Hindered fluorescence quenching in an insulated molecular wire.
A [3]rotaxane 2 within 1(2) consisting of an anionic phenylene ethynylene dumbbell 2(4-) threaded through two cationic cyclophanes 1(2+) has been prepared using aqueous Glaser coupling. Stern-Volmer analysis of the fluorescence quenching using three different electron-acceptors (methyl viologen 13(2...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2003
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| _version_ | 1797068221173465088 |
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| author | Taylor, P Hagan, A Anderson, H |
| author_facet | Taylor, P Hagan, A Anderson, H |
| author_sort | Taylor, P |
| collection | OXFORD |
| description | A [3]rotaxane 2 within 1(2) consisting of an anionic phenylene ethynylene dumbbell 2(4-) threaded through two cationic cyclophanes 1(2+) has been prepared using aqueous Glaser coupling. Stern-Volmer analysis of the fluorescence quenching using three different electron-acceptors (methyl viologen 13(2+), dipropyl-4,4'-bipyridinium disulfonate 14 and anthraquinone-2,6-disulfonate 15(2-)) shows that the threaded cyclophanes inhibit electron-transfer from the excited state of the dumbbell by steric shielding, and by electrostatic shielding in the case of methyl viologen. |
| first_indexed | 2024-03-06T22:07:35Z |
| format | Journal article |
| id | oxford-uuid:50ad0de8-1c5d-4b0c-a950-d34c4e4edb66 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:07:35Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:50ad0de8-1c5d-4b0c-a950-d34c4e4edb662022-03-26T16:15:04ZHindered fluorescence quenching in an insulated molecular wire.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:50ad0de8-1c5d-4b0c-a950-d34c4e4edb66EnglishSymplectic Elements at Oxford2003Taylor, PHagan, AAnderson, HA [3]rotaxane 2 within 1(2) consisting of an anionic phenylene ethynylene dumbbell 2(4-) threaded through two cationic cyclophanes 1(2+) has been prepared using aqueous Glaser coupling. Stern-Volmer analysis of the fluorescence quenching using three different electron-acceptors (methyl viologen 13(2+), dipropyl-4,4'-bipyridinium disulfonate 14 and anthraquinone-2,6-disulfonate 15(2-)) shows that the threaded cyclophanes inhibit electron-transfer from the excited state of the dumbbell by steric shielding, and by electrostatic shielding in the case of methyl viologen. |
| spellingShingle | Taylor, P Hagan, A Anderson, H Hindered fluorescence quenching in an insulated molecular wire. |
| title | Hindered fluorescence quenching in an insulated molecular wire. |
| title_full | Hindered fluorescence quenching in an insulated molecular wire. |
| title_fullStr | Hindered fluorescence quenching in an insulated molecular wire. |
