Zobrazeno 1 - 10
of 22
pro vyhledávání: '"John A. Osaheni"'
Autor:
Wenqing Peng, John Brian McDermott, John Aibangbee Osaheni, William David Richards, Peter L. Perez, A. Kate Gurnon, Lishun Hu, Kelly Scott Chichak, Xiaoan Xie, Julia Lee, Eugene Pauling Boden
Publikováno v:
All Days.
The performance of paraffin inhibitors from several chemical families was evaluated using two model waxy oils in bench-top tests such as cloud point and pour point, and in small-scale deposition rigs using a cold finger and a flow loop. In addition,
Publikováno v:
Macromolecular Symposia. 169:261-268
The shelf stability of uncured silicone elastomers is of fundamental interest to the silicone industry because most formulations are sold in the uncured state for further processing. An increase in viscosity of a filled silicone elastomer with time,
Publikováno v:
Petroleum Science and Technology. 17:759-781
An estimate of the quantity of toxic coke deposited on fresh and regenerated Pt/Al 2 O 3 catalyst has been determined for methylcyclopentane (MCP) reforming in a Berty CSTR at 390°C, W/F=0.11 g.min/cm 3 , total pressure of 1 atm and MCP partial pres
Publikováno v:
Optical Materials. 4:685-689
We demonstrate a fast and simple technique of patterning insoluble, nonbleachable, conjugated polymer films into channel waveguides by striploading with photoresist. Two types of coupling gratings were tested for this new system. The coupling paramet
Autor:
John A. Osaheni, Samson A. Jenekhe
Publikováno v:
Journal of the American Chemical Society. 117:7389-7398
Two series of electroactive and photoactive rod-coil copolymers have been designed, synthesized, and investigated to explore a new structural motif for organizing molecular and macromolecular materials at the supramolecular structure level for enhanc
Autor:
John A. Osaheni, Samson A. Jenekhe
Publikováno v:
Chemistry of Materials. 7:672-682
The effects of molecular structure on the electronic structure and electrochemical and linear optical properties of a series of pi-conjugated rigid-rod polybenzobisazoles, including three new polymers, were explored by cyclic voltammetry and measurem
Autor:
Russell J. Gehr, John E. Sipe, Robert W. Boyd, George L. Fischer, Samson A. Jenekhe, John A. Osaheni, Laura A. Weller-Brophy
Publikováno v:
Physical Review Letters. 74:1871-1874
We present experimental results which demonstrate that the effective third-order susceptibility of a composite optical material can exceed those of the materials from which it is constructed. In particular, we have formed a composite of alternating,
Publikováno v:
The Journal of Physical Chemistry. 98:12727-12736
The quantum yield and the mechanism of photogeneration of charge carriers are investigated in bilayer assemblies consisting of a pi-conjugated rigid-rod polymer layer and a triarylamine doped polycarbonate layer. The electric field dependent quantum
Autor:
Samson A. Jenekhe, John A. Osaheni
Publikováno v:
Chemistry of Materials. 6:1906-1909
Solid-state luminescence of polymers is currently of theoretical interest as well as for application in electroluminescent diodes. The role of supramolecular structure and morphology on solid-state luminescence of polymers is explored in rod-coil cop
Autor:
Samson A. Jenekhe, John A. Osaheni
Publikováno v:
Science. 265:765-768
Observations of intermolecular excimers in several pi-conjugated polymers and exciplexes of these polymers with tris(p-tolyl) amine are reported. It is shown that the luminescence of conjugated polymer thin films originates from excimer emission and