Poly microcavity

To get relevant information about active materials, the working electrode is made as similar as possible to the electrode of an operational device. However, current collectors are usually made with corrosion resistant materials, with good electronic conductivity, and no concern is taken about its relative mass. Materials such as gold, platinum, and vitreous carbon are commonly used. The active mass is usually tested in small amounts, mixed with electronically conducting materials, such as acetylene black, and a binder, such as poly vinylidene fluoride PVDF or polytetrafluoroethylene. The working electrode may be flat, with a 1 cm2 surface, for example, a rotating disk electrode (RDE), or a microcavity electrode, or any geometrical convenient electrode. 

Effect of aging on the permeability and molecular motion of the membranes of PMSP, poly(TMSP-co-PP) and blend of PMSP/PPP Glassy polymers, such as PMSP, are nonequilibiium materials and their permeation and sorption properties drift over time as thermally driven, small-scale polymer segmental motions cause a relaxation of nonequilibrium excess free volume. The microcavities of large size which are present in PMSP membrane have been considered to be responsible for the decay of C h and the gas permeability (4). Therefore, it is possible to stabilize the gas permeability by control the C by copolymerization or blending with the other acetylene derivatives such as PP and PPP, respectively. 

Pace S, Vasani RB, Cunin F, Voelcker NH (2013) Study of the optical properties of a thermore-sponsive polymer grafted onto porous silicon scaffolds. New J Chem 37 228 Pang-Leen O, Levitsky lA (2011) Fluorescent gas sensors based on nanoporous optical resonators (microcavities) infiltrated with sensory emissive polymers. Sens J IEEE 11 2947 Park JS, Meade SO, Segal E, Sailor MJ (2007) Porous silicon-based polymer replicas formed by bead patterning. Physica Stat Solidi a-Appl Mater Sci 204 1383 Perelman LA, Moore T, Singelyn J, Sailor MJ, Segal E (2010) Preparation and characterization of a pH- and thermally responsive poly(V-isopropylacrylamide-co-acrylic acid)/porous Si02 hybrid. Adv Funct Mater 20 826... 

Gain narrowing has been reported for PPV and several PPV derivatives [229] PPV [234] poly(2-butyl-5-(2 -ethylhexyl)-l-4-phenylene vinylene) [230] PPV microcavity [233] PPV with OCgHi7 side groups in the 2,5 positions [232] copolymer of phenylene vinylene [235] poly(dimethylsilane-p-phenylene vinyl-ene)-(2,5-di- -OCtyl-p-phenylene vinylene) [236]. 

---