A new fluorene-based AIE-active gold(i) complex was designed and synthesized. The novel luminogen exhibits a crystallization-induced emission enhancement (CIEE) effect and reversible mechanochromic behavior with fluorescence changes between green and yellow emissions.

New organic dyes that contain variable lengths of conjugation featuring alternating thiophene and fluorene segments have been synthesized and efficient nano-crystalline TiO2 based dye-sensitized solar cells were fabricated using these molecules as light-harvesting sensitizers.

Anodic fluorodesulfurization of a poly(fluorene) derivative coated on a Pt electrode was successfully carried out in an ionic liquid hydrogen fluoride salt, yielding a alternating copolymer containing a difluorofluorene moiety.

By photocyclization, benzene, thieno[3,2-b]thiophene, and fluorene units were embedded between the two perylene units. Symmetric oligomeric perylene bisimide 6 displays broad absorption and strong electron-accepting ability.

ion 260 Preparation of Dibenzofurafls and Related Hetero-analogues 268 Preparation of Dibenzofurans 268 Preparation of Dibenzothiophenes 281 Attempted Preparation of Carbazoles and N-Methylcarbazoles 289 4.. Preparation of Fluorene and Fluorenone 298

A new fluorene-based white light-emitting gold(I) complex with aggregate fluorescence change is reported. The novel luminogen emits direct white light in the solid state without involving complex doping/mixing procedures.

Few studies have been published on the excretion rates of parent polycyclic aromatic hydrocarbons (PAHs) and hydroxy-polycyclic aromatic hydrocarbons (OH-PAHs) following oral exposure. This study investigated the metabolism and excretion rates of 4 parent PAHs and 10 OH-PAHs after the consumption of smoked salmon. Nine members of the Confederated Tribes of the Umatilla Indian Reservation consum...

1. Enzymic esterifications of 2-(N-hydroxyacetamido)fluorene and several other hydroxamic acids by liver cytosol were studied. Determination of 2-acetamido-3-methylthiofluorene was used for the assay. 2. With rat liver cytosol, requirement for ATP, Mg(2+) and SO(4) (2-) suggested formation of phosphate and sulphate esters of 2-(N-hydroxyacetamido)fluorene. 3. Rats showed sex and age differences...

We present here the first study of the effect of substituent groups and the chemical structure of fluorene derivatives on phosphorescent emission. A group of fluorene derivatives have been studied with a new methodology of room-temperature phosphorescence emission called heavy atom induced room-temperature phosphorescence (HAI-RTP). This methodology makes use of RTP emission directly from the c...

including the potent hepatic carcinogen, 2-acetylamino fluorene (2-AAF), become bound to tissue protein in susceptible animals (6, 20, 35). Recently, it has been reported (18) and confirmed (10, 19, 38) that radioactive 2-AAF also binds to liver ribonucleic acid (RNA) when administered to rats. Because of its possible importance to our understanding of the pathogenesis of liver cancer, some asp...