Chemically and Mechanically Controlled Single-Molecule Switches Using Spiropyrans
Developing molecular circuits that can function as the active components in electrical devices is an ongoing challenge in molecular electronics. It demands mechanical stability of the single-molecule circuit while simultaneously being responsive to external stimuli mimicking the operation of convent...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
AMER CHEMICAL SOC
2019
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/DE160101101 http://hdl.handle.net/20.500.11937/93927 |
| _version_ | 1848765812798652416 |
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| author | Walkey, M.C. Peiris, Chandramalika Ciampi, Simone C. Aragonès, A. Domínguez-Espíndola, Ruth Jago, D. Pulbrook, T. Skelton, B.W. Sobolev, A.N. Díez Pérez, I. Piggott, M.J. Koutsantonis, G.A. Darwish, Nadim |
| author_facet | Walkey, M.C. Peiris, Chandramalika Ciampi, Simone C. Aragonès, A. Domínguez-Espíndola, Ruth Jago, D. Pulbrook, T. Skelton, B.W. Sobolev, A.N. Díez Pérez, I. Piggott, M.J. Koutsantonis, G.A. Darwish, Nadim |
| author_sort | Walkey, M.C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Developing molecular circuits that can function as the active components in electrical devices is an ongoing challenge in molecular electronics. It demands mechanical stability of the single-molecule circuit while simultaneously being responsive to external stimuli mimicking the operation of conventional electronic components. Here, we report single-molecule circuits based on spiropyran derivatives that respond electrically to chemical and mechanical stimuli. The merocyanine that results from the protonation/ring-opening of the spiropyran form showed single-molecule diode characteristics, with an average current rectification ratio of 5 at ±1 V, favoring the orientation where the positively charged end of the molecule is attached to the negative terminal of the circuit. Mechanical pulling of a single spiropyran molecule drives a switch to a more conducting merocyanine state. The mechanical switching is enabled by the strong Au-C covalent bonding between the molecule and the electrodes, which allows the tensile force delivered by the STM piezo to break the molecule at its spiropyran C-O bond. |
| first_indexed | 2025-11-14T11:41:12Z |
| format | Journal Article |
| id | curtin-20.500.11937-93927 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:41:12Z |
| publishDate | 2019 |
| publisher | AMER CHEMICAL SOC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-939272024-01-18T02:53:30Z Chemically and Mechanically Controlled Single-Molecule Switches Using Spiropyrans Walkey, M.C. Peiris, Chandramalika Ciampi, Simone C. Aragonès, A. Domínguez-Espíndola, Ruth Jago, D. Pulbrook, T. Skelton, B.W. Sobolev, A.N. Díez Pérez, I. Piggott, M.J. Koutsantonis, G.A. Darwish, Nadim Science & Technology Technology Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science single-molecule switches mechano-electronic switches chemo-electronic switches single-molecule electronics molecular electronics TRANSPORT DESIGN chemo-electronic switches mechano-electronic switches molecular electronics single-molecule electronics single-molecule switches Developing molecular circuits that can function as the active components in electrical devices is an ongoing challenge in molecular electronics. It demands mechanical stability of the single-molecule circuit while simultaneously being responsive to external stimuli mimicking the operation of conventional electronic components. Here, we report single-molecule circuits based on spiropyran derivatives that respond electrically to chemical and mechanical stimuli. The merocyanine that results from the protonation/ring-opening of the spiropyran form showed single-molecule diode characteristics, with an average current rectification ratio of 5 at ±1 V, favoring the orientation where the positively charged end of the molecule is attached to the negative terminal of the circuit. Mechanical pulling of a single spiropyran molecule drives a switch to a more conducting merocyanine state. The mechanical switching is enabled by the strong Au-C covalent bonding between the molecule and the electrodes, which allows the tensile force delivered by the STM piezo to break the molecule at its spiropyran C-O bond. 2019 Journal Article http://hdl.handle.net/20.500.11937/93927 10.1021/acsami.9b11044 English http://purl.org/au-research/grants/arc/DE160101101 http://purl.org/au-research/grants/arc/DE160100732 http://purl.org/au-research/grants/arc/DP190100735 http://purl.org/au-research/grants/arc/DP150104117 AMER CHEMICAL SOC fulltext |
| spellingShingle | Science & Technology Technology Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science single-molecule switches mechano-electronic switches chemo-electronic switches single-molecule electronics molecular electronics TRANSPORT DESIGN chemo-electronic switches mechano-electronic switches molecular electronics single-molecule electronics single-molecule switches Walkey, M.C. Peiris, Chandramalika Ciampi, Simone C. Aragonès, A. Domínguez-Espíndola, Ruth Jago, D. Pulbrook, T. Skelton, B.W. Sobolev, A.N. Díez Pérez, I. Piggott, M.J. Koutsantonis, G.A. Darwish, Nadim Chemically and Mechanically Controlled Single-Molecule Switches Using Spiropyrans |
| title | Chemically and Mechanically Controlled Single-Molecule Switches Using Spiropyrans |
| title_full | Chemically and Mechanically Controlled Single-Molecule Switches Using Spiropyrans |
| title_fullStr | Chemically and Mechanically Controlled Single-Molecule Switches Using Spiropyrans |
| title_full_unstemmed | Chemically and Mechanically Controlled Single-Molecule Switches Using Spiropyrans |
| title_short | Chemically and Mechanically Controlled Single-Molecule Switches Using Spiropyrans |
| title_sort | chemically and mechanically controlled single-molecule switches using spiropyrans |
| topic | Science & Technology Technology Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science single-molecule switches mechano-electronic switches chemo-electronic switches single-molecule electronics molecular electronics TRANSPORT DESIGN chemo-electronic switches mechano-electronic switches molecular electronics single-molecule electronics single-molecule switches |
| url | http://purl.org/au-research/grants/arc/DE160101101 http://purl.org/au-research/grants/arc/DE160101101 http://purl.org/au-research/grants/arc/DE160101101 http://purl.org/au-research/grants/arc/DE160101101 http://hdl.handle.net/20.500.11937/93927 |