1
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Qiao X, Sil A, Sangtarash S, Smith SM, Wu C, Robertson CM, Nichols RJ, Higgins SJ, Sadeghi H, Vezzoli A. Nuclear Magnetic Resonance Chemical Shift as a Probe for Single-Molecule Charge Transport. Angew Chem Int Ed Engl 2024; 63:e202402413. [PMID: 38478719 DOI: 10.1002/anie.202402413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Indexed: 04/05/2024]
Abstract
Existing modelling tools, developed to aid the design of efficient molecular wires and to better understand their charge-transport behaviour and mechanism, have limitations in accuracy and computational cost. Further research is required to develop faster and more precise methods that can yield information on how charge transport properties are impacted by changes in the chemical structure of a molecular wire. In this study, we report a clear semilogarithmic correlation between charge transport efficiency and nuclear magnetic resonance chemical shifts in multiple series of molecular wires, also accounting for the presence of chemical substituents. The NMR data was used to inform a simple tight-binding model that accurately captures the experimental single-molecule conductance values, especially useful in this case as more sophisticated density functional theory calculations fail due to inherent limitations. Our study demonstrates the potential of NMR spectroscopy as a valuable tool for characterising, rationalising, and gaining additional insights on the charge transport properties of single-molecule junctions.
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Affiliation(s)
- X Qiao
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
| | - A Sil
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
| | - S Sangtarash
- Device Modelling Group, School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - S M Smith
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
| | - C Wu
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
- Institute of Optoelectronic Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - C M Robertson
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
| | - R J Nichols
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
| | - S J Higgins
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
| | - H Sadeghi
- Device Modelling Group, School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - A Vezzoli
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
- Stephenson Institute for Renewable Energy, University of Liverpool, Peach Street, Liverpool, L69 7ZF, United Kingdom
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2
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Li X, Ge W, Guo S, Bai J, Hong W. Characterization and Application of Supramolecular Junctions. Angew Chem Int Ed Engl 2023; 62:e202216819. [PMID: 36585932 DOI: 10.1002/anie.202216819] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/01/2023]
Abstract
The convergence of supramolecular chemistry and single-molecule electronics offers a new perspective on supramolecular electronics, and provides a new avenue toward understanding and application of intermolecular charge transport at the molecular level. In this review, we will provide an overview of the advances in the characterization technique for the investigation of intermolecular charge transport, and summarize the experimental investigation of several non-covalent interactions, including π-π stacking interactions, hydrogen bonding, host-guest interactions and σ-σ interactions at the single-molecule level. We will also provide a perspective on supramolecular electronics and discuss the potential applications and future challenges.
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Affiliation(s)
- Xiaohui Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering & College of Materials & IKKEM, Xiamen University, Xiamen, 361005, China
| | - Wenhui Ge
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering & College of Materials & IKKEM, Xiamen University, Xiamen, 361005, China
| | - Shuhan Guo
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering & College of Materials & IKKEM, Xiamen University, Xiamen, 361005, China
| | - Jie Bai
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering & College of Materials & IKKEM, Xiamen University, Xiamen, 361005, China
| | - Wenjing Hong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering & College of Materials & IKKEM, Xiamen University, Xiamen, 361005, China
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3
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Heckelmann I, Lu Z, Prentice JCA, Auras F, Ronson TK, Friend RH, Nitschke JR, Feldmann S. Supramolecular Self-Assembly as a Tool To Preserve the Electronic Purity of Perylene Diimide Chromophores. Angew Chem Int Ed Engl 2023; 62:e202216729. [PMID: 36652344 PMCID: PMC10947190 DOI: 10.1002/anie.202216729] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 01/02/2023] [Accepted: 01/18/2023] [Indexed: 01/19/2023]
Abstract
Organic semiconductors are promising for efficient, printable optoelectronics. However, strong excited-state quenching due to uncontrolled aggregation limits their use in devices. We report on the self-assembly of a supramolecular pseudo-cube formed from six perylene diimides (PDIs). The rigid, shape-persistent cage sets the distance and orientation of the PDIs and suppresses intramolecular rotations and vibrations, leading to non-aggregated, monomer-like properties in solution and the solid state, in contrast to the fast fluorescence quenching in the free ligand. The stabilized excited state and electronic purity in the cage enables the observation of delayed fluorescence due to a bright excited multimer, acting as excited-state reservoir in a rare case of benign inter-chromophore interactions in the cage. We show that self-assembly provides a powerful tool for retaining and controlling the electronic properties of chromophores, and to bring molecular electronics devices within reach.
