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Search for "oligothiophene" in Full Text gives 6 result(s) in Beilstein Journal of Nanotechnology.
Rigid multipodal platforms for metal surfaces
Beilstein J. Nanotechnol. 2016, 7, 374–405, doi:10.3762/bjnano.7.34
- aromatic systems to make a strong and more conductive contact. Aromatic tripodal adsorbates The synthesis of tetraphenylmethane-based anchor with three sulfanylmethyl feet was pioneered by Aso and co-workers [92]. They designed and studied [60]fullerene-linked oligothiophene tetramer and octamer
- of a well-decoupled oligothiophene chromophore on the gold electrode, which suppresses quenching of the excited states of the chromophoric unit both by lateral interactions between neighboring molecules in the monolayer and by the gold electrode. Further electrochemical studies of SAMs of two
- tripodal oligothiphene-bearing thiols 30 (Figure 12) on Au(111) indicated that the packing within the SAM of shorter oligothiophene-terminated tripods (n = 1) is more compact than that of the longer ones [125]. In the following series of tower-shaped molecules there are two factors that significantly lower
Optimization of solution-processed oligothiophene:fullerene based organic solar cells by using solvent additives
Beilstein J. Nanotechnol. 2013, 4, 680–689, doi:10.3762/bjnano.4.77
- devices typically display much better performances in photovoltaic cells. Keywords: active layer morphology; comparison vacuum-processed solar cells; maximum solubility; oligothiophene; solar cells; solution-processed bulk heterojunction; solvent additives; Introduction The demand for the development of
- oligothiophene backbone, whereas the reduction corresponds to the more instable radical anions formed on the DCV groups. HOMO and LUMO energy levels were calculated to be −5.6 and −3.7 eV, respectively, from the onset of the first oxidation and reduction wave. The results are displayed in Figure 2 and compared
- higher boiling point than CB (259 vs 132 °C), upon evaporation of CB during the final spin-coating stage, the CN content near the substrate increases. Considering the higher solubility of the oligothiophene in CN, we suggest that DCV5T-Bu4-richer domains are formed at the PEDOT:PSS interface. This
Self-assembled monolayers and titanium dioxide: From surface patterning to potential applications
Beilstein J. Nanotechnol. 2011, 2, 845–861, doi:10.3762/bjnano.2.94
- quasi-perpendicular structure of the CNBTPA–DCNDBQT layer relative to the TiO2 surface was inferred, suggesting optimal orbital overlap between neighboring thiophene rings. The same substituted oligothiophene was then used to form a nanoscopic organic field-effect transistor (OFET), albeit not on TiO2
STM study on the self-assembly of oligothiophene-based organic semiconductors
Beilstein J. Nanotechnol. 2011, 2, 802–808, doi:10.3762/bjnano.2.88
- stretches accordingly from 1.7 nm to 5.4 nm. The carboxylic acid group (COOH) at the terminal α-position of the oligothiophene backbone allows the formation of effective intermolecular hydrogen bonding through dimer formation. The regioregular hexyl-side-chain substitution pattern enhances the solubility of
- molecules are lying flat on the nonreactive HOPG surface. The oligothiophene backbone carrying the delocalized π-electron system is recognized in STM images as bright spots under the given scanning conditions, which correspond to a higher tunneling probability. On the contrary, the alkyl side chains
- , corresponding to the insulating part of the molecules, are extended perpendicular to the oligothiophene backbone and can be recognized as dark regions, reflecting the expected lower tunneling probability. Figure 2 (center) shows a short range image of H4TCOOH adsorbed on HOPG, exhibiting submolecular resolution
Optical properties of fully conjugated cyclo[n]thiophenes – An experimental and theoretical approach
Beilstein J. Nanotechnol. 2011, 2, 720–726, doi:10.3762/bjnano.2.78
- based on a Frenkel exciton Hamiltonian. Furthermore, intriguing new bands in the absorption and fluorescence spectra of the smaller macrocycles disclose the dominance of their ring strain. Keywords: conjugated macrocycles; Frenkel exciton model; oligothiophene; photophysical properties; Introduction
- is distributed along the ring. These findings strongly corroborate the description of the electronic excitations by the model based on Frenkel excitons, despite the limitations assumed in this approach. A series of improvements of the model can be adopted in the future. Conclusion Oligothiophene
- linear fit of series I. Diagram of the energy of the absorption band (eV) versus the number of thiophenes in the macrocycles of series I (circles) and II (squares), including the least-squares fit to Equation 2. Chemical structure of the oligothiophene macrocycles (series I and II). The coordinate system
Self-organizing bioinspired oligothiophene–oligopeptide hybrids
Beilstein J. Nanotechnol. 2011, 2, 525–544, doi:10.3762/bjnano.2.57
- In this minireview, we survey recent advances in the synthesis, characterization, and modeling of new oligothiophene–oligopeptide hybrids capable of forming nanostructured fibrillar aggregates in solution and on solid substrates. Compounds of this class are promising for applications because their
- amyloidogenic peptide sequences leads to a new class of block copolymers that can inherit typical properties of their constituents, e.g., enhanced performance characteristics, conductivity, biocompatibility, and high propensity for self-organization. In this respect, oligothiophene–oligopeptide conjugates are
- studied compounds and potential applications for the rational computer-aided design of new macromolecular systems with specific properties. In this minireview, we discuss the recent progress in the design, synthesis and in computer simulations of new oligothiophene–oligopeptide conjugates that can self
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