Organosulfonates are important natural and man-made compounds, but until recently (T. J. Lie, T. Pitta, E. R. Leadbetter, W. Godchaux III, and J. R. Leadbetter. Arch. Microbiol. 166:204-210, 1996), they were not believed to be dissimilated under anoxic conditions. We also chose to test whether alkane- and arenesulfonates could serve as electron sinks in respiratory metabolism. We generated 60 a...

The protein (AfpA, for archaeoflavoprotein) encoded by AF1518 in the genome of Archaeoglobus fulgidus was produced in Escherichia coli and characterized. AfpA was found to be a homodimer with a native molecular mass of 43 kDa and containing two noncovalently bound flavin mononucleotides (FMNs). The cell extract of A. fulgidus catalyzed the CO-dependent reduction of AfpA that was stimulated by t...

We present a density functional theory (DFT) study on charge-transport related properties in a series of discotic systems based on 1,3,5-triazine and tris[1,2,4]triazolo[1,3,5]triazine central cores as electron acceptor units, and phenyl-thiophene and N-carbazolyl-thiophene segments as electron donor units. The presence of both electron donor and acceptor moieties in the π-conjugated core could...

This review aims to give an overview of the current status of our research on the synthesis of π-electron donor bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF, ET) analogues prepared from 1,8-diketones via a ring forming reaction. The new synthesized π-electron donors have vinyl moieties producing extended π-electron delocalization over the substituent phenyl rings at the peripheries.

The photo-induced electron transfer has been under intensive investigation for a few decades already, and good understanding of the reaction was developed based on thorough study molecular donor–acceptor (DA) system. recent shift to hybrid DA systems opens question transferring knowledge analyze design these new materials. One apparent differences is size increase donor or acceptor entities. el...

We report studies of the free carrier and donor-bound FIR excitations of a confined electron gas in modulation doped GaAs/AlGaAs quantum wells (QW) as a function of the QW electron density. Applied pressure is used to tune the electron density via the G±X well±barrier crossover. As electrons are removed from the QWs, we observe successively the quenching of cyclotron resonance, the evolution of...

Nanoparticles (NPs) of donor–acceptor organic semiconductors are produced by a one-step nanoprecipitation with Janus morphology. Electron donor P3HT was blended electron acceptor PC61BM in tetrahydrofuran and then precipitated water, first surfactant second without surfactant. Cryogenic transmission microscopy reveals an internal structure at high magnification, for NPs which have, the past, be...

Microbial mats containing the filamentous anoxygenic photosynthetic bacterium Chloroflexus aggregans develop at Nakabusa hot spring in Japan. Under anaerobic conditions in these mats, interspecies interaction between sulfate-reducing bacteria as sulfide producers and C. aggregans as a sulfide consumer has been proposed to constitute a sulfur cycle; however, the electron donor utilized for micro...

A new three-layer perovskite oxide with the Ruddlesden-Popper (R-P) phase, K2CaNaNb3O10, and its protonated form were synthesised and their photocatalytic performance was compared to that of KCa2Nb3O10 or the protonated form with the Dion-Jacobson (D-J) structure in terms of H2 and O2 evolution. K2CaNaNb3O10 exhibited a higher activity for O2 evolution than KCa2Nb3O10 when IO3- was used as an e...

A new series of nucleobase adenine (A) functionalized naphthalene diimide (NDI) derivatives to form a donor-acceptor conjugate has been designed, synthesized and characterized. The photoinduced electron transfer from to...