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2 article(s) from Würthner, Frank

Naphthalene diimide–amino acid conjugates as novel fluorimetric and CD probes for differentiation between ds-DNA and ds-RNA

Annike Weißenstein,
Myroslav O. Vysotsky,
Ivo Piantanida and
Frank Würthner

Beilstein J. Org. Chem. 2020, 16, 2032–2045, doi:10.3762/bjoc.16.170

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Figure 1: Structures of investigated compounds stressing steric differences in linker length attached to the ...

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Scheme 1: Synthesis of water-soluble naphthalene diimides 3a,b, and 5.

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Figure 2: UV–vis absorption (solid line) and fluorescence spectra (dashed line) of NDI 3a,b, and 5 (c = 4.5 ×...

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Figure 3: Calculations for Cl-NDI-NMe model compound (at the B3LYP/6-31+G** level of theory) in water (PCM). ...

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Figure 4: (a) Melting curve of poly(dA-dT)₂ alone and after the addition of NDI 3a,b, and 5 (r = 0.3 ([NDI]/[...

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Figure 5: Changes in fluorescence intensity (spectra are normalized) of (a) 3a (c = 1.0 × 10⁻⁶ M), (b) 3b (c ...

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Figure 6: Calorimetric titration of a poly(dG-dC)₂ solution in sodium cacodylate buffer (pH 5.0) at 298 K wit...

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Figure 7: CD titration of poly(dG-dC)₂ (c = 2.0 × 10⁻⁵ M) with (a) 3a, (b) 3b, and (c) 5 with increasing mola...

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Figure 8: Schematic representation of the alignment of the intercalating 3a (left) and 3b (right) between the...

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Full Research Paper

Published 19 Aug 2020

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Self-assembly and semiconductivity of an oligothiophene supergelator

Pampa Pratihar,
Suhrit Ghosh,
Vladimir Stepanenko,
Sameer Patwardhan,
Ferdinand C. Grozema,
Laurens D. A. Siebbeles and
Frank Würthner

Beilstein J. Org. Chem. 2010, 6, 1070–1078, doi:10.3762/bjoc.6.122

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Scheme 1: Structure of the quarterthiophene derivative T1.

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Scheme 2: Synthetic route to T1. Reagent and conditions: a) Boc anhydride, CH₂Cl₂, 6 h, 0 °C–rt, 97%; b) NBS,...

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Figure 1: AFM height images of a film spin-coated from diluted gel solution of T1 in MCH (2 × 10⁻³ M) onto HO...

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Figure 2: a) UV-vis spectra of T1 in chloroform (dashed line) and n-heptane (solid line); b) UV-vis spectra o...

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Scheme 3: Proposed mode of self-assembly of T1.

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Figure 3: UV-vis spectra of T1 (concentration 5 x 10⁻⁵ M) in cyclohexane (solid line) and 2.4% MeOH in cycloh...

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Figure 4: AFM height images (A and B) of a film spin-coated from MCH solution (concentration 5 x 10⁻⁴ M) of a...

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Figure 5: Variation of dose-normalized conductivity transients (Δσ/D) with time for T1.

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Published 16 Nov 2010

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