Toward efficient photomodulation of conjugated polymer emission: Optimizing differential energy transfer in azobenzene-substituted PPV derivatives

Article Abstract:

The fluorescence studies of quenching behavior in photoaddressable azobenzene-substituted derivatives of the fluorescent conjugated polymer poly(p-phenylenevinylene) (PPV) are presented. The results show the possibility of controlling the efficiency of photoswitchable fluorescence modulation through specific structural variations designed to encourage or block quenching by trans-azobenzene.

Atomic properties

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Energy transfer mediated fluorescence from blended conjugated polymer nanoparticles

Article Abstract:

The energy transfer mediated fluorescence from conjugated polymer nanoparticles consisting of polyfluorene (PF) doped with three different conjugated polymer acceptors is reported. An energy transfer model is developed that yields population-averaged quenching efficiencies for the case of a statistical distribution of a small number of highly efficient energy acceptors per nanoparticle.

Optical properties, Chemical properties, Nanoparticles

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Fluorescence modulation via isomer-dependent energy transfer in an azobenzene-functionalized poly(phenylenevinylene) derivative

Article Abstract:

Fluorescence studies of poly(2-methoxy-5-(4-(phenylazo)phenyl-4'-(1,10-dioxydecyl))-1,4-phenylenevinylene) (MPA-10-PPV), a PPV derivative with alkyl-tethered azobenzene side chains is presented. The energy transfer sensitizes the cis to trans azobenzene isomerization, which alters the composition -10-PPV.

Spectra, Isomerization, Energy transfer

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