fluorene

This in part due to the shape of fluorene.

As interest in conducting plastics grew, fluorene again found application.

However, more promising was integrating the optoelectronic properties of fluorene into a polymer.

Not to be confused with fluorene, fluorenone, or fluorine.

For example, 9,9-fluorenyldipotassium can be obtained by treating fluorene with potassium metal in boiling dioxane.

Fluorene in the National Institute of Standards and Technology database.

It is a polymorph of the aromatic hydrocarbon fluorene.

Although fluorene is obtained from coal tar, it can also be prepared by dehydrogenation of diphenylmethane.

It can be produced from fluorene via oxidation (by common oxidizers or even atmospheric oxygen).

They include fluorene and pyrene.

In the fastest system to date, with a fluorene lower half, the half-life of the thermal helix inversion is 0.005 seconds.

Fluorenol is an alcohol derivative of fluorene.

Reports of the oxidative polymerization of fluorene (into a fully conjugated form) exist from at least 1972.

This enzyme participates in fluorene degradation.

Oxidation of fluorene gives fluorenone, which is nitrated to give commercially useful derivatives.

Additionally, researchers have tried adding large substituents at the nine position of the fluorene in order to inhibit excimer and aggregate formation.

Copolymerization of fluorene with other monomers allows researchers to optimize the absorption and electronic energy levels as a means to increase the photovoltaic performance.

The fluorene molecule is nearly planar, although each of the two benzene rings is coplanar with the central carbon 9.

Fluorene is a precursor to other fluorene compounds; the parent species has few applications.

He discovered and synthesized the first lactones and investigated structures of piperine naphthalene and fluorene.

Fluorene is generally planar; p-orbital overlap at the linkage between its two benzene rings results in conjugation across the molecule.

In addition to doping, color of polyfluorenes can be tuned by copolymerizing the fluorene monomers with other low band gap monomers.

A single example of the deoxygenation of a urea with a fluorene derived carbene to give the tetramethyldiaminocarbene and fluorenone has also been reported:

The purification of fluorene exploits its acidity and the low solubility of its sodium derivative in hydrocarbon solvents.

The physical properties of the fluorene molecule were recognizably desirable for polymers; as early as the 1970s researchers began incorporating this moiety into polymers.