Mass transfer phenomena can be an important constraint of the soil remediation process. With the goal of minimizing the mass transfer limitation, the degradation of four different PAHs by the white-rot fungus Bjerkandera adusta in a spiked marsh soil was evaluated in a slurry system. Key factors...
Perkin condensation of chrysenyl‐6‐acetic acid with chrysenylene‐6,12‐diglyoxylic acid followed by in situ esterification gives a bismaleate, whose conjugated stilbene moieties are efficiently shielded against intermolecular condensations and undergo iodine‐catalyzed oxidative photocyclizat...
Glyoxylic functionalization of chrysene by Friedel–Crafts acylation with ethyl chloroglyoxylate or by bromination followed by substituent exchange enables the formation of bis[5]helicene‐tetracarboxylates and tetracarboxdiimides through Perkin reactions and palladium‐catalyzed cyclizations. T...
The ligands of type pyrazino[2,3-f][1,10]phenanthroline, R 2 ppl, with R=CN, COOH, COOEt or OH, were synthesized and used as precursors for obtaining the corresponding series of complexes of type [Ru(dmbpy) 2 R 2 ppl](PF 6 ) 2 , where dmbpy is 4,4′-dimeth...
Two unsymmetrical oxovanadium complexes [VO(satsc)(dpq)] (1) (satsc = salicylaldehyde thiosemicarbazone, dpq = pyrazino[2,3-f][1,10]phenanthroline) and [VO(hntdtsc)(dpq)] (2) (hntdtsc = 2-hydroxy-1-naphthaldehyde thiosemicarbazone) have been synthesized and characterized. Both complexes show str...
A nitrogen-riched monomer (10,12-bis(4-hexylthiophen-2-yl)thieno[3′,4′:5,6]pyrazino[2,3-f][1,10]phenanthroline) (HTPP) was synthesized and polymerized to give a polymer (PHTPP) on the electrode directly by the electrodeposition method. The polymer-Cu complex (PHTPP-Cu) was obtained by immersin...
We investigate the effect of structural fluctuations on charge transfer integrals, overlap integrals, and site energies in a system of two stacked molecular 2,3,6,7,10,11-hexakishexyloxytriphenylene (HAT6), which is a model system for conducting devices in organic photocell applications. A densi...
A columnar ionic liquid crystal (LC) can effectively disperse carbon nanotubes, where LC columns spontaneously align homeotropically on a glass substrate. In their Communication on page 8490 ff., Y. Yamamoto, T. Aida, et al. show that when the composite is sheared, both nanotubes and LC columns ...
Pd‐catalyzed Suzuki cross‐coupling reactions between arylboronic acids and bromoarenes have been applied widely in the synthesis of liquid‐crystalline materials. However, aryl triflate derivatives have been less used despite their high chemical tolerance, reactivity, and chemical accessibilit...
In this work, we have designed and synthesized a new naphtho[1,2-b:5,6-b′]dithiophene-containing enlarged π-conjugated donor–acceptor (D–A) small molecule, NDT(TTz) 2 , for use in solution-processed organic photovoltaics. NDT(TTz) 2 , which contains a thiophene-bridged naphth...
We synthesized new diketopyrrolopyrrole (DPP)-based small molecules i.e., TVT(DPP) 2 and NDT(DPP) 2 , containing (E)-1,2-di(thiophen-2-yl)ethene and naphtho[1,2-b:5,6-b′]dithiophene, respectively, as electron-donating moieties with almost identical conjugation lengths. To study ...
Two new small molecules, composed of naphthodithiophene (NDT) donor core and thienopyrroledione (TPD) group acceptor group end-capped with and without an alkyl-bithiophene, defined as NDT(TPD)2 and NDT(TPDTT)2 were designed and synthesized by stille coupling reactions. The thermal and electroche...
The electron–donor polymers containing dibenzo[a,c]phenazine (BPz) derivatives with 2,7-alkyl and 11,12-alkoxy substituted, PBDT-BPzC and PBDT-OBPz, respectively, were synthesized to investigate the photovoltaic effect of different side chain substitutions. The polymers exhibit similar physical...
A dibenzo[a,c]phenazine–fullerene (DBPZ‐C60) dyad in which two chromophores are linked in close proximity to each other has been synthesized and studied in detail by optical spectroscopy to explore a new energy donor–acceptor system. The dyad was prepared by Prato reaction between 11‐formyld...
A new cyclometalated Ir(III) complex [Ir(ppy)2(hdppz)]PF6 (Hppy = 2‐phenylpyridine and hdppz = 6‐hydroxydipyrido[3,2‐a:2′,3′‐c]phenazine) was synthesized and characterized. The pH effects on the UV–vis absorption spectra were studied and ground‐state acid ionization constant pKa values o...
The condensation of 1,2-bisalkoxy-4,5-diaminobenzene 2a-e derivatives with freshly prepared hexaketocyclohexane give hexakis(alkoxy)diquinoxalino[2,3-a:2',3'-c]phenazines in good yield. DSC and polarization microscopy showed HATOC6 has both the crystalline (K) to mesophase (M) and the mesophase ...
Oscan and Umbrian have a future perfect suffix ‐us‐/–ur–. Although various sources for this suffix have been suggested, none satisfactorily explain its origin. This article evaluates these previous attempts and makes a new proposal: the Oscan and Umbrian future perfect can be identified as a...
6,13-Diiododibenzo[a,h]anthracene and 5,8-diiodopicene were synthesized by AuCl-catalyzed double cyclization. The highly selective reaction yielded a new class of peri-halogenated fused aromatics.
The energetics at organic‐metal interfaces are, to large extend, determined by the structure of the molecular adsorbate on the substrate surface. As shown by low‐energy electron diffraction (LEED) the zigzag shape of picene leads to a peculiar monolayer structure on Ag(111), Ag(110), and Cu(11...