Photoluminescence of Self-organized Perylene Bisimide Polymers

Neuteboom, Edda E.; Meskers, Stefan C. J.; Meijer, E. W.; Janssen, Raj René

doi:10.1002/macp.200300044

Cited by 109 publications

(121 citation statements)

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“…[26] To a lesser extent, this long-wavelength feature is also present in the PL spectra of octads 3 and 4. By using the technique quantitative fluorimetry [27,28] in chloroform at room temperature, the fluorescence QYs were measured to be 11.2 % for octad 2, whereas for octads 1, 3 and 4 the values were found to be much lower (< 1 %; Table 2).…”

Section: Resultsmentioning

confidence: 96%

Multichromophoric Phthalocyanine–(Perylenediimide)₈ Molecules: A Photophysical Study

Albert‐Seifried

Finlayson

Laquai

et al. 2010

Chemistry A European J

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We describe the synthesis of a series of phthalocyanine (Pc)-perylenediimide (PDI)(8) "octad" molecules, in which eight PDI moieties are attached to a Pc core through alkyl-chain linkers. There is clear spectroscopic evidence that these octads can exist as non-aggregated "monomers" or form aggregates along the Pc cores, depending on the type of Pc and the solvent medium. In the low dielectric constant solvents, into which the octads are soluble, photoexcitation of the PDI units leads to rapid energy transfer to the Pc centre, rather than a charge separation between moieties. In octad monomers, the Pc singlet excited-state decays within tens of ps, whereas the excitons are stabilised in the aggregated form of the molecules, typically with lifetimes in the order of 1-10 ns. By contrast, in an octad design in which pi-pi interactions are suppressed by the steric hindrance of a corona of incompatible glycol tails around the molecule, a more straightforward photophysical interaction of Förster energy transfer between the PDI moieties and Pc core may be inferred. We consider these molecules as prototypical multichromophoric aggregates, giving delocalised states with considerable flexibility of design.

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Section: Resultsmentioning

confidence: 96%

Multichromophoric Phthalocyanine–(Perylenediimide)₈ Molecules: A Photophysical Study

Albert‐Seifried

Finlayson

Laquai

et al. 2010

Chemistry A European J

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“…[13][14][15][16] As such, preventing dye aggregation is of key importance for designing fluorescent organic materials which employ FRET. 17,18 Perylene-diimides (PDIs) have found applications in light harvesting systems, organic electronic devices and LSCs due to their range of hues from red to violet, excellent solvent stability, high degree of chemical inertness, and superior thermal stability. [18][19][20] As expected for extended π-systems with a large quadrupole moment, PDIs are prone to forming excitation-quenching aggregates at high concentrations.…”

Section: Introductionmentioning

confidence: 99%

“…17,18 Perylene-diimides (PDIs) have found applications in light harvesting systems, organic electronic devices and LSCs due to their range of hues from red to violet, excellent solvent stability, high degree of chemical inertness, and superior thermal stability. [18][19][20] As expected for extended π-systems with a large quadrupole moment, PDIs are prone to forming excitation-quenching aggregates at high concentrations. Aggregation is greatly decreased by functionalising the diimide end-groups with bulky substituents that impede cofacial π-π interactions between the PDIs.…”

Section: Introductionmentioning

confidence: 99%

Energy transfer in pendant perylene diimide copolymers

et al. 2016

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We report the synthesis, characterisation and polymerisation of two novel asymmetric perylene diimide acrylate monomers. The novel monomers form a sensitiser-acceptor pair capable of undergoing Förster resonance energy transfer, and were incorporated as copolymers with tert-butyl acrylate. The tert-butyl acrylate units act as spacers along the polymer chain allowing high concentrations of dye while mitigating aggregate quenching, leading to persistent fluorescence in the solid state at high concentrations of up to 0.3 M. Analysis of fluorescence kinetics showed efficient energy transfer between the optically dense sensitiser and the lower concentration acceptor luminophores within the polymer. This reduced reabsorption within the material demonstrates that the copolymer-scaffold energy transfer system has potential for use in luminescent solar concentrators.

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“…unstructured emission may prevent a straightforward evaluation of R S [65][66][67]. Excimer emission also implies the presence of low-frequency intermolecular vibrations which will perturb the intermolecular interactions.…”

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confidence: 96%

Determining the spatial coherence of excitons from the photoluminescence spectrum in charge-transfer J-aggregates

Hestand

Spano

2016

Chemical Physics

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The importance of spatial coherence in energy and charge transfer processes in biological systems and photovoltaic devices has been hotly debated over the past several years. While larger spatial coherences are thought to benefit transport, a clear correlation has yet to be established, partly because a simple and accurate measure of the coherence length has, for the most part, remained elusive. Previously, it was shown that the number of coherently connected chromophores, Coh N , can be determined directly from the ratio ( R S ) of the 0-0 and 0-1 vibronic line strengths in the photoluminescence (PL) spectrum. The relation,where 2 0 λ is the associated Huang-Rhys parameter, was derived in the Frenkel exciton limit. Here, it is shown that R S remains a highly accurate measure of coherence for systems characterized by significant charge transfer interactions (e.g. conjugated π-stacked systems). The only requirement is that the exciton band curvature must be positive, as in a J-aggregate.

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Photoluminescence of Self-organized Perylene Bisimide Polymers

Cited by 109 publications

References 10 publications

Multichromophoric Phthalocyanine–(Perylenediimide)₈ Molecules: A Photophysical Study

Multichromophoric Phthalocyanine–(Perylenediimide)₈ Molecules: A Photophysical Study

Energy transfer in pendant perylene diimide copolymers

Determining the spatial coherence of excitons from the photoluminescence spectrum in charge-transfer J-aggregates

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Photoluminescence of Self-organized Perylene Bisimide Polymers

Cited by 109 publications

References 10 publications

Multichromophoric Phthalocyanine–(Perylenediimide)8 Molecules: A Photophysical Study

Multichromophoric Phthalocyanine–(Perylenediimide)8 Molecules: A Photophysical Study

Energy transfer in pendant perylene diimide copolymers

Determining the spatial coherence of excitons from the photoluminescence spectrum in charge-transfer J-aggregates

Contact Info

Product

Resources

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Multichromophoric Phthalocyanine–(Perylenediimide)₈ Molecules: A Photophysical Study

Multichromophoric Phthalocyanine–(Perylenediimide)₈ Molecules: A Photophysical Study