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Affiliation(s)
- Ina Heckelmann
- Cavendish LaboratoryUniversity of CambridgeCambridgeCB30HEUK
- Institute for Quantum ElectronicsETH Zürich8093ZurichSwitzerland
| | - Zifei Lu
- Yusuf Hamied Department of ChemistryUniversity of CambridgeCambridgeCB21EWUK
| | | | - Florian Auras
- Cavendish LaboratoryUniversity of CambridgeCambridgeCB30HEUK
- Department of Synthetic Materials and Functional DevicesMax Planck Institute of Microstructure Physics06120HalleGermany
| | - Tanya K. Ronson
- Yusuf Hamied Department of ChemistryUniversity of CambridgeCambridgeCB21EWUK
| | | | | | - Sascha Feldmann
- Cavendish LaboratoryUniversity of CambridgeCambridgeCB30HEUK
- Rowland InstituteHarvard UniversityCambridgeMA 02142USA
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4
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Gu MW, Lai CT, Ni IC, Wu CI, Chen CH. Increased Surface Density of States at the Fermi Level for Electron Transport Across Single-Molecule Junctions. Angew Chem Int Ed Engl 2023; 62:e202214963. [PMID: 36484557 DOI: 10.1002/anie.202214963] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/30/2022] [Accepted: 12/09/2022] [Indexed: 12/13/2022]
Abstract
Fermi's golden rule, a remarkable concept for the transition probability involving continuous states, is applicable to the interfacial electron-transporting efficiency via correlation with the surface density of states (SDOS). Yet, this concept has not been reported to tailor single-molecule junctions where gold is an overwhelmingly popular electrode material due to its superior amenability in regenerating molecular junctions. At the Fermi level, however, the SDOS of gold is small due to its fully filled d-shell. To increase the electron-transport efficiency, herein, gold electrodes are modified by a monolayer of platinum or palladium that bears partially filled d-shells and exhibits significant SDOS at the Fermi energy. An increase by 2-30 fold is found for single-molecule conductance of α,ω-hexanes bridged via common headgroups. The improved junction conductance is attributed to the electrode self-energy which involves a stronger coupling with the molecule and a larger SDOS participated by d-electrons at the electrode-molecule interfaces.
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Affiliation(s)
- Mong-Wen Gu
- Department of Chemistry and Center for Emerging Materials and Advanced Devices, National Taiwan University, Taipei, 10617, Taiwan
| | - Chih-Ta Lai
- Department of Chemistry and Center for Emerging Materials and Advanced Devices, National Taiwan University, Taipei, 10617, Taiwan
| | - I-Chih Ni
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, 10617, Taiwan
| | - Chih-I Wu
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, 10617, Taiwan
| | - Chun-Hsien Chen
- Department of Chemistry and Center for Emerging Materials and Advanced Devices, National Taiwan University, Taipei, 10617, Taiwan
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5
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Harrison DP, Grotjahn R, Naher M, Ghazvini SMBH, Mazzucato DM, Korb M, Moggach SA, Lambert C, Kaupp M, Low PJ. Quantum Interference in Mixed-Valence Complexes: Tuning Electronic Coupling Through Substituent Effects. Angew Chem Int Ed Engl 2022; 61:e202211000. [PMID: 36031588 PMCID: PMC9828041 DOI: 10.1002/anie.202211000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Indexed: 01/12/2023]
Abstract
Whilst 2- or 5-OMe groups on the bridging phenylene ring in [{Cp*(dppe)RuC≡C}2 (μ-1,3-C6 H4 )]+ have little influence on the electronic structure of this weakly coupled mixed-valence complex, a 4-OMe substituent enhances ground state electron delocalization, and increases the intensity of the IVCT transition. Vibrational frequency and TDDFT calculations (LH20t-D3(BJ), def2-SVP, COSMO (CH2 Cl2 )) on ([{Cp*(dppe)RuC≡C}2 (μ-1,3-C6 H3 -n-OMe)]+ (n=2, 4, 5) models are in excellent agreement with the experimental results. The stronger ground state coupling is attributed to the change in composition of the β-HOSO brought about by the 4-OMe group, which is ortho or para to each of the metal fragments. The intensity of the IVCT transition increases with the greater overlap of the β-HOSO and β-LUSO, whilst the relative phases of the β-HOSO and β-LUSO in the 4-OMe substituted complex are consistent with predictions of constructive quantum interference from molecular circuit rules.
