1
|
Humphreys J, Malagreca F, Hume PA, Davies ES, Argent SP, Bradshaw TD, Amabilino DB. Highly electron deficient diketopyrrolopyrroles. Chem Commun (Camb) 2023; 59:1613-1616. [PMID: 36632697 DOI: 10.1039/d2cc06770f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The synthesis, spectroelectrochemical and structural characteristics of highly electron-accepting diketopyrrrolopyrrole (DPP) molecules with adjoining pyridinium rings is reported, along with an assessment of their toxicity, which is apparently low. The compounds show reversible electrochemistry and in one subfamily a massive increase in molar extinction coefficient upon electrochemical reduction.
Collapse
Affiliation(s)
- Joshua Humphreys
- GSK Carbon Neutral Laboratories for Sustainable Chemistry, School of Chemistry, University of Nottingham, Triumph Road, Nottingham, NG7 2TU, UK
| | - Ferdinando Malagreca
- GSK Carbon Neutral Laboratories for Sustainable Chemistry, School of Chemistry, University of Nottingham, Triumph Road, Nottingham, NG7 2TU, UK.,School of Pharmacy, University of Nottingham, University Park, NG7 2RD, UK
| | - Paul A Hume
- MacDiarmid Institute for Advanced Materials and Nanotechnology and School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6010, New Zealand
| | - E Stephen Davies
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK
| | - Stephen P Argent
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK
| | - Tracey D Bradshaw
- School of Pharmacy, University of Nottingham, University Park, NG7 2RD, UK
| | - David B Amabilino
- GSK Carbon Neutral Laboratories for Sustainable Chemistry, School of Chemistry, University of Nottingham, Triumph Road, Nottingham, NG7 2TU, UK.,Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Consejo Superior de Investigaciones Científicas, Campus Universitari de Bellaterra, Cerdanyola del Vallès 08193, Spain.
| |
Collapse
|
2
|
Luňák S, Weiter M, Vala M. Complete Set of Diketopyrrolopyrrole Centrosymmetrical Cofacial Stacked Pairs. Chemphyschem 2022; 23:e202200252. [PMID: 35770507 DOI: 10.1002/cphc.202200252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/29/2022] [Indexed: 11/12/2022]
Abstract
Stacked centrosymmetrical dimers and simultaneously H-bonded and stacked hexamers of thiophene-substituted diketopyrrolopyrrole (ThDPP) were studied using DFT as models for crystals with slipped-stacked molecules in 1D columns. Eight stacked dimer arrangements were found, six of which are driven by the minimisation of electron repulsion and realised by placing the partially negatively charged atoms of the diketopyrrolopyrrole rings below the centre of an adjancent thiophene ring. Four of these stacks are related to N,N'-diacylated derivative. An analogous set of eight stacks was discovered computationally for phenyl-substituted DPP (PhDPP), four of which are known among H-bonded DPP pigments, and one more among N,N'-dialkylated PhDPP derivatives. The results shed more light on the mechanisms that drive the formation of stacks between nonaromatic (DPP) and aromatic (Th, Ph) rings. The excitation energies of the lowest four singlet states computed by TD DFT enabled excitonic coupling and energy separation between Frenkel-resonsnce-type and charge-transfer states to be established, depending on the equilibrium stack geometry.
Collapse
Affiliation(s)
- Stanislav Luňák
- Brno University of Technology: Vysoke uceni technicke v Brne, Faculty of Chemistry, Purkyňova 464/118, 61200, Brno, CZECH REPUBLIC
| | - Martin Weiter
- Brno University of Technology: Vysoke uceni technicke v Brne, Faculty of Chemistry, Purkyňova 464/118, 61200, Brno, CZECH REPUBLIC
| | - Martin Vala
- Brno University of Technology: Vysoke uceni technicke v Brne, Faculty of Chemistry, Purkyňova 464/118, 61200, Brno, CZECH REPUBLIC
| |
Collapse
|
3
|
Pieczykolan M, Derr JB, Chrayteh A, Koszarna B, Clark JA, Vakuliuk O, Jacquemin D, Vullev VI, Gryko DT. The Synthesis and Photophysical Properties of Weakly Coupled Diketopyrrolopyrroles. Molecules 2021; 26:molecules26164744. [PMID: 34443329 PMCID: PMC8398321 DOI: 10.3390/molecules26164744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 07/21/2021] [Accepted: 07/25/2021] [Indexed: 11/22/2022] Open
Abstract
Three centrosymmetric diketopyrrolopyrroles possessing either two 2-(2′-methoxyphenyl)benzothiazole or two 2-(2′-methoxyphenyl)benzoxazolo-thiophene scaffolds were synthesized in a straightforward manner, and their photophysical properties were investigated. Their emission was significantly bathochromically shifted as compared with that of simple DPPs reaching 650 nm. Judging from theoretical calculations performed with time-dependent density functional theory, in all three cases the excited state was localized on the DPP core and there was no significant CT character. Consequently, emission was almost independent of solvents’ polarity. DPPs possessing 2,5-thiophene units vicinal to DPP core play a role in electronic transitions, resulting in bathochromically shifted absorption and emission. Interestingly, as judged from transient absorption dynamics, intersystem crossing was responsible for the deactivation of the excited states of DPPs possessing para linkers but not in the case of dye bearing meta linker.
