The design and synthesis of electroactive and magnetic polymers

Miscellaneous · Fri Jan 01 00:00:00 EST 1993

OSTI ID:7274157

Rock, Jr, M M

Ring-opening metathesis polymerization (ROMP) remains a valuable tool in polymer synthesis because it affords structurally well-defined, functionalized materials with highly unsaturated polymer backbones. The power and flexibility of organic and polymer chemistry are used here to create fully conjugated, electroactive organic polymers. A series of electroactive poly(norbornadienebenzoquinone-imine) and poly(norbornadienebenzoquinone) polymers have been synthesized by the ring-opening metathesis polymerization (ROMP) of functionalized bicyclo[2.2.1]hepta-2,5-dienes using alkylidene metathesis catalysts. Incorporation of these quinone and imine redox units into organic norbornadiene polymers generates highly reactive and conductive materials capable of charge storage and electrochromism. An improved precursor polymer route is described to polyparaphenylene (PPP) based upon the ring-opening metathesis polymerization (ROMP) chemistry of cis-di(3,4-dihydroxymethyl)cyclobutene dicarbonate. These precursor polybutenamers undergo a final conversion to insoluble polyparaphenylene (PPP) without destroying or disturbing the existing polymer structure. These polybutenamers are of great interest because they incorporate high degrees of acid, oxygen, and heteroatom functionality into a soluble 1,4-poly(butadiene) structure. Organic magnets offer new insights into the nature of magnetism and lead to the development of materials with unique optical, electrical, and magnetic properties. To test the Topological Coupling Model an organic-based ferromagnetic polymer was designed around the ring-opening metathesis polymerization (ROMP) of 3-diphenylmethylenecyclobutene. Doping, the generation of charged species along the polymer, generates a radical spin (1,2) on every monomer unit in the polymer chain, resulting in a fully conjugated polybutenamer polymer. Oxidative doping of this material evokes ferromagnetic couplings among unpaired spins in the material.

• Research Organization: California Inst. of Tech., Pasadena, CA (United States)
• OSTI ID: 7274157
• Resource Relation: Other Information: Thesis (Ph.D.)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ORGANIC POLYMERS
CHEMICAL PREPARATION
ELECTRICAL PROPERTIES
MAGNETIC PROPERTIES
BENZOQUINONES
CYCLOALKENES
ELECTRIC CONDUCTORS
MAGNETIC MATERIALS
NORBORNADIENE
POLYMERIZATION
ALKENES
AROMATICS
CHEMICAL REACTIONS
HYDROCARBONS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYMERS
QUINONES
SYNTHESIS
360601* - Other Materials- Preparation & Manufacture
360606 - Other Materials- Physical Properties- (1992-)