Decacyclene was carbonized in a glass tube or a molten salt at various temperatures and the products were analyzed by means of Raman spectroscopy, X-ray diffractometry, ESR and FT-IR spectroscopies in order to investigate the influence of contained pentagonal aromatic rings on the change of carb...
Molekulare Elektronik: Über eine sechsfache Friedel‐Crafts‐Carbamylierung zur Synthese von elektroaktiven Decacyclentriimiden wird berichtet (siehe Bild). Die Triimide ordnen sich je nach Modifikation der Alkylsubstitutenten zu verschiedenen Nanostrukturen an und sind vielversprechende n‐Mat...
Polycyclic aromatic hydrocarbons (PAHs) are environmental pollutants, formed during incomplete burning of coal, oil and gas. Several PAHs have carcinogenic and mutagenic potencies, but these compounds must be activated in order to exert their mutagenic effects. One of the principal pathways prop...
The properties of zero-phonon lines (ZPLs) for individual dibenzo-anthanthrene (DBATT) molecules in solid Xe have been studied. Systematic differences in the widths of ZPLs for molecules occupying different matrix sites were observed. For the majority of samples a monotonic increase of the avera...
4,10‐dibromoanthanthrone, a highly robust building block, is used to synthesize a bis(triarylamine) polymer. The polymer can be oxidized twice to form a polycationic macromolecule showing magnetic properties by electron paramagnetic resonance spectroscopy. In its dicationic state, the presence ...
We studied the annihilation kinetics for triplet excitations in isolated pairs of organic molecules and their delayed fluorescence decay using a new mathematical model for the process. According to this model, the intensity of delayed annihilation fluorescence (DAF) for isolated pairs is directl...
The interaction energies (IE) between benzene and beryllium, magnesium and calcium were calculated at the CCSD(T)/CBS level and including corrections for core-valence and relativistic effects. The IE are 1.8, 2.3 and 3.2kcal/mol for Be, Mg and Ca, respectively, In contrast with our previous find...
Chemical‐bonding analysis in coronene, isocoronene, and circumcoronene has been performed by using the Adaptive Natural Density Partitioning (AdNDP) method. This analysis revealed that coronene and isocoronene have two globally delocalized concentric π‐systems. Circumcoronene does not have gl...
We investigated the electronic structure of crystalline coronene within the framework of the dispersion corrected density‐functional theory (DFT‐D). We use the DFT‐D2 and DFT‐D3 methods. Utilization of the DFT‐D3 leads to a correct account of the dispersion forces, which results in a good a...
Poly(vinyl benzylchloride-co-styrene-co-hydroxy ethylacrylate) anion exchange membranes were synthesized via free radical polymerization. To determine the membrane properties relative to the bulkiness of the aminating agent, these solutions were aminated with various aminating agents, including ...
Summary Graft copolymers with poly(2-nonyl-2-oxazoline) and poly(2-phenyl-2-oxazoline) graft arms have been synthesized using the “grafting from” method. Slightly branched statistical copolymers of isobutene and (m,p)-chloromethylstyrene, synthesized cationically, as well as linear homo-poly((...
. Graft copolymers with poly(2-nonyl-2-oxazoline) and poly(2-phenyl-2-oxazoline) graft arms have been synthesized using the grafting from method. Slightly branched statistical copolymers of isobutene and (m,p)-chloromethylstyrene, synthesized cationically, as well as linear homo-poly((m,p)-chlor...
The melting behaviour of ovalene (C32H14), hexabenzocoronene (C42H18) and circumcoronene (C54H18) clusters is analysed using molecular dynamics simulations. The evolution of the intermolecular energy and the Lindemann Index is used to determine the cluster melting points. The bulk melting point ...
A large number of graphene molecules, or large polycyclic aromatic hydrocarbons (PAHs), have been synthesized and display various optoelectronic properties. Nevertheless, their potential for application in photonics has remained largely unexplored. Herein, we describe the synthesis of a highly l...
Vertically aligned arrays of single walled carbon nanotubes (SWNTs) were chemically attached to an optically transparent electrode of fluorine doped tin oxide (FTO) for use as a working electrode in a photoelectrochemical solar cell. 7,14-Bis[2-[tris(1-methylethyl)silyl]ethynyl]dibenzo[b,def]chr...
Discovery of novel materials with excellent second-order nonlinear optical (NLO) properties is a very attractive topic in chemistry and materials science. Recently, much more attention has been paid to chiral compounds due to their inherent asymmetric structure and intramolecular charge transfer...
The photophysical properties of peropyrene in toluene and acetonitrile solutions at room temperature were investigated with stationary and time-resolved fluorescence and absorption measurements. Peropyrene is highly fluorescent (Φ F = 0.93 in toluene) and exhibits several absorption an...
The development of organic electronics requires scalable solution‐processing methods that enable the fabrication of electronic devices over large areas at low cost. The preparation of peropyrene gels constituted of 3D networks of entangled 1D ribbon‐like fibrils that extend over the μm scale ...
A molecular superlattice consisting of alternate layers of N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C 8 ) and quaterrylene was prepared by using an ultra-slow deposition technique. Film growth under equilibrium conditions with precise optimization of the substrate temperature ...
Quaterrylene field-effect transistors (FETs) were formed on a silicon oxide (SiO 2 ) layer and on an octadecyltrichlorosilane self-assembled monolayer (OTS-SAM). To elucidate the transport mechanisms in the respective devices, we examined the dependence of carrier mobility on film thickn...
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