Electrical-field-induced structural change and charge transfer of lanthanide-salophen complexes assembled on carbon nanotube field effect transistor devices.

The application of a negative gate voltage on a carbon nanotube field effect transistor decorated by a binuclear Tb(III) complex leads to the generation of a negatively charged mononuclear one, presenting an electron density transfer to the nanotube and ambipolar behaviour.

Charge transfer and tunable ambipolar effect induced by assembly of Cu(II) binuclear complexes on carbon nanotube field effect transistor devices.

Assembly of paramagnetic Cu(2) complexes with a Schiff base scaffold possessing extended electron delocalization together with a quasi-planar structure onto carbon nanotubes induces a diameter-selective charge transfer from the complex to the nanotubes leading to an interestingly large and tunable ambipolar effect. We used complementary techniques such as electron paramagnetic resonance, absorption spectroscopy, and photoluminescence to ensure the success of the assembly process and the integrity of the complex in the nanohybrid. We carried out density functional theory type calculations to rationalize the experimental results, evidencing the selective enhanced interaction of the metal complexes with one type of nanotube.

Pneumocystis carinii pneumonia in the course of connective tissue disease: report of 34 cases.

Objective: To determine the circumstances, the clinical features and the outcome of Pneumocystis carinii pneumonia (PCP) in human immunodeficiency virus (HIV)-free patients with connective tissue diseases (CTD).

Methods: Retrospective analysis of all cases referred 10 medical units in the last 10 years.

Results: A total of 34 cases of PCP in patients with CTD were studied (Wegener's granulomatosis, n = 12; systemic lupus erythematosus, n = 6; polyarteritis nodosa, n = 4; poly/dermatomyositis, n = 5; others, n = 7).