Tuning of MEH-PPV electro-optical properties by incorporation of benzylidene-malononitrile-based small organic molecules

Coupling of photoactive transition metal complexes to a functional polymer matrix**

“…In order to validate the reliability of our results, we start the presentation of our results with a comparison of the calculated electronic properties of the PPV polymer, such as the work function, the position of HOMO and LUMO levels, and the energy gap, with the corresponding experimental results[ 15 , 52 , 53 , 54 , 55 ] (see Table 1 ). We have evaluated the electronic properties of the polymer in the structure relaxed with the PBE functional using the different functionals, PBE and the hybrid functionals B3LYP and PBE0.…”

“…The peaks of the LDOS at the Ru atom are at different energetic positions. Furthermore, the [15,[52][53][54] 4.000 [55] À 4.90 to À 5.41 [15,[52][53][54] À 2.70 to À 3.01 [15,[52][53][54] LUMO of the Ru2 complex is found at higher energies with respect to the valence band edge of the polymer, overall a considerably modified electronic structure results. In summary, the results presented in Figure 3 show that the electronic properties of the polymer are hardly modified by attaching the Ru complex, irrespective of the nature of the two substituents used.…”

Improving the electrical properties of poly[2‐methoxy‐5‐(2‐ethylhexyloxy)‐1,4‐phenylenevinylene] by doping with camphor sulfonic acid for energy storage applications

“…10 It has been mostly investigated as an electron donor material for optoelectronic applications. 11,12 Most studies on MEH-PPV have tried to improve its optical and electrical properties by using different dopant materials. For example, the study of Dhifaoui et al on the electro-optical properties of MEH-PPV:DABMN (p-N,N-dimethyl-amino-benzylidene-malononitrile) thin films showed that the photoluminescence (PL) emission spectra exhibited significant quenching around 590 nm and 635 nm concerning the charge transfer phenomenon.…”

“…For example, the study of Dhifaoui et al on the electro-optical properties of MEH-PPV:DABMN (p-N,N-dimethyl-amino-benzylidene-malononitrile) thin films showed that the photoluminescence (PL) emission spectra exhibited significant quenching around 590 nm and 635 nm concerning the charge transfer phenomenon. 12 For UV absorption ability, Ghosh et al have shown a slightly red-shift from 500 to 505 nm for MEH-PPV in THF (tetrahydrofuran). 13 Besides its optical properties, the electrical properties of MEH-PPV have been examined in terms of DC conductivity and dielectric features.…”

“…Particularly, poly[2‐methoxy‐5‐(2‐ethylhexyloxy)‐1,4‐phenylenevinylene] or shortly MEH‐PPV has been preferable conducting polymer as a derivative of PPV due to its lightweight, processability, and environmental stability for electronic and optoelectronic devices 10 . It has been mostly investigated as an electron donor material for optoelectronic applications 11,12 . Most studies on MEH‐PPV have tried to improve its optical and electrical properties by using different dopant materials.…”