10 article(s) from Skabara, Peter J
- Full Research Paper
- Published 19 May 2020
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Scheme 1: Synthesis of compounds 7a and 7b from carbazole 1. i) NBS, DMF, 0 °C to rt, 24 h. ii) n-hexyl bromi...
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Figure 1: TGA (a) and DSC (b) curve of the compounds 7a and 7b.
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Figure 2: Cyclic voltammograms of compounds 7a and 7b in dichloromethane under argon atmosphere at room tempe...
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Figure 3: Energy levels of compounds 7a and 7b.
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Figure 4: Normalised UV–vis and PL spectra of compounds 7a and 7b in dichloromethane.
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Figure 5: Normalised UV–vis spectra of compounds 7a and 7b in different solvents.
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Figure 6: PL spectra of compounds 7a and 7b in different solvents (A–H).
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- Letter
- Published 21 Aug 2018
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Figure 1: Oxidative wave for PEDOT (black line) and PEDTT (dashed line), together with the corresponding stru...
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Figure 2: Normalised Raman spectra of (a) doped PEDOT monolayer; (b) de-doped PEDOT monolayer; (c) doped PEDT...
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Polythiophene and oligothiophene systems modified by TTF electroactive units for organic electronics
- Review
- Published 28 Sep 2015
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Scheme 1: The synthesis of PT based conjugated systems with the TTF unit incorporated within the polymer back...
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Scheme 2: PT with pendant TTF units, prepared by electropolymerisation.
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Figure 1: Cyclic voltammograms of copolymers electrodeposited from nitrobenzene solutions of TTF modified mon...
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Scheme 3: PT with pendant TTF units prepared by electropolymerisation and post-modification of polymerised PT...
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Scheme 4: Synthesis of PT with pendant TTF by post-modification of the polymer prepared by direct arylation.
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Scheme 5: Retrosynthetic scheme for the synthesis of the monomer building block which is required for the pre...
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Scheme 6: Synthesis of bisfunctionalised derivatives of vinylene trithiocarbonate 21 and 25c required for syn...
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Scheme 7: Retrosynthetic scheme for the synthesis of the building block which is required for the preparation...
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Scheme 8: The monomers 14a, 14c and electropolymerisation of 28a.
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Figure 2: Cyclic voltammograms of a thin film of 34 at various scan rates (25 mV, 50 × n mV/s, n = 1–10). Ada...
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Scheme 9: Chemical polymerisation of 14b into polymers 35, 37 and 39.
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Figure 3: Spectroelectrochemistry of polymers 37 (a) and 34 (b) as thin films deposited on the working electr...
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Scheme 10: Photoinduced charge transfer from the TTF of polymer 39 to PC61BM.
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Scheme 11: Electropolymerisation of 40 and 41 into polymers 45 and 46, respectively, and Stille polymerisation...
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Scheme 12: The synthesis of polymer 48.
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Figure 4: Tapping mode AFM height images of polymer 48 film spin-coated from chlorobenzene (left) and chlorof...
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Scheme 13: The synthesis of TTF-sexithiophene system 51 and the structure of the parent sexithiophene 53.
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Scheme 14: The synthesis of TTF-oligothiophene H-shaped systems 54 (n = 0–2).
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Scheme 15: The oxidation of a fused TTF-oligothiophene system.
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Figure 5: Molecular structure and packing arrangement of compound 54 (n = 2). Adapted by permission from [92]. Co...
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Figure 6: AFM tapping mode images of the compound 54 (n = 1) film cast on an untreated SiO2 substrate surface...
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- Full Research Paper
- Published 10 Jul 2015
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Figure 1: Compounds 1–3.
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Scheme 1: Synthesis of compound 4.
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Scheme 2: Synthesis of compounds 1 and 2.
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Figure 2: UV–vis absorption spectra of 10−5 M solutions of compounds 1 (black) and 2 (red) in dichloromethane....
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Figure 3: Cyclic voltammograms showing the reduction (left) and oxidation (right) of compounds 1 (top) and 2 ...
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Figure 4: Optimised structures of 1 (left), 2 (centre) and 3 (right).
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Figure 5: Output characteristics of OFETs fabricated using compound 2 in CHCl3 with OTS (top) and PFBT/OTS (b...
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Figure 6: AFM images of OFET devices fabricated using compound 2 in CHCl3 with OTS (left) and PFBT/OTS (right...
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- Full Research Paper
- Published 19 Nov 2014
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Figure 1: The structures of the star-shaped oligofluorenes with BODIPY cores, Y-Bn (n = 1–4) and T-Bn (n = 1–...
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Scheme 1: Synthesis of the Y-Bn (n = 1–4) series.
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Scheme 2: Synthesis of the T-Bn (n = 1–4) series.
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Figure 2: The samples of oligofluorene BODIPY solutions in toluene under ambient light (left) and UV illumina...
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Figure 3: The normalised absorption (solid lines) and emission (dash lines) spectra of Y-Bn (n = 1–4) (left p...
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Figure 4: Optimised structures of T-B1 (left) and Y-B1 (right).
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Figure 5: HOMO−1 (bottom, left), HOMO (bottom, right), LUMO (top, left) and LUMO+1 (top, right) of Y-B1.
