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Electroactive polymers: Characteriza...

Petach, Helen Hurrell.

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Electroactive polymers: Characterization and applications.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Electroactive polymers: Characterization and applications./
Author:	Petach, Helen Hurrell.
Description:	140 p.
Notes:	Source: Dissertation Abstracts International, Volume: 50-09, Section: B, page: 3987.
Contained By:	Dissertation Abstracts International50-09B.
Subject:	Chemistry, Inorganic. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8924559

Electroactive polymers: Characterization and applications.
Petach, Helen Hurrell.

Electroactive polymers: Characterization and applications. - 140 p.

Source: Dissertation Abstracts International, Volume: 50-09, Section: B, page: 3987.

Thesis (Ph.D.)--Cornell University, 1989.

Polymeric reagents were used to modify electrode surfaces, providing films for catalytic and analytical applications. The characterization of charge transport, an essential feature of these polymer films as electrocatalysts, was also investigated.Subjects--Topical Terms:

517253
Chemistry, Inorganic.

Electroactive polymers: Characterization and applications.
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040 $a UnM $c UnM
100 1 $a Petach, Helen Hurrell. $3 1943482
245 1 0 $a Electroactive polymers: Characterization and applications.
300 $a 140 p.
500 $a Source: Dissertation Abstracts International, Volume: 50-09, Section: B, page: 3987.
502 $a Thesis (Ph.D.)--Cornell University, 1989.
520 $a Polymeric reagents were used to modify electrode surfaces, providing films for catalytic and analytical applications. The characterization of charge transport, an essential feature of these polymer films as electrocatalysts, was also investigated.
520 $a The cobalt complexes of 4 $\ sp\prime $- vinyl-2,2 $\ sp\prime $: 6 $\ sp\prime $, 2 $\ sp{\prime\prime} $- terpyridine and 4 $\ sp{\prime\prime\prime} $- vinyl-2,2 $\ sp\prime $: 6 $\ sp\prime $, 2 $\ sp{\prime\prime} $: 6 $\ sp{\prime\prime} $, 2 $\ sp{\prime\prime\prime} $: 6 $\ sp{\prime\prime\prime} $, 2 $\ sp{\prime\prime\prime\prime} $- quinquepyridine, (Co(v-terpy) $\ sb2 $) $\ sp{2+} $ and (Co(v-quinpy)) $\ sp{2+} $, respectively, were electropolymerized onto electrode surfaces. The (Co(v-terpy) $\ sb2 $) $\ sp{2+} $ polymer was found to electrocatalytically reduce oxygen, lowering the potential required for the four electron reduction by 300 mV. Carbon dioxide was also catalytically reduced at 1 V less than that observed without the catalyst. The (Co(v-quinpy)) $\ sp{2+} $ polymer was similarly active for the catalytic reduction of oxygen, but no catalytic reduction of carbon dioxide was observed.
520 $a Polymer modified microelectrodes were used for analytical determinations of iron and calcium. The copolymer of vinyl-ferrocene and v-bpy (v-bpy is 4-vinyl-4 $\ sp\prime $- methyl-2,2 $\ sp\prime $- bipyridine) preconcentrated Fe(II) from solution by formation of a complex with the v-bpy in the copolymer. Polybenzylviologen, via ion exchange, incorporated antipyrylazo III which then preconcentrates calcium by formation a complex. In both cases the electrochemical signal from the Fe(II) or the antipyrylazo III-calcium complex was used to generate a calibration curve. These electrodes exhibit submicromolar sensitivity and a dynamic range that extends over three orders of magnitude.
520 $a Conductances were measured in mixed valent electropolymerized films of transition metal complexes of the type poly- (M(v-bpy) $\ sb{\rm n} $( L) $\ sb{\rm m} $) (where M = Os, Ru, Fe, Co; L = cyano, phenanthroline derivatives). The conductance trends correlated with the atomic radius of the metal center, backbonding ability of the ligands, and distance between localized states. The mechanism of charge transport was investigated by examining the influence of temperature, solvent and electrolyte on the conductances. Solvent effects paralleled outer sphere electron transfer in solution as described by Marcus Theory.
590 $a School code: 0058.
650 4 $a Chemistry, Inorganic. $3 517253
650 4 $a Chemistry, Polymer. $3 1018428
690 $a 0488
690 $a 0495
710 2 0 $a Cornell University. $3 530586
773 0 $t Dissertation Abstracts International $g 50-09B.
790 $a 0058
791 $a Ph.D.
792 $a 1989
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8924559