Collapse
Affiliation(s)
- Michał Pieczykolan
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland; (M.P.); (B.K.); (O.V.)
| | - James B. Derr
- Department of Biochemistry, University of California, Riverside, CA 92521, USA;
| | - Amara Chrayteh
- CEISAM Laboratory—UMR 6230, University of Nantes, CNTS, 44035 Nantes, France;
| | - Beata Koszarna
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland; (M.P.); (B.K.); (O.V.)
| | - John A. Clark
- Department of Bioengineering, University of California, Riverside, CA 92521, USA;
| | - Olena Vakuliuk
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland; (M.P.); (B.K.); (O.V.)
| | - Denis Jacquemin
- CEISAM Laboratory—UMR 6230, University of Nantes, CNTS, 44035 Nantes, France;
- Correspondence: (D.J.); (V.I.V.); (D.T.G.)
| | - Valentine I. Vullev
- Department of Biochemistry, University of California, Riverside, CA 92521, USA;
- Department of Bioengineering, University of California, Riverside, CA 92521, USA;
- Correspondence: (D.J.); (V.I.V.); (D.T.G.)
| | - Daniel T. Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland; (M.P.); (B.K.); (O.V.)
- Correspondence: (D.J.); (V.I.V.); (D.T.G.)
| |
Collapse
|
4
|
Mastropasqua Talamo M, Pop F, Avarvari N. Straightforward N-alkylation of diketopyrrolopyrroles through the Mitsunobu reaction with benzyl, α-branched, and chiral alcohols. Chem Commun (Camb) 2021; 57:6514-6517. [PMID: 34105540 DOI: 10.1039/d1cc02472h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The N-alkylation of diketopyrrolopyrroles (DPPs) represents a fundamental step to ensure solubility and further processability. Commonly used nucleophilic substitution in halogenated derivatives is replaced in this work by the Mitsunobu reaction affording unprecedented DPPs with α-branched and chiral chains.
Collapse
Affiliation(s)
| | - Flavia Pop
- Univ. Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| | - Narcis Avarvari
- Univ. Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| |
Collapse
|
5
|
Humphreys J, Pop F, Hume PA, Murphy AS, Lewis W, Davies ES, Argent SP, Amabilino DB. Solid state structure and properties of phenyl diketopyrrolopyrrole derivatives. CrystEngComm 2021. [DOI: 10.1039/d1ce00039j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Crystal structures of the title compounds show diverse packing by interactions of auxochromes giving materials with varied optoelectronic properties.
