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Energy transfer processes along a supramolecular chain of π-conjugated molecules by S. A. Schmid, R. Abbel, A. P. H. J. Schenning, E. W. Meijer, and L.

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Presentation on theme: "Energy transfer processes along a supramolecular chain of π-conjugated molecules by S. A. Schmid, R. Abbel, A. P. H. J. Schenning, E. W. Meijer, and L."— Presentation transcript:

1 Energy transfer processes along a supramolecular chain of π-conjugated molecules by S. A. Schmid, R. Abbel, A. P. H. J. Schenning, E. W. Meijer, and L. M. Herz Philosophical Transactions A Volume 370(1972):3787-3801 August 13, 2012 ©2012 by The Royal Society

2 Chemical structures, absorption (dashed line) and steady-state PL spectra (solid line) for (a) bis- UPy-terminated oligofluorene (UPy-OF-UPy) and (b) UPy-terminated oligo(p-phenylenevinylene) (UPy-OPV) in CHCl3, with being the molar extinction coefficient. S. A. Schmid et al. Phil. Trans. R. Soc. A 2012;370:3787- 3801 ©2012 by The Royal Society

3 Black open circles: measured time-resolved PL emitted at 2.75 eV from UPy-OF-UPy in UPy-OF- UPy : UPy-OPV blend solutions for three different mixing ratios x shown together with simulated PL decay curves obtained from different models described in the text (... S. A. Schmid et al. Phil. Trans. R. Soc. A 2012;370:3787- 3801 ©2012 by The Royal Society

4 (a) Probability ρ of exciton decay as a function of the distance Δx to the site of initial excitation (site 0) on a supramolecular chain, as obtained from Monte Carlo simulations averaging over 105 individual exciton trajectories on a chain of length Nchain... S. A. Schmid et al. Phil. Trans. R. Soc. A 2012;370:3787- 3801 ©2012 by The Royal Society

5 (a) PL intensity decay curves for solutions at two different mixing ratios (x=0.3 and x=4.0), simulated with intra-chain exciton migration or hetero-transfer being allowed (‘on’) and it being inhibited (‘off’). S. A. Schmid et al. Phil. Trans. R. Soc. A 2012;370:3787- 3801 ©2012 by The Royal Society


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