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Affiliation(s)
- Daniel P. Harrison
- School of Molecular SciencesUniversity of Western Australia35 Stirling HighwayCrawleyWA, 6009Australia
| | - Robin Grotjahn
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 13510623BerlinGermany,Present address: Department of ChemistryUniversity of California, Irvine1102 Natural Science IIIrvineCA 92697-2025USA
| | - Masnun Naher
- School of Molecular SciencesUniversity of Western Australia35 Stirling HighwayCrawleyWA, 6009Australia
| | - Seyed M. B. H. Ghazvini
- School of Molecular SciencesUniversity of Western Australia35 Stirling HighwayCrawleyWA, 6009Australia
| | - Daniel M. Mazzucato
- School of Molecular SciencesUniversity of Western Australia35 Stirling HighwayCrawleyWA, 6009Australia
| | - Marcus Korb
- School of Molecular SciencesUniversity of Western Australia35 Stirling HighwayCrawleyWA, 6009Australia
| | - Stephen A. Moggach
- School of Molecular SciencesUniversity of Western Australia35 Stirling HighwayCrawleyWA, 6009Australia
| | - Colin Lambert
- Department of PhysicsUniversity of LancasterLancasterLA1 4YBUK
| | - Martin Kaupp
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 13510623BerlinGermany
| | - Paul J. Low
- School of Molecular SciencesUniversity of Western Australia35 Stirling HighwayCrawleyWA, 6009Australia
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6
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Pavlović RZ, Zhiquan L, Finnegan TJ, Waudby CA, Wang X, Gunawardana VWL, Zhu X, Wong CM, Hamby T, Moore CE, Hoefer N, McComb DW, Sevov CS, Badjić JD. Closed Aromatic Tubes-Capsularenes. Angew Chem Int Ed Engl 2022; 61:e202211304. [PMID: 35981224 PMCID: PMC9825917 DOI: 10.1002/anie.202211304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Indexed: 01/11/2023]
Abstract
In this study, we describe a synthetic method for incorporating arenes into closed tubes that we name capsularenes. First, we prepared vase-shaped molecular baskets 4-7. The baskets comprise a benzene base fused to three bicycle[2.2.1]heptane rings that extend into phthalimide (4), naphthalimide (6), and anthraceneimide sides (7), each carrying a dimethoxyethane acetal group. In the presence of catalytic trifluoroacetic acid (TFA), the acetals at top of 4, 6 and 7 change into aliphatic aldehydes followed by their intramolecular cyclization into 1,3,5-trioxane (1 H NMR spectroscopy). Such ring closure is nearly a quantitative process that furnishes differently sized capsularenes 1 (0.7×0.9 nm), 8 (0.7×1.1 nm;) and 9 (0.7×1.4 nm;) characterized by X-Ray crystallography, microcrystal electron diffraction, UV/Vis, fluorescence, cyclic voltammetry, and thermogravimetry. With exceptional rigidity, unique topology, great thermal stability, and perhaps tuneable optoelectronic characteristics, capsularenes hold promise for the construction of novel organic electronic devices.