Collapse
Affiliation(s)
- Joshua Humphreys
- The GSK Carbon Neutral Laboratories for Sustainable Chemistry
- The University of Nottingham Jubilee Campus
- Nottingham NG7 2TU
- UK
- School of Chemistry
| | - Flavia Pop
- The GSK Carbon Neutral Laboratories for Sustainable Chemistry
- The University of Nottingham Jubilee Campus
- Nottingham NG7 2TU
- UK
- School of Chemistry
| | - Paul A. Hume
- MacDiarmid Institute for Advanced Materials and Nanotechnology and School of Chemical and Physical Sciences
- Victoria University of Wellington
- Wellington 6010
- New Zealand
| | - Alanna S. Murphy
- The GSK Carbon Neutral Laboratories for Sustainable Chemistry
- The University of Nottingham Jubilee Campus
- Nottingham NG7 2TU
- UK
- School of Chemistry
| | - William Lewis
- School of Chemistry
- University of Nottingham
- Nottingham NG7 2RD
- UK
| | | | | | - David B. Amabilino
- The GSK Carbon Neutral Laboratories for Sustainable Chemistry
- The University of Nottingham Jubilee Campus
- Nottingham NG7 2TU
- UK
- School of Chemistry
| |
Collapse
|
6
|
Rani A, Kavianinia I, Hume P, De Leon-Rodriguez LM, Kihara S, Williams DE, McGillivray DJ, Plank NOV, Gerrard J, Hodgkiss JM, Brimble MA. Directed self-assembly of peptide-diketopyrrolopyrrole conjugates - a platform for bio-organic thin film preparation. SOFT MATTER 2020; 16:6563-6571. [PMID: 32588868 DOI: 10.1039/d0sm01071e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Increased water solubility and long-range intermolecular ordering have been introduced into the fluorescent organic molecule thiophene-diketopyrrolopyrrole (TDPP) via its conjugation to the octapeptide HEFISTAH, which is derived from the protein-protein β-interface of the homo-tetramer protein diaminopimelate decarboxylase. The octapeptide, and its TDPP mono- and cross-linked conjugates were synthesised using 9-fluorenylmethoxycarbonyl (Fmoc) based solid-phase peptide synthesis (SPPS). Unlike the unmodified peptide, the resulting mono-linked and cross-linked peptides showed a fibrous morphology and formed hydrogels at 4 wt% in water at neutral pH, but failed to assemble at pH 2 and pH 9. Further peptide characterization showed that the TDPP organic core enhances peptide self-assembly and that both peptides assembled into fibers with a parallel β-sheet structure. Furthermore, UV-vis spectroscopic analysis suggests that the TDPP molecules form H-type aggregates where the chromophores are likely to be co-facially packed, but rotationally and/or laterally offset from one another. This intermolecular coupling indicates that π-π stacking interactions are highly likely - a favourable sign for charge transport. The enhanced aqueous solubility and self-assembling properties of the TDPP-peptide conjugates allowed the successful preparation of thin films. Atomic force microscopy, X-ray diffraction and UV-vis spectroscopic analysis of these thin films revealed that the hybrid materials retained a fibrous morphology, β-sheet structures and strong intermolecular coupling between neighbouring TDPP molecules. These results open an exciting avenue for bio-organic materials development, through structural and electronic tuning of the TDPP core.
Collapse
Affiliation(s)
- Aakanksha Rani
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Iman Kavianinia
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
| | - Paul Hume
- MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand and School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6021, New Zealand
| | - Luis M De Leon-Rodriguez
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand.
| | - Shinji Kihara
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - David E Williams
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Duncan J McGillivray
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Natalie O V Plank
- MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand and School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6021, New Zealand
| | - Juliet Gerrard
- School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Justin M Hodgkiss
- MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand and School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6021, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand and Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
| |
Collapse
|
7
|
Gutkowski K, Skonieczny K, Bugaj M, Jacquemin D, Gryko DT. N-Arylation of Diketopyrrolopyrroles with Aryl Triflates. Chem Asian J 2020; 15:1369-1375. [PMID: 32154982 DOI: 10.1002/asia.202000129] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/09/2020] [Indexed: 11/09/2022]
Abstract
A new methodology for the double N-arylation of diketopyrrolopyrroles with aryl triflates has been developed. It is now possible to prepare diketopyrrolopyrroles bearing N-substituents derived from naphthalene, anthracene and coumarin in two steps from commercially available phenols. This represents the first time arenes lacking strong electron-withdrawing groups were inserted onto lactamic nitrogen atoms via arylation. The ability to incorporate heretofore unprecedented substituents translates to increased modulation of the resulting photophysical properties such as switching-on/off solvatofluorochromism. TD-DFT calculations have been performed to explore the nature of the relevant excited states. This new synthetic method made it possible to elucidate the influence of such substituents on the absorption and emission properties of tetraaryl substituted diketopyrrolopyrroles.
Collapse
Affiliation(s)
- Krzysztof Gutkowski
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland
| | - Kamil Skonieczny
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland
| | - Marta Bugaj
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland
| | - Denis Jacquemin
- Université de Nantes, CNRS, CEISAM UMR 6230, 44000, Nantes, France
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224, Warsaw, Poland
| |
Collapse
|