Hole diffusion in triarylamine polymer films in a contacting electrolyte: initial comparison with hole mobilities

Facci, John S.; Abkowitz, M.; Limburg, W. W.; Knier, F. E.; Yanus, J. F.; Renfer, Dale S.

doi:10.1021/j100173a065

Cited by 21 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The latter barrier heights are estimated from published values of substrate contact work functions 9 together with our estimate of the transport molecule ionization potential ͑5.5 eV͒ based on the measured value of the electrochemical half wave potential of neutral TPD and its analogs in solution. 10 Such estimates have an uncertainty associated with them because of the difference in the solvent and MDP polarization energies. A value of Ϫ4.7 V was assumed for the electrochemical potential of the ͑saturated calomel electrode͒ SCE in the conversion of the electrochemical potential scale to the vacuum scale.…”

Section: Resultsmentioning

confidence: 99%

Direct evaluation of contact injection efficiency into small molecule based transport layers: Influence of extrinsic factors

Abkowitz

Facci

Rehm

1998

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Direct evaluation of contact injection efficiency into small molecule based transport layers: Influence of extrinsic factors

Abkowitz

Facci

Rehm

1998

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…Facci et al 37 measured the reorganization energy of N,N 0 -(3-hydroxyphenyl)-N,N 0 -diphenyl-4,4 0 -diaminobiphenyl (m-(OH) 2 TPB, see Fig. 4) in acetonitrile with 0.1 mol L À1 ions to be l exp =0.99 eV.…”

Section: Comparison With Experimental Datamentioning

confidence: 99%

“…4) in acetonitrile with 0.1 mol L À1 ions to be l exp =0.99 eV. 37 This value is extracted from the slope of an Arrhenius plot of the temperature dependence of the hole diffusion coefficient acquired by cyclic voltametry. 37 We calculate the total reorganization energy of the same compound using an apparent dielectric constant of À e st = 71.31 to account for the ions in acetonitrile.…”

Section: Comparison With Experimental Datamentioning

confidence: 99%

Influence of polar medium on the reorganization energy of charge transfer between dyes in a dye sensitized film

Vaissier

Barnes

Kirkpatrick

et al. 2013

Phys. Chem. Chem. Phys.

102

View full text Add to dashboard Cite

We study the kinetics of the lateral hole transfer occurring between dye molecules anchored at the surface of the metal oxide in Dye Sensitized Solar Cells (DSSC). We use Marcus' charge transfer rate equation for which we need the electronic coupling between two molecules (J) and the reorganization energy (λtot). In DSSC the medium surrounding the dyes is highly polar. This means that the contribution of the solvent to the reorganization energy cannot be neglected. Here we elaborate a method to calculate, from first principles, the total (i.e., inner- and outer-sphere) reorganization energy of hole exchange between ruthenium dyes. The influence of the solvent and of the ions in the solvent is incorporated. The inner-sphere reorganization energy depends on the nature of the dye, 0.1 eV for ruthenium dyes with CN ligands, 0.2 eV for ruthenium dyes with NCS ligands. In acetonitrile, the solvent reorganization energy contributes for at least 80% of the total giving a total reorganization energy of around 0.86 eV for ruthenium dyes with CN ligands and 0.95 eV for ruthenium dyes with NCS ligands. We use these results to estimate the rate of hole transfer within Marcus theory. We suggest that low diffusion coefficients observed experimentally may arise from the high polarity of the medium rather than by the chemical structure of the dye.

show abstract

“…chromophorization-synthesizing an electro-optic (EO) chromophore incorporated aldehyde (P4) can be further modified into a range of application-specific molecules, including extension into an EO chromophore, hole-transport and photovoltaic materials [29,34,36,37]. EAS reaction on these PFCP aryl ether polymers demonstrates the accessibility of these TAA moieties for further post polymerization modifications, which extends the overall versatility of this polymeric system.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

Triarylamine-enchained semifluorinated perfluorocycloalkenyl (PFCA) aryl ether polymers

et al. 2014

View full text Add to dashboard Cite

A variety of perfluorocycloalkenyl (PFCA) aryl ether monomers and polymers with enchained triarylamine units were successfully synthesized, characterized and reported here. These polymers are highly thermally stable and show variable thermal properties. Successful conversion of the newly synthesized TAA enchained perfluorocyclopentenyl (PFCP) aryl ether polymers via formylation and EAS demonstrates the synthetic versatility of TAA moiety and provides an excellent option for application specific post polymerization reactions. The cross-linking behavior of PFCP aryl ether polymers was studied under different reaction conditions. The combination of processability, thermal stabilities, and tailorability makes these polymers suitable for a wide variety of applications including electro-optics, proton exchange membranes and super-hydrophobic applications.

show abstract

Hole diffusion in triarylamine polymer films in a contacting electrolyte: initial comparison with hole mobilities

Cited by 21 publications

References 0 publications

Direct evaluation of contact injection efficiency into small molecule based transport layers: Influence of extrinsic factors

Direct evaluation of contact injection efficiency into small molecule based transport layers: Influence of extrinsic factors

Influence of polar medium on the reorganization energy of charge transfer between dyes in a dye sensitized film

Triarylamine-enchained semifluorinated perfluorocycloalkenyl (PFCA) aryl ether polymers

Contact Info

Product

Resources

About