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Affiliation(s)
- Radoslav Z. Pavlović
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
| | - Lei Zhiquan
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
| | - Tyler J. Finnegan
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
| | | | - Xiuze Wang
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
| | | | - Xingrong Zhu
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
| | - Curt M. Wong
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
| | - Taylor Hamby
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
| | - Curtis E. Moore
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
| | - Nicole Hoefer
- Center for Electron Microscopy and AnalysisThe Ohio State UniversityColumbusOH 43210USA
| | - David W. McComb
- Center for Electron Microscopy and AnalysisThe Ohio State UniversityColumbusOH 43210USA,Department of Materials Science and EngineeringThe Ohio State UniversityColumbusOH 43210USA
| | - Christo S. Sevov
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
| | - Jovica D. Badjić
- Department of Chemistry & BiochemistryThe Ohio State University100W. 18 AvenueColumbusOH 43210USA
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7
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Xiao B, He S, Sun M, Zhou J, Wang Z, Li Y, Liu S, Nau WM, Chang S. Dynamic Interconversions of Single Molecules Probed by Recognition Tunneling at Cucurbit[7]uril-Functionalized Supramolecular Junctions. Angew Chem Int Ed Engl 2022; 61:e202203830. [PMID: 35417083 PMCID: PMC9324061 DOI: 10.1002/anie.202203830] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Indexed: 11/29/2022]
Abstract
We introduce a versatile recognition tunneling technique using doubly cucurbit[7]uril‐functionalized electrodes to form supramolecular junctions that capture analytes dynamically by host–guest complexation. This results in characteristic changes in their single‐molecule conductance. For structurally related drug molecules (camptothecin, sanguinarine, chelerythrine, and berberine) and mixtures thereof, we observed distinct current switching signals related to their intrinsic conductance properties as well as pH‐dependent effects which can be traced back to their different states (protonated versus neutral). The conductance variation of a single molecule with pH shows a sigmoidal distribution, allowing us to extract a pKa value for reversible protonation, which is consistent with the reported macroscopic results. The new electronic method allows the characterization of unmodified drug molecules and showcases the transfer of dynamic supramolecular chemistry principles to single molecules.
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Affiliation(s)
- Bohuai Xiao
- The State Key Laboratory of Refractories and Metallurgy, the Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China
| | - Suhang He
- School of Science, Jacobs University Bremen, 28759, Bremen, Germany
| | - Mingjun Sun
- The State Key Laboratory of Refractories and Metallurgy, the Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China
| | - Jianghao Zhou
- The State Key Laboratory of Refractories and Metallurgy, the Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China
| | - Zhiye Wang
- The State Key Laboratory of Refractories and Metallurgy, the Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China
| | - Yunchuan Li
- The State Key Laboratory of Refractories and Metallurgy, the Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China
| | - Simin Liu
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China
| | - Werner M Nau
- School of Science, Jacobs University Bremen, 28759, Bremen, Germany
| | - Shuai Chang
- The State Key Laboratory of Refractories and Metallurgy, the Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China
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8
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Naghibi S, Sangtarash S, Kumar VJ, Wu J, Judd MM, Qiao X, Gorenskaia E, Higgins SJ, Cox N, Nichols RJ, Sadeghi H, Low PJ, Vezzoli A. Redox-Addressable Single-Molecule Junctions Incorporating a Persistent Organic Radical. Angew Chem Int Ed Engl 2022; 61:e202116985. [PMID: 35289977 PMCID: PMC9322687 DOI: 10.1002/anie.202116985] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Indexed: 12/14/2022]
Abstract
Integrating radical (open-shell) species into non-cryogenic nanodevices is key to unlocking the potential of molecular electronics. While many efforts have been devoted to this issue, in the absence of a chemical/electrochemical potential the open-shell character is generally lost in contact with the metallic electrodes. Herein, single-molecule devices incorporating a 6-oxo-verdazyl persistent radical have been fabricated using break-junction techniques. The open-shell character is retained at room temperature, and electrochemical gating permits in situ reduction to a closed-shell anionic state in a single-molecule transistor configuration. Furthermore, electronically driven rectification arises from bias-dependent alignment of the open-shell resonances. The integration of radical character, transistor-like switching, and rectification in a single molecular component paves the way to further studies of the electronic, magnetic, and thermoelectric properties of open-shell species.
