening process due to carbonyl incorporation and formation of an energy profil...

Excitation Transfer in Poly-(p -phenylene Vinylene)

Electroluminescent conjugated polymers such as poly-(p-phenylene vinylene) (PPV) are at the brink of being extensively used commercially as light emitting devices. A continuous flow of both theoretical and experimental studies elucidate many still unresolved issues of polymer photophysics. Among the processes under debate are the different energy transfer pathways. This work studies one such pa...

Blinking suppression and intensity recurrences in single CdSe-oligo(phenylene vinylene) nanostructures: experiment and kinetic model.

We report time-resolved single molecule fluorescence imaging of individual CdSe quantum dots that are functionalized with oligomeric conjugated organic ligands. The fluorescence intensity trajectories from these composite nanostructures display both a strong degree of blinking suppression and intensity fluctuations with characteristic recurrence times on the order of 10-60 s. In addition, fluor...

Hole blocking in carbon nanotube–polymer composite organic light-emitting diodes based on poly (m-phenylene vinylene-co-2, 5-dioctoxy-p-phenylene vinylene)

Introduction of methyl groups on vinylene segments of phenylene vinylene systems: synthesis and properties.

A facile synthetic route towards phenylene vinylene systems with methyl substituents at the vinyl linkages is demonstrated through palladium catalyzed Heck coupling of 1,4-diisopropenylbenzene with aryl bromides. The coupling leads to a series of model compounds that feature, in some cases, direct access to a trans-configuration at the double bonds. The oxidative stability of these systems is s...