Structural modulation of internal charge transfer in small molecular donors for organic solar cells.

Donor-acceptor molecules with small chain extension have been synthesized and used as active material in organic solar cells. The effect of fusion of a phenyl group on the end dicyanovinylene acceptor is discussed.

The delivery of a health promotion intervention by a public health promotion specialist improves patient satisfaction in the emergency department.

Objectives: The objective was to introduce a public health promotion specialist (PHPS) into the hospital emergency department (ED) to provide a brief health promotion intervention to patients and to determine the effect of the initiative on patient satisfaction.

Methods: Patients in the intervention group were offered and received a 5- to 10-minute presentation about exercise, heart health, healthy eating on a budget, or weight control by a trained PHPS. Patients in the control group received usual ED care.

Quaterthiophenes with terminal indeno[1,2-b]thiophene units as p-type organic semiconductors.

Quaterthiophenes 4T, Oct-4T, and Tol-4T based on a central 2,2'-bithiophene core alpha,omega-terminated with 4,4-unsubstituted and 4,4-disubstituted n-octyl or p-tolyl indeno[1,2-b]thiophene have been synthesized by Stille or Miyaura-Suzuki couplings. Compound 4T was also synthesized by an alternative route involving a soluble precursor bearing solubilizing trimethylsilyl groups which have been eliminated in the last step. The electronic properties of the compounds have been analyzed by cyclic voltammetry, UV-vis absorption and fluorescence emission spectroscopy.