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1. π ELECTRON DELOCALIZATION IN POLY-(p-PHENYLENE) ( PPP), POLYPHENYLENE SULFIDE (PPS) AND POLYPHENYLENE OXIDE ( PPO) AND AsF5 DOPING OF PPP

J. Fink, G. Crecelius, J.J. Ritsko, M. Stamm, H.J. Freund, H. Gonska,

Les largeurs des bandes π dans le poly-(p-phénylène), le sulfure de polyphénylène et l'oxyde de polyphénylène sont déterminées par les expériences de pertes d'énergie d'électrons. Une estimation de la...

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2. π--p Interactions at 604 MeV

Fickinger, William, Vititoe, C. N., Riley, B. R., Kenney, V. P., Mowat, J. G., Shephard, W. D.,

The interactions of 604 MeV π- mesons in a hydrogen bubble chamber have been systematically analyzed. In 33 000 pictures a total of 8052 usable events were found, corresponding to cross sections of 18...

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3. π-Conjugated Donor-Acceptor Systems as Metal-Free Sensitizers for Dye-Sensitized Solar Cell Applications

M. Wielopolski, J.-E. Moser, M. Marszalek, S. M. Zakeeruddin, M. Grätzel,

High extinction coefficients and easily tunable spectral properties of π- conjugated donor-acceptor dyes are of superior advantage for the design of new metalfree organic sensitizers for applications ...

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4. π-Molecular complexes: A modified CNDO study of the benzene-borazine system

Grein, F., Weiss, K.,

The standard CNDO/2 method is shown to be unable to produce meaningful potential curves for π-π-type molecular complexes. A modification of this method in which pairs of atoms associated with the same...

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5. π-bonding in B-O ring species: Lewis acidity of Me3B3O3, synthesis of amine Me3B3O3 adducts, and the crystal and molecular structure of Me3B3O3.NH2iBu.MeB(OH)(2)

Beckett, Michael A., Brassington, David S., Owen, Paul, Hursthouse, Michael B., Light, Mark E., Mali...

The synthesis and characterisation (m.p., elemental analysis, IR, NMR) of some previously unreported Me3B3O3. L adducts (L=piperidine, isobutylamine, morpholine, 3-picoline, benzylamine) are described...

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6. π-dimerization of pleiadiene radical cations at low temperatures revealed by UV–vis spectroelectrochemistry and quantum theory

van het Goor, L., van Duijnen, P. Th., Koper, C., Jenneskens, L. W., Havenith, R. W. A., Hartl, Fran...

One-electron oxidation of the non-alternant polycyclic aromatic hydrocarbon pleiadiene and related cyclohepta[ c,d]pyrene and cyclohepta[c,d]fluoranthene in THF produces corresponding radical cation...

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7. π-p→π0π0n near threshold and chiral symmetry breaking

Fickinger, William, Lowe, J., Bassalleck, B., Burkhardt, H., Hall, J. R., Hassinoff, M. D., Horvath,...

Total cross sections, angular, and mass distributions for the reaction π-p→π0π0n have been measured for pπ-(lab)=7–140 MeV/c above threshold. The threshold amplitude was used to determine a value for ...

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8. ππ scattering in the energy region 0.6 to 1.42 GeV

Fickinger, William, Engler, A., Kraemer, R. W., Toaff, S., Weisser, F., Diaz, J., DiBlanca, F. A., R...

ππ scattering amplitudes have been determined in the energy range 0.6 to 1.42 GeV. The amplitudes have been extracted in the framework of an absorption-modified one-pion-exchange model with certain en...

complete description

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