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Affiliation(s)
- Saman Naghibi
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | | | - Varshini J. Kumar
- School of Molecular SciencesUniversity of Western AustraliaCrawleyWestern Australia6009Australia
| | - Jian‐Zhong Wu
- School of ChemistrySouth China Normal UniversityGuangzhou510006P.R. China
| | - Martyna M. Judd
- Research School of ChemistryAustralian National UniversityCanberraATC 2601Australia
| | - Xiaohang Qiao
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Elena Gorenskaia
- School of Molecular SciencesUniversity of Western AustraliaCrawleyWestern Australia6009Australia
| | - Simon J. Higgins
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Nicholas Cox
- Research School of ChemistryAustralian National UniversityCanberraATC 2601Australia
| | - Richard J. Nichols
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Hatef Sadeghi
- School of EngineeringUniversity of WarwickCoventryCV4 7ALUK
| | - Paul J. Low
- School of Molecular SciencesUniversity of Western AustraliaCrawleyWestern Australia6009Australia
| | - Andrea Vezzoli
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
- Stephenson Institute for Renewable EnergyUniversity of LiverpoolPeach StreetLiverpoolL69 7ZFUK
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9
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Zhang C, Zou CL, Zhao Y, Dong CH, Wei C, Wang H, Liu Y, Guo GC, Yao J, Zhao YS. Organic printed photonics: From microring lasers to integrated circuits. Sci Adv 2015; 1:e1500257. [PMID: 26601256 PMCID: PMC4643768 DOI: 10.1126/sciadv.1500257] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 06/23/2015] [Indexed: 05/06/2023]
Abstract
A photonic integrated circuit (PIC) is the optical analogy of an electronic loop in which photons are signal carriers with high transport speed and parallel processing capability. Besides the most frequently demonstrated silicon-based circuits, PICs require a variety of materials for light generation, processing, modulation, and detection. With their diversity and flexibility, organic molecular materials provide an alternative platform for photonics; however, the versatile fabrication of organic integrated circuits with the desired photonic performance remains a big challenge. The rapid development of flexible electronics has shown that a solution printing technique has considerable potential for the large-scale fabrication and integration of microsized/nanosized devices. We propose the idea of soft photonics and demonstrate the function-directed fabrication of high-quality organic photonic devices and circuits. We prepared size-tunable and reproducible polymer microring resonators on a wafer-scale transparent and flexible chip using a solution printing technique. The printed optical resonator showed a quality (Q) factor higher than 4 × 10(5), which is comparable to that of silicon-based resonators. The high material compatibility of this printed photonic chip enabled us to realize low-threshold microlasers by doping organic functional molecules into a typical photonic device. On an identical chip, this construction strategy allowed us to design a complex assembly of one-dimensional waveguide and resonator components for light signal filtering and optical storage toward the large-scale on-chip integration of microscopic photonic units. Thus, we have developed a scheme for soft photonic integration that may motivate further studies on organic photonic materials and devices.
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Affiliation(s)
- Chuang Zhang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Chang-Ling Zou
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Yan Zhao
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Chun-Hua Dong
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Cong Wei
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hanlin Wang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yunqi Liu
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Guang-Can Guo
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Jiannian Yao
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Corresponding author. E-mail: (Y.S.Z.); (J.Y.)
| | - Yong Sheng Zhao
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Corresponding author. E-mail: (Y.S.Z.); (J.Y.)
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10
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Darwish N, Aragonès AC, Darwish T, Ciampi S, Díez-Pérez I. Multi-responsive photo- and chemo-electrical single-molecule switches. Nano Lett 2014; 14:7064-70. [PMID: 25419986 DOI: 10.1021/nl5034599] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Incorporating molecular switches as the active components in nanoscale electrical devices represents a current challenge in molecular electronics. It demands key requirements that need to be simultaneously addressed including fast responses to external stimuli and stable attachment of the molecules to the electrodes while mimicking the operation of conventional electronic components. Here, we report a single-molecule switching device that responds electrically to optical and chemical stimuli. A light pointer or a chemical signal can rapidly and reversibly induce the isomerization of bifunctional spiropyran derivatives in the bulk reservoir and, consequently, switch the electrical conductivity of the single-molecule device between a low and a high level. The spiropyran derivatives employed are chemically functionalized such that they can respond in fast but practical time scales. The unique multistimuli response and the synthetic versatility to control the switching schemes of this single-molecule device suggest spiropyran derivatives as key candidates for molecular circuitry.
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Affiliation(s)
- Nadim Darwish
- Departament de Química Física, Universitat de Barcelona , Diagonal 645, Barcelona 08028, Spain
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