Optical Sensing and Switching with Designed Molecules
Some of the recent research in optical sensor and switch molecules at Queen's University of Belfast is out-lined. The ion-induced absorption spectral changes of molecules with ICT (Internal Charge Transfer) excited states are used to demonstrate superposed logic where multiple logic c...
| Main Authors: | , |
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| Format: | Article |
| Language: | deu |
| Published: |
Swiss Chemical Society
2005-05-01
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| Series: | CHIMIA |
| Subjects: | |
| Online Access: | https://chimia.ch/chimia/article/view/3975 |
| _version_ | 1811214378670751744 |
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| author | A. Prasanna de Silva David C. Magri |
| author_facet | A. Prasanna de Silva David C. Magri |
| author_sort | A. Prasanna de Silva |
| collection | DOAJ |
| description |
Some of the recent research in optical sensor and switch molecules at Queen's University of Belfast is out-lined. The ion-induced absorption spectral changes of molecules with ICT (Internal Charge Transfer) excited states are used to demonstrate superposed logic where multiple logic
configurations are simultaneously observable. Similar spectral effects in multi-receptor structures give rise to XOR logic. The ion-induced luminescent spectral changes of molecules with ICT excited states can be combined with the phenomenon of Photoinduced Electron Transfer (PET) to exemplify
tristable systems. Insights can also be gained into the luminescence effects initiated in designed molecules by transition metal ions in non-aqueous media. The ion-induced luminescent spectral changes of PET systems with one or two receptors display YES and AND logic respectively. The latter
yield coincidence sensors for the direct detection of ion pairs. Overall, interesting optical sensors and switches can be produced from rather small molecules when the latter are fitted with ion-receptors.
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| first_indexed | 2024-04-12T06:03:23Z |
| format | Article |
| id | doaj.art-17c5e5cd5b774c96a61d1b64239a1edb |
| institution | Directory Open Access Journal |
| issn | 0009-4293 2673-2424 |
| language | deu |
| last_indexed | 2024-04-12T06:03:23Z |
| publishDate | 2005-05-01 |
| publisher | Swiss Chemical Society |
| record_format | Article |
| series | CHIMIA |
| spelling | doaj.art-17c5e5cd5b774c96a61d1b64239a1edb2022-12-22T03:44:58ZdeuSwiss Chemical SocietyCHIMIA0009-42932673-24242005-05-0159510.2533/000942905777676579Optical Sensing and Switching with Designed MoleculesA. Prasanna de SilvaDavid C. Magri Some of the recent research in optical sensor and switch molecules at Queen's University of Belfast is out-lined. The ion-induced absorption spectral changes of molecules with ICT (Internal Charge Transfer) excited states are used to demonstrate superposed logic where multiple logic configurations are simultaneously observable. Similar spectral effects in multi-receptor structures give rise to XOR logic. The ion-induced luminescent spectral changes of molecules with ICT excited states can be combined with the phenomenon of Photoinduced Electron Transfer (PET) to exemplify tristable systems. Insights can also be gained into the luminescence effects initiated in designed molecules by transition metal ions in non-aqueous media. The ion-induced luminescent spectral changes of PET systems with one or two receptors display YES and AND logic respectively. The latter yield coincidence sensors for the direct detection of ion pairs. Overall, interesting optical sensors and switches can be produced from rather small molecules when the latter are fitted with ion-receptors. https://chimia.ch/chimia/article/view/3975Fluorescent ict sensorsFluorescent pet sensorsIndicatorsMolecular logic gates |
| spellingShingle | A. Prasanna de Silva David C. Magri Optical Sensing and Switching with Designed Molecules CHIMIA Fluorescent ict sensors Fluorescent pet sensors Indicators Molecular logic gates |
| title | Optical Sensing and Switching with Designed Molecules |
| title_full | Optical Sensing and Switching with Designed Molecules |
| title_fullStr | Optical Sensing and Switching with Designed Molecules |
| title_full_unstemmed | Optical Sensing and Switching with Designed Molecules |
| title_short | Optical Sensing and Switching with Designed Molecules |
| title_sort | optical sensing and switching with designed molecules |
| topic | Fluorescent ict sensors Fluorescent pet sensors Indicators Molecular logic gates |
| url | https://chimia.ch/chimia/article/view/3975 |
| work_keys_str_mv | AT aprasannadesilva opticalsensingandswitchingwithdesignedmolecules AT davidcmagri opticalsensingandswitchingwithdesignedmolecules |