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3 article(s) from Mena-Osteritz, Elena

Synthesis and characterization of S,N-heterotetracenes

Astrid Vogt,
Florian Henne,
Christoph Wetzel,
Elena Mena-Osteritz and
Peter Bäuerle

Beilstein J. Org. Chem. 2020, 16, 2636–2644, doi:10.3762/bjoc.16.214

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Figure 1: Heteroacenes: tetrathienoacene (TTA), S,N-heteroacenes SN4, SN4', and SN4''.

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Scheme 1: Synthesis of fused S,N-heterotetracene SN4 9 starting from thieno[3,2-b]thiophene (1).

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Scheme 2: Synthesis of parent H-SN4 13 via the azide route.

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Scheme 3: Synthesis of tetracyclic H-SN4 13 via the Cadogan route.

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Scheme 4: Synthesis of tetracyclic indole derivative 19 via the Cadogan route.

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Scheme 5: Synthesis of hexacyclic heteroacene SN4' 22 via the Cadogan route.

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Scheme 6: Synthesis of heterotetracene SN4'' 33 via the azide and Buchwald–Hartwig amination route.

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Figure 2: UV–vis absorption spectra of TTA, Hex-SN4 9, Pr-SN4'' 33 and fluorescence spectrum of 33 in THF at ...

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Figure 3: Energy diagram of the frontier molecular orbitals of heterotetracenes TTA, 9, 13, 19, 22, and 33, a...

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Published 26 Oct 2020

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Selenophene-containing heterotriacenes by a C–Se coupling/cyclization reaction

Pierre-Olivier Schwartz,
Sebastian Förtsch,
Astrid Vogt,
Elena Mena-Osteritz and
Peter Bäuerle

Beilstein J. Org. Chem. 2019, 15, 1379–1393, doi:10.3762/bjoc.15.138

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Figure 1: Heterotriacenes DTT 1, DTS 2, DST 3, and DSS 4 with varying number of selenium atoms and fused sele...

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Scheme 1: Synthesis of heterotriacenes DTT 1 and DTS 2 via copper-catalyzed cross-coupling reactions.

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Scheme 2: Synthesis of selenolotriacenes DST 3 and DSS 4.

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Figure 2: Single crystal X-ray structure analysis of selenolotriacene DST 3, (a) individual molecule and atom...

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Figure 3: Single crystal X-ray structure analysis of selenolotriacene DST 3: (a) partial overlap of stacked a...

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Figure 4: DFT quantum chemical calculated geometry of DTT 1 and general atom labelling for all heterotriacene...

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Figure 5: Representative electron density of frontier orbitals LUMO, HOMO, and HOMO-1 for heterotriacene DSS 4...

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Figure 6: Normalized absorption spectra of heteroacenes DTT 1 (black line), DTS 2 (blue line), DST 3 (green l...

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Figure 7: Energy diagram of the frontier molecular orbitals of heterotriacenes 1–4.

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Figure 8: Multisweep voltammograms for the electrochemical polymerization of monomeric heterotriacene DST 2 i...

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Scheme 3: Oxidative polymerization of heterotriacenes 1–4 to corresponding conjugated polymers P1–P4.

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Published 24 Jun 2019

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Synthesis, photophysical and electrochemical characterization of terpyridine-functionalized dendritic oligothiophenes and their Ru(II) complexes

Amaresh Mishra,
Elena Mena-Osteritz and
Peter Bäuerle

Beilstein J. Org. Chem. 2013, 9, 866–876, doi:10.3762/bjoc.9.100

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Scheme 1: Synthesis of 4'-ethynyl-2,2':6',2''-terpyridine (5).

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Scheme 2: Synthesis of tpy-functionalized dendritic oligothiophenes 8 and 9.

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Scheme 3: Synthesis of homoleptic Ru(II) complexes 1 and 2.

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Figure 1: (a) Absorption spectra of ligands and their corresponding Ru(II)-dendrimers in acetonitrile solutio...

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Figure 2: Electronic distribution of the frontier orbitals (HOMO, HOMO-1 and LUMO) for complexes 1 (a) and 2 ...

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Figure 3: CV of 1.0 mM solutions of ligands (a) and complexes (b) in anhydrous dichloromethane (oxidation) an...

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Published 06 May 2013

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