Molecular design: Employing electro-copolymerization, we use benzodithiophene-S,S-tetraoxide (BDTT) as an electron acceptor to yield promising electronically conducting polymers (ECPs).

We report the results of time-resolved electron paramagnetic resonance (TREPR) studies of photoinduced charge separation in different supramolecular donor-acceptor systems dissolved in oriented liquid crystals (LC). Three systems are discussed: 1) covalently linked donor-spacer-acceptor systems (DsA); 2) donor-acceptor systems linked by hydrogen bonds; and 3) a zwitterionic system in which the ...

Simutaneously high open circuit voltage and high short circuit current density is a big challenge for achieving high efficiency polymer solar cells due to the excitonic nature of organic semdonductors. Herein, we developed a trialkylsilyl substituted 2D-conjugated polymer with the highest occupied molecular orbital level down-shifted by Si-C bond interaction. The polymer solar cells obtained by...

The ability of molecules to change colour on account of changes in solvent polarity is known as solvatochromism and used spectroscopically to characterize charge-transfer transitions in donor-acceptor molecules. Here we report that donor-acceptor-substituted molecular wires also exhibit distinct properties in single-molecule electronics under the influence of a bias voltage, but in absence of s...

We study a multilayer silicon-germanium quantum well structure doped with acceptor impurities for resonant-state lasers capable of emitting photons of energy below 4 meV 1 THz . Unlike previous proposals on terahertz lasers in doped silicon-germanium quantum wells, the emitted photon energy does not need to exceed the acceptor binding energy, which is tens of meV. The energy constraint is relax...

Zinc oxide is a promising material for blue and UV solid-state lighting devices, among other applications. Nitrogen has been regarded as a potential p-type dopant for ZnO. However, recent calculations [Lyons, Janotti, and Van de Walle, Appl. Phys. Lett. 95, 252105 (2009)] indicate that nitrogen is a deep acceptor. This paper presents experimental evidence that nitrogen is, in fact, a deep accep...

Binding of ethidium bromide to Escherichia coli tRNAVal and an RNA minihelix based on the acceptor stem and T-arm of tRNAVal was investigated by 19F and 1H NMR spectroscopy of RNAs labeled with fluorine by incorporation of 5-fluorouracil. Ethidium bromide selectively intercalates into the acceptor stem of the tRNAVal. More than one ethidium bromide binding site is found in the acceptor stem, th...