Search Results - "Young, Ralph H."

Solvent Dependence of Cationic-Exciplex Emission: Limitation of Solvent Polarity Functions and the Role of Hydrogen Bonding by Dinnocenzo, Joseph P, Tingson, Joshua, Young, Ralph H, Farid, Samir

“…Conventional exciplexes are products of excited-state charge generation reactions between neutral reactants (e.g., A* + D → A•–D•+), whereas cationic…”
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Reexamination of the Rehm–Weller Data Set Reveals Electron Transfer Quenching That Follows a Sandros–Boltzmann Dependence on Free Energy by Farid, Samir, Dinnocenzo, Joseph P, Merkel, Paul B, Young, Ralph H, Shukla, Deepak, Guirado, Gonzalo

“…In a landmark publication over 40 years ago, Rehm and Weller (RW) showed that the electron transfer quenching constants for excited-state molecules in…”
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Narrow-Line and Broadband Spectra of Iridium(III) Complexes in a Shpol'skii Matrix and an Amorphous Host by Marchetti, Alfred P, Deaton, Joseph C, Young, Ralph H

“…Narrow-line emission and excitation spectra of the lowest triplet state have been studied in a Shpol'skii host (n-octane) for three cyclometalated IrL2acac…”
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Mechanisms of Exciplex Formation. Roles of Superexchange, Solvent Polarity, and Driving Force for Electron Transfer by Gould, Ian R, Young, Ralph H, Mueller, Leonard J, Farid, Samir

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Bimolecular Electron Transfers That Follow a Sandros−Boltzmann Dependence on Free Energy by Farid, Samir, Dinnocenzo, Joseph P, Merkel, Paul B, Young, Ralph H, Shukla, Deepak

“…Rate constants (k) for exergonic and endergonic electron-transfer reactions of equilibrating radical cations (A•+ + B ⇌ A + B•+) in acetonitrile could be fit…”
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Transition from Charge-Transfer to Largely Locally Excited Exciplexes, from Structureless to Vibrationally Structured Emissions by Young, Ralph H., Feinberg, Adam M., Dinnocenzo, Joseph P., Farid, Samir

“…Exciplexes of 9,10‐dicyanoanthracene (DCA) with alkylbenzene donors in cyclohexane show structureless emission spectra, typical of exciplexes with…”
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Bimolecular Electron Transfers That Deviate from the Sandros–Boltzmann Dependence on Free Energy: Steric Effect by Luo, Pu, Dinnocenzo, Joseph P, Merkel, Paul B, Young, Ralph H, Farid, Samir

“…As we reported recently, endergonic to mildly exergonic electron transfer between neutral aromatics (benzenes and biphenyls) and their radical cations in…”
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Structural, thermal, and spectral characterization of the different crystalline forms of Alq3, tris(quinolin-8-olato)aluminum(III), an electroluminescent material in OLED technology by Rajeswaran, Manju, Blanton, Thomas N., Tang, Ching W., Lenhart, William C., Switalski, Steven C., Giesen, David J., Antalek, Brian J., Pawlik, Thomas D., Kondakov, Denis Y., Zumbulyadis, Nicholas, Young, Ralph H.

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Current-induced fluorescence quenching in organic light-emitting diodes by Young, Ralph H., Tang, Ching W., Marchetti, Alfred P.

“…The electroluminescence quantum efficiency of organic light-emitting diodes with a doped Alq [tris(8-quinolinolato)aluminum] emitting layer is found to…”
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Reducing Power of Photogenerated α-Hydroxy Radicals. Proton-Coupled Electron Transfer by Shukla, Deepak, Young, Ralph H, Farid, Samir

“…Proton-coupled electron transfer (PCET) has been reported in a number of systems. The oxidation product of a disubstituted α-hydroxy radical is a protonated…”
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Photophysical Properties of the Series fac- and mer-(1-Phenylisoquinolinato-N∧C2′ ) x (2-phenylpyridinato-N∧C2′ )3−x Iridium(III) (x = 1−3) by Deaton, Joseph C, Young, Ralph H, Lenhard, Jerome R, Rajeswaran, Manju, Huo, Shouquan

“…The photophysical properties of tris-cyclometalated iridium(III) complexes have been probed by chemical and geometric variation through the series fac- and…”
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Contact and solvent-separated geminate radical ion pairs in electron-transfer photochemistry by Gould, Ian R, Young, Ralph H, Moody, Roger E, Farid, Samir

“…The two primary intermediates that play a major role in determining the efficiencies of bimolecular photoinduced electron-transfer reactions are the contact…”
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Charge carriers and charge-transfer reactions in OLED devices studied by electron paramagnetic resonance by Pawlik, Thomas D., Kondakov, Denis Y., Begley, William J., Young, Ralph H.

“…— Electron paramagnetic resonance (EPR) was used as a quantitative method to measure charge carriers that are present in OLED devices under various bias…”
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Charge-retraction time-of-flight measurement for organic charge transport materials by Wallace, Jason U., Young, Ralph H., Tang, Ching W., Chen, Shaw H.

“…This letter describes an all-electrical technique, charge-retraction time-of-flight (CR-TOF), to measure charge carrier mobility through an organic layer…”
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E-Type Delayed Fluorescence of a Phosphine-Supported Cu2(μ-NAr2)2 Diamond Core: Harvesting Singlet and Triplet Excitons in OLEDs by Deaton, Joseph C, Switalski, Steven C, Kondakov, Denis Y, Young, Ralph H, Pawlik, Thomas D, Giesen, David J, Harkins, Seth B, Miller, Alex J. M, Mickenberg, Seth F, Peters, Jonas C

“…A highly emissive bis(phosphine)diarylamido dinuclear copper(I) complex (quantum yield = 57%) was shown to exhibit E-type delayed fluorescence by variable…”
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Electronic Structures of Exciplexes and Excited Charge-Transfer Complexes by Gould, Ian R, Young, Ralph H, Mueller, Leonard J, Albrecht, A. C, Farid, Samir

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Charge-Induced Luminescence Quenching in Organic Light-Emitting Diodes by Haskins, Terri, Chowdhury, Arabinda, Young, Ralph H, Lenhard, Jerome R, Marchetti, Alfred P, Rothberg, Lewis J

“…We use charge modulation spectroscopy (CMS) in model holes-only devices to address the reason for decreasing quantum efficiency with increasing drive current…”
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Dipole Moments, Energetic Disorder, and Charge Transport in Molecularly Doped Polymers by Young, Ralph H, Sinicropi, John A, Fitzgerald, John J

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E-Type Delayed Fluorescence of a Phosphine-Supported Cu 2 (μ-NAr 2 ) 2 Diamond Core: Harvesting Singlet and Triplet Excitons in OLEDs by Deaton, Joseph C., Switalski, Steven C., Kondakov, Denis Y., Young, Ralph H., Pawlik, Thomas D., Giesen, David J., Harkins, Seth B., Miller, Alex J. M., Mickenberg, Seth F., Peters, Jonas C.

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Kinetics of Isomerization via Photoinduced Electron Transfer. I. Spectral Analysis and Structural Reorganization of Hexamethyl Dewar Benzene Exciplexes by Kiau, Susanne, Liu, Guanghua, Shukla, Deepak, Dinnocenzo, Joseph P, Young, Ralph H, Farid, Samir

“…It is well recognized that emission spectra from the reactions of excited-state electron acceptors (A*) with hexamethyl Dewar benzene (D) are typically…”
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