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1 article(s) from Geraghty, Paul B

High performance p-type molecular electron donors for OPV applications via alkylthiophene catenation chromophore extension

Paul B. Geraghty,
Calvin Lee,
Jegadesan Subbiah,
Wallace W. H. Wong,
James L. Banal,
Mohammed A. Jameel,
Trevor A. Smith and
David J. Jones

Beilstein J. Org. Chem. 2016, 12, 2298–2314, doi:10.3762/bjoc.12.223

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Figure 1: Chemical structures of molecular materials with the following variations; BT^xR, alkyl side chains o...

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Scheme 1: Synthesis of the key intermediates TMS-T_x-BPin (3), i) diisopropylamine (DIA), THF, n-BuLi, −78 °C ...

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Scheme 2: Oligothiophenes 4–11 synthesised through reaction of the commercially available 5-bromo-2-thiophene...

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Scheme 3: Synthesis of the bithiophene through palladium catalyzed direct arylation, a) i) Pd(OAc)₂, PCy₃, Pi...

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Scheme 4: Synthesis of the key bis-borylated BDT core 13, i) 1.5 equiv B₂Pin₂, 0.025 equiv [Ir(COD)OMe]₂, 0.0...

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Scheme 5: Synthesis of the BXR and BT^XR series of materials, i) 5-bromothiophene carboxaldehyde, 5b, 7a–c, 9b...

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Figure 2: BQR thermal and POM properties. a) DSC thermogram of BQR under nitrogen at a ramp rate of 10 °C min...

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Figure 3: BT⁴R thermal and POM images. a) DSC thermogram of BT⁴R under nitrogen at a ramp rate of 10 °C min⁻¹...

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Figure 4: UV–vis absorption spectra of the BX^XR series in CHCl₃. An expansion of the peak area is shown in th...

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Figure 5: Normalised thin film UV–vis absorption profiles for the BX^xR series for, a) as-cast films (from CDCl...

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Figure 6: Normalised thin film UV–vis absorption profiles for a) BBR, b) BTR and c) BQR showing as-cast (blac...

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Figure 7: Normalised thin film fluorescence emission profiles for BX^xR series after excitation at 580 nm, a) ...

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Figure 8: Variable temperature thin film UV–vis absorption profiles for BQR, collected using the transmission...

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Figure 9: Variable temperature thin-film fluorescence emission profiles for BQR, a) heating and b) cooling, c...

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Figure 10: BQR thin film UV–vis (solid lines) and fluorescence emission spectra (dashed lines) collected at rt...

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Figure 11: Optimized geometry and molecular orbital surfaces of HOMO (bottom) and LUMO (top) for the BXR serie...

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Figure 12: J–V characteristics of BXR:PC₇₁BM BHJ solar cells. (a) device structure, (b) J–V curves for as-cast...

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Figure 13: J–V characteristics of BT^xR:PC₇₁BM ternary BHJ solar cells, a) device architecture, and b) J–V curv...

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Figure 14: J–V characteristics of PTB7-Th:BQR:PC₇₁BM ternary BHJ solar cells. (a) PTB7-Th chemical structure, ...

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Published 02 Nov 2016

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