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Optical techniques to characterize polymer systems
TLDR
In this article, the authors used FTIR spectroscopy of molecular orientation in monomolecular layers of polymers on solid substrates to measure the structure and interactions measured by electronic excitation transport.Abstract:
FTIR-spectroscopy of polymers (J.L. Koenig). Studies by FTIR spectroscopy of molecular orientation in monomolecular layers of polymers on solid substrates (T. Arndt, G. Wegner). Glass dynamics probed by motional line narrowing of reactions in polymers via absorption spectroscopy of photochromism (R. Richert). Photoelectron spectroscopy of polymers (K. Seki). Site-selective fluorescence spectroscopy of polymers (H. Bassler). Triplet state spectroscopy of polymers (R.D. Burkhart). Polymers in solids: structure and interactions measured by electronic excitation transport (K.A. Peterson et al.). Nonlinear optical spectroscopy of polymers (E. Cavicchi et al.). Resonance Raman spectroscopy of conjugated polymers (D.N. Batchelder). Brillouin spectroscopy and its application to polymers (J.H. Kruger). Photon correlation spectroscopy of amorphous bulk polymers and compatible polymer blends (G. Meier, G. Fytas). Synchrotron radiation X-ray scattering (M.H.J. Koch). Subject Index.read more
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Charge transport in disordered molecular solids
TL;DR: In this paper, the authors measured hole mobilities in vapor deposited films of 1,1,bis(di−4−tolylaminophenyl)cyclohexane (TAPC) and TAPC•doped bisphenol•A•polycarbonate (BPPC) and showed that the observed behavior is a signature of the simultaneous presence of diagonal and off-diagonal disorder.
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Hypersonic phononic crystals.
TL;DR: This work reports the fabrication of high quality, single crystalline hypersonic crystals using interference lithography and shows that direct measurement of their phononic band structure is possible with Brillouin light scattering.
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Hole transport in 1,1‐bis(di‐4‐tolylaminophenyl)cyclohexane
TL;DR: In this article, Monte Carlo simulations of random walk in a geometrically and energetically disordered medium demonstrate that the time dependence of the photocurrent and the field and temperature dependencies of the mobility can be described quantitatively in terms of the inherent disorder and its effect on charge transport.
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Conformational effects in poly(p-phenylene vinylene)s revealed by low-temperature site-selective fluorescence
Susanne Heun,Rainer F. Mahrt,Andreas Greiner,U. Lemmer,Heinz Bässler,D. A. Halliday,Donal D. C. Bradley,Paul L. Burn,Andrew B. Holmes +8 more
TL;DR: In this article, low-temperature site-selective fluorescence (SSF) spectroscopy is employed to study morphological effects on the conformation of poly(p-phenylene vinylene) and its phenyl-substituted, soluble derivative poly(phenylphenylenevinylene) (PPPV).
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Femtosecond site-selective probing of energy relaxing excitons in poly(phenylenevinylene): Luminescence dynamics and lifetime spectra
TL;DR: In this article, a forward reconvolution fit procedure based on a microscopic incoherent transport model, including diagonal disorder, dipolar intersite coupling, and a density-of-states (DOS) of molecular site excitations, is presented.