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Figure 6: HOMO−1 (bottom, left), HOMO (bottom, right), LUMO (top, left) and LUMO+1 (top, right) of T-B1.
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- Full Research Paper
- Published 18 Nov 2014
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Figure 1: Chemical structures of DPP core 1 and BODIPY core 2.
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Scheme 1: Synthesis of triads 9 and 10. Reagents and conditions: (i) phosphoryl chloride, N,N-dimethylformami...
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Figure 2: Cyclic voltammetry of 9 (black) and 10 (red) in solution (left) and thin-film (right). The experime...
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Figure 3: Normalised UV–vis absorption spectra of 9 (black), 10 (red) and DPP core (11, green) in dichloromet...
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Figure 4: Structure of the dithieno-DPP (11) core.
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Figure 5: BOD-T4 structure reported by Harriman et al. [50].
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Figure 6: Electrostatic potential charges for each unit in compounds 9 and 10: radical anion (blue), neutral ...
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Figure 7: Electrostatic potential charges for each unit in (2Th)2DPP and (3Th)2DPP radical anion (blue), neut...
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Figure 8: Frontier orbitals for radical anion SOMO (top), neutral HOMO (bottom) of 9 (left) and 10 (right).
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Figure 9: Incident photon to converted electron (IPCE) ratio or external quantum efficiency (EQE) for 9:PC71B...
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Figure 10: J–V for 9:PC71BM (1:3) and 10:PC71BM (1:3) in the dark.
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Figure 11: J–V for 9:PC71BM (1:3) and 10:PC71BM (1:3) under illumination at 100 mW cm−2 with an AM1.5 G source....
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Figure 12: Tapping mode AFM height images for 9:PC71BM (1:3) (left) and 10:PC71BM (1:3) (right) on fused silic...
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- Full Research Paper
- Published 27 Jun 2013
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Figure 1: Labelled truxene and compounds T1 and T4.
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Scheme 1: Synthesis of the thiophene-fluorene arm for the 3-isomer.
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Scheme 2: Synthesis of the thiophene-fluorene arm for the 4-isomer.
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Scheme 3: Coupling of arms to the truxene core.
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Scheme 4: Synthesis of T4-4FTh.
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Figure 2: Normalised absorbance (solid) and emission (dashed) of materials in solution (dichloromethane).
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Figure 3: HOMO−1 (bottom, left), HOMO (bottom, right), LUMO (top, left) and LUMO+1 (top, right) of T1-3FTh.
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Figure 4: HOMO−1 (bottom, left), HOMO (bottom, right), LUMO (top, left) and LUMO+1 (top, right) of T1-4FTh.
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- Published 22 Dec 2011
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Figure 1: Dimethylaminophenylene end-capped sexithiophenes 1a and 1b, and dialkyl end-capped sexithiophenes 2a...
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Scheme 1: The synthesis of functionalised oligothiophenes 1a,b and 2a,b. Reagents and conditions: a) NBS, CH3...
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Figure 2: Solid-state voltammograms of 1b and 2b, as spin-coated films on ITO glass, versus Ag/AgCl reference...
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Figure 3: Absorption spectra in solution (dichloromethane) and solid state.
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Figure 4: UV–visible spectroelectrochemical measurements of 1b (left) and 2b (right) drop-cast onto ITO glass....
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Figure 5: Absorption spectra for 1b and 2b, together with the absorption and emission profiles for the CdSe(Z...
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Figure 6: The absorption spectra of increasing sexithiophene concentration with HDA capped CdSe(ZnS) quantum ...
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Figure 7: Photoluminescence quenching experiments; the effect of increasing sexithiophene concentration with ...
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- Full Research Paper
- Published 21 Oct 2010
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Figure 1: Chemical structures of compounds 1–3.
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Scheme 1: Acid-catalysed behaviour of 4,5-bis(2-arylhydroxymethyl)-1,3-dithiole-2-thiones 2.
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Scheme 2: The proposed mechanism for the formation of 3.
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Scheme 3: The proposed mechanism for the decomposition of 13 in the presence of perchloric acid.
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Figure 2: Generalised structure of diol 17.
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Scheme 4: Reagents and conditions: (i) LDA (1 equiv), 2,4-dimethoxybenzaldehyde (1 equiv), then repeat, −78 °...
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Scheme 5: Reagents and conditions: (i) ethylenediamine, AcOH, MeOH; (ii) P(OEt)3, 120 °C, 3 h.
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Figure 3: Molecular structure and numbering scheme of compound 22 with Hs omitted.
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Scheme 6: Reagents and conditions: (i) P(OEt)3, reflux; (ii) Hg(OAc)2, CH2Cl2/AcOH; (iii) NaOEt, THF, reflux,...
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Figure 4: Molecular structure of 28 with the tetrabutylammonium cation omitted.
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Figure 5: Packing diagram of 28 identifying close intermolecular contacts.
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Figure 6: UV–visible spectra of 3, 25, 27 and 28 in CH2Cl2 solution.
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Figure 7: Cyclic voltammograms of compounds 3, 25, 27, and 28. Glassy carbon working electrode, using Pt wire...
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