High-Yielding Synthesis and Full Spectroscopic Characterization of 5,6:11,12-Di-<i>o</i>-phenylenetetracene and Its Synthesis Intermediates
作者:Tobias Wombacher、Sabine Foro、Jörg J. Schneider
DOI:10.1002/ejoc.201501228
日期:2016.1
Herein we present a synthetic gram-scale route to 5,6:11,12-di-o-phenylenetetracene (DOPT, 8), which is a member of the class of cyclopenta-fused polycyclic aromatic hydrocarbons (CP-PAHs). Full analytical characterization of the title compound was carried out by IR, Raman, UV/Vis, and high-field 1H NMR spectroscopy, as well as by mass spectrometry. A unique double-elimination of phenylide moieties
Polycyclicaromatic compounds containing fully unsaturated five‐membered ring(s) have been intensively studied because of their unique properties, which include high electron affinity and reactivity. Reported herein is an efficient route for the synthesis of tetrabenzo‐fused pyracylene, which comprises pyracylene and tetracene segments, using intramolecular oxidative CH coupling. It was shown to possess
functionalization of tetracene with molecular benzene is reported. Under the typical conditions of the Scholl reaction, a domino reaction occurs between tetracene and six molecules of benzene in one pot to furnish an aromatic compound with a curved π-system. This reaction sequence involves oxidative cross-dehydrogenative coupling/annulation and Friedel–Crafts-type reactions. Eight C–C bonds are formed via this
Structural Polymorphism and Thin Film Transistor Behavior in the Fullerene Framework Molecule 5,6;11,12‐di‐
<i>o</i>
‐Phenylenetetracene
作者:Tobias Wombacher、Andrea Gassmann、Sabine Foro、Heinz von Seggern、Jörg J. Schneider
DOI:10.1002/anie.201601517
日期:2016.5.10
The molecular structure of the hydrocarbon 5,6;11,12‐di‐o‐phenylenetetracene (DOPT), its material characterization and evaluation of electronic properties is reported for the first time. A single‐crystal X‐ray study reveals two different motifs of intramolecular overlap with herringbone‐type arrangement displaying either face‐to‐edge or co‐facial face‐to‐face packing depicting intensive π–π interactions
碳氢化合物5,6; 11,12-di- o的分子结构苯并四苯(DOPT),其材料表征和电子性能评估是首次报道。X射线单晶研究揭示了人字形排列的两个分子内重叠图案,显示出密集的π-π相互作用的面对面或同面面对面堆积。密度泛函理论(DFT)计算的基础是,由于具有共面芳烃取向的DOPT多晶型体中的π键重叠,电荷跳跃过程产生了良好的电子传输机制。评估了最先进的有机场效应晶体管(OFET)器件中多晶DOPT膜作为有源有机半导体层的性能,并证明其与膜厚有关。对于40 nm的层厚度,它显示出饱和空穴迁移率(μ孔)最高可达0.01 cm 2 V -1 s -1,开/关比(I on / I off)为1.5×10 3。
Complete charge separation provoked by full cation encapsulation in the radical mono- and di-anions of 5,6:11,12-di-<i>o</i>-phenylene-tetracene
作者:Tobias Wombacher、Richard Goddard、Christian W. Lehmann、Jörg J. Schneider
DOI:10.1039/c8dt01285g
日期:——
disturbing influence of an associated metal cation has been demonstrated. This was achieved by fully sandwiching the cationic K+ counterions between two benzo-15-crown-5-ether (B15C5) ligands resulting in a fully encapsulating (κ10O) geometry which ensures a complete separation of the K+ counterions and the bare anionic PAH species [LDOPT˙−] and [LDOPT2−]. The structural changes accompanied by the stepwise