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Corbet CHWA, van den Bersselaar BWL, de Waal BFM, Reynaerts R, Mali KS, De Feyter S, Jonas AM, Meijer EW, Vantomme G. Self-Assembly of Discrete Oligomers of Naphthalenediimides in Bulk and on Surfaces. Chemistry 2024; 30:e202303107. [PMID: 38009432 DOI: 10.1002/chem.202303107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 11/28/2023]
Abstract
Here, we report on the synthesis of discrete oligomers of alkyl-bridged naphthalenediimides (NDIs) and study their molecular nanostructures both in bulk, in solution, and at the liquid-solid interface. Via an iterative synthesis method, multiple NDI cores were bridged with short and saturated alkyl-diamines (C3 and C12 ) or long and unsaturated alkyl-diamines (u2 C33 to u8 C100 ) at their imide termini. The strong intermolecular interaction between the NDI cores was observed by probing their photophysical properties in solution. In bulk, the discrete NDI oligomers preferentially ordered in lamellar morphologies, irrespective of whether a saturated or unsaturated spacer was employed. Moreover, both the molecular architecture as well as the crystallization conditions play a significant role in the nanoscale ordering. The long unsaturated alkyl chains lead preferably to folded-chain conformations while their saturated analogues form stretched arrangements. At the solution-solid interface, well-defined lamellar regions were observed. These results show that precision in chemical structure alone is not sufficient to reach well-defined structures of discrete oligomers, but that it must be combined with precision in processing conditions.
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Affiliation(s)
- Christiaan H W A Corbet
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Bart W L van den Bersselaar
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Bas F M de Waal
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Robby Reynaerts
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - Kunal S Mali
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - Alain M Jonas
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université catholique de Louvain-UCLouvain, Ottignies-Louvain-la-Neuve, Louvain-la-Neuve, B-1348, Belgium
| | - E W Meijer
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
- School of Chemistry and RNA Institute, University of New South Wales, Sydney, Australia
| | - Ghislaine Vantomme
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
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Balambiga B, Devibala P, Imran PM, Bhuvanesh NSP, Nagarajan S. High mobility and ON/OFF ratio of solution-processable p-channel OFETs from arylacetylene end-capped alkoxyphenanthrenes. Chemphyschem 2022; 23:e202200350. [PMID: 35867609 DOI: 10.1002/cphc.202200350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/30/2022] [Indexed: 11/10/2022]
Abstract
New arylacetylene end-capped alkoxyphenanthrenes were synthesized and demonstrated as the best active layer for solution-processable p -channel organic field-effect transistors. The alkoxy chain embedded compounds exhibited enhanced solubility and induced non-covalent interactions resulting in effective molecular packing. The 'Lewis soft' heteroatoms direct the most stable conformation with dihedral angles possible for molecular interactions, and energy levels. DFT studies supported the finetuning of FMOs, with high HOMO levels ~-5.2 eV ensuring a low barrier for charge injection. OFET devices exhibited a maximum charge carrier mobility up to 1.30 cm 2 /Vs with the highest ON/OFF ratio of 10 7 . The strong π-π interactions and the crystallinity of the films are well supported by GIXRD and SEM analysis.
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Affiliation(s)
| | | | | | - Natamai S P Bhuvanesh
- Texas A&M University College Station: Texas A&M University, Chemistry, UNITED STATES
| | - Samuthira Nagarajan
- Central University of Tamil Nadu, Chemistry, Neelakudi, 610101, Thiruvarur, INDIA
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Ahuja M, Saini SK, Chaudhary N, Kumar M, Singh RK, Kumar R. Tuning of energy levels, transport properties and device performance of naphthalenediimide derivatives by introduction of Michael addition reaction. NEW J CHEM 2022. [DOI: 10.1039/d2nj01979e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
NDI derivatives have been synthesized via Michael addition reaction with uplifted HOMO–LUMO energy levels and strong CT interaction in MA products generally not achieved by simple imide-N substitutions.
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Affiliation(s)
- Mehak Ahuja
- Photovoltaic Metrology Group, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, National Measurement Institute of India, Dr K. S. Krishnan Marg, New Delhi, 110012, India
| | - Saurabh K. Saini
- Photonics Materials Metrology Group, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi, 110012, India
| | - Neeraj Chaudhary
- Photovoltaic Metrology Group, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, National Measurement Institute of India, Dr K. S. Krishnan Marg, New Delhi, 110012, India
| | - Mahesh Kumar
- Photonics Materials Metrology Group, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi, 110012, India
| | - Rajiv K. Singh
- Photovoltaic Metrology Group, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, National Measurement Institute of India, Dr K. S. Krishnan Marg, New Delhi, 110012, India
| | - Rachana Kumar
- Photovoltaic Metrology Group, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, National Measurement Institute of India, Dr K. S. Krishnan Marg, New Delhi, 110012, India
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