Synthesis and characterization of redox active polymers at surfaces

Miscellaneous · Wed Jan 01 00:00:00 EST 1992

OSTI ID:7267200

Palmore, G T.R.

Chapter 1. This chapter presents the basic elements of cyclic voltammetry of electroactive solution and surface confined species, surface attachment of siloxane reagents, the electrochemistry of quinones and viologens, and charge trapping phenomenon associated with molecular reagents confined at electrode surfaces. Chapter II. Electrochemical characterization of electrode-confined siloxane polymers (NQ-BV[sup 3+])[sub n] and (NQ-BV-BV[sup 5+])[sub n], derived from monomers which contain both napthoquinone (NQ) and benzyl viologen (BV[sup 2+]) subunits, is presented. Chapter III. The author reports the studies of chemical mechanisms for release of charge trapped in the pH-dependence rectifying polymers, (NQ-BV[sup 3+]/siloxane)[sub n] and (NQ-BV-BV[sup 5+]/siloxane)[sub n]. The polymers are derived from monomers which contain both naphthoquinone (NQ) and benzyl viologen (BV[sup 2+]) subunits. Particular to these types of surface confined homopolymers is the ability to trap charge at low pH in the form of reduced quinone. Chapter IV. A methylene linked chromophore-acceptor complex consisting of a rhenium tricarbonyl bipyridine chromophore and a benzylviologen acceptor, BV[sup 2+], were confined to a metal oxide surface via a trimethoxysilyl functional group at the BC[sup 2+] terminus. Photocurrent quantum yield was determined for irradiated electrodes derivatized with either the linked chromophore-acceptor complex, SRe(CO)[sub 3] [4-methyl-4'-[l brace]N-methyl-N'-(4 trimethoxysilyl phenylmethyl)-4,4'-bipyridinium[r brace]-2,2'-bipyridine][sup 2+] [Br[sup [minus]], Cl[sup [minus]]], 1a, or the chromophore complex, XRe (CO)[sub 3] [(4-methyl-4'-[l brace]N-methyl-[4-[beta]-trichlorosilylethyl)] pryridinium[r brace]-22'-bipyridine][sup +] [Br[sup [minus]]], 2a, in the presence of donor solution.

• Research Organization: Massachusetts Inst. of Tech., Cambridge, MA (United States)
• OSTI ID: 7267200
• Resource Relation: Other Information: Thesis (Ph.D.)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
ORGANIC POLYMERS
CHEMICAL PREPARATION
PYRIDINES
REDOX REACTIONS
VOLTAMETRY
QUINONES
SILOXANES
ELECTROCHEMISTRY
PH VALUE
AROMATICS
AZINES
CHEMICAL REACTIONS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SILICON COMPOUNDS
POLYMERS
SYNTHESIS
400400* - Electrochemistry
360601 - Other Materials- Preparation & Manufacture