11 to 20 of 51 Results
Feb 20, 2024 - Gade Group
Eichelmann, Robert; Rippel, Daniel; Ballmann, Joachim; Gade, Lutz H., 2024, "Zipping up Tetraazaperylene: Synthesis of Tetraazacoronenes via Double Coupling in the Bay Positions [data]", https://doi.org/10.11588/data/HIERR9, heiDATA, V1
Substituted tetraazacoronene fluorophores have been obtained selectively by double Suzuki–Miyaura cross coupling of symmetrically substituted 1,2-bis(pinacolatoboryl)alkenes with a bay-substituted octaazaperopyrenedioxide (OAPPDO). Subsequent Scholl reaction of the dimethoxypheny... |
Feb 20, 2024 - Gade Group
Eichelmann, Robert; Jeudy, Pierre; Schneider, Lars; Zerhoch, Jonathan; Mayer, Paula R.; Ballmann, Joachim; Deschler, Felix; Gade, Lutz H., 2024, "Chiral Bay-Alkynylated Tetraazaperylenes: Photophysics and Chiroptical Properties", https://doi.org/10.11588/data/PGSVXO, heiDATA, V1
Fully bay-alkynylated octaazaperopyrene dioxide (OAPPDO) derivatives were accessible through Stille cross coupling reaction of the corresponding bay-chlorinated derivatives. This steric congestion of the bay area led to helically chiral fluorophores, and chiral resolution of two... |
Feb 20, 2024 - Gade Group
Eichelmann, Robert; Ballmann, Joachim; Gade, Lutz H., 2024, "Tetraazacoronenes and Their Dimers, Trimers and Tetramers [data]", https://doi.org/10.11588/data/ZT3AHN, heiDATA, V1
Tetraazacoronenes were synthesized from bay-functionalized tetraazaperylenes by Zr-mediated cyclization and four-fold Suzuki–Miyaura cross coupling. In the Zr-mediated approach, an η4-cyclobutadiene-zirconium(IV) complex was isolated as an intermediate to cyclobutene-annulated de... |
Feb 12, 2024 - SFB 1249: N-Heteropolyzyklen als Funktionsmaterialien - B: Theory & Structure
Stein, Arnulf; Rolf, Daniela; Lotze, Christian; Günther, Benjamin; Gade, Lutz H.; Franke, Katharina J.; Tegeder, Petra, 2024, "Band Formation at Interfaces Between N-Heteropolycycles and Gold Electrodes [research data]", https://doi.org/10.11588/data/QNAPNN, heiDATA, V1
Underlying data for figures in the paper "Band Formation at Interfaces Between N-Heteropolycycles and Gold Electrodes" |
Feb 9, 2024 - SFB 1249: N-Heteropolyzyklen als Funktionsmaterialien - C: Material & Function
Klauk, Hagen; Zschieschang, Ute; Waizmann, Ulrike; Weis, Jürgen; Borchert, James W., 2024, "Nanoscale flexible organic thin-film transistors [data]", https://doi.org/10.11588/data/7JALYI, heiDATA, V1
Direct-write electron-beam lithography has been used to fabricate low-voltage p-channel and n-channel organic thin-film transistors with channel lengths as small as 200 nm and gate-to-contact overlaps as small as 100 nm on glass and on flexible transparent polymeric substrates. T... |
Feb 1, 2024 - Bunz Group
Zong, Wansheng; Hippchen, Nikolai; Nico, Zeitter; Maier, Steffen; Philipp, Ludwig; Rominger, Frank; Freudenberg, Jan; Bunz, Uwe H. F., 2024, "Stable Azaheptacenes", https://doi.org/10.11588/data/P9AVCU, heiDATA, V1
we have developed a novel access to stable azaheptacenes and investigated both their (air-stable) radical anions as well as dianions. The two azaheptacenes are significantly more stable than reported examples. We identified their structure through NMR, IR, MS and X-ray crystallog... |
Jan 31, 2024 - SFB 1249: N-Heteropolyzyklen als Funktionsmaterialien - A: Synthesis
Hashmi, A. Stephen K.; Hüßler, Christopher; Kahle, Justin; Dietl, Martin C.; Krämer, Petra; Rominger, Frank; Rudolph, Matthias, 2024, "Facile two-step Synthesis of para-Dithienopyrazines [data]", https://doi.org/10.11588/data/14RXKL, heiDATA, V1
N-Heteropolycyclic compounds are valuable building blocks in organic electronic devices. In this work, a convenient route for the synthesis of para-dithienopyrazines from readily available starting materials is described. A cascade of nucleophilic aromatic substitution and subseq... |
Jan 25, 2024 - Bunz Group
Ludwig, Philipp; Rominger, Frank; Freudenberg, Jan; Bunz, Uwe H. F., 2024, "Stabilization of Acenes: “Geländer”-Pentacenes [data]", https://doi.org/10.11588/data/NITIKZ, heiDATA, V1
We report soluble tetrakis-biphenyl substituted pentacenes comprised of sp2 carbons and synthesized from pentacene-5,7,12,14-tetraone. Intramolecular Yamamoto coupling of two tetrakis(chlorobiphenylyl)pentacenes yields helical, doubly wrapped pentacenes, in which the quaterphenyl... |
Jan 22, 2024 - Bunz Group
Zeitter, Nico; Hippchen, Nikolai; Baur, Philipp; Unterreiner, Tamara; Freudenberg, Jan; Rominger, Frank; Bunz, Uwe, 2024, "Pentacene to Octacene: The Limit of Fourfold TIPS-Ethynylation [data]", https://doi.org/10.11588/data/DDJFGS, heiDATA, V1
Soluble acenes beyond hexacene are rare. Their sensitivity complicates isolation, purification and application in devices. To increase the stability of acenes, functionalization with trialkylsilylethynyl substituents prevents [4+4] dimerization and oxidation. At the same time suc... |
Jan 8, 2024 - Bunz Group
Zong, Wansheng; Hippchen, Nikolai; Dittmar, Benedikt; Elter, Maximilian; Ludwig, Philipp; Rominger, Frank; Freudenberg, Jan; Bunz, Uwe H. F., 2024, "Halogenated Phenazinothiadiazoles: Electron Transporting Materials [data]", https://doi.org/10.11588/data/PKX5CI, heiDATA, V1, UNF:6:M6UVaar224tmBy3Sj1o9jg== [fileUNF]
Triisopropylsilyl-(TIPS)-alkynylated phenazinothiadiazoles were prepared by the condensation of halogenated ortho-quinones and TIPS-alkynylated 5,6-diamino-2,1,3-benzothiadiazole with different combinations of halogen substituents. The compounds pack in brickwall motif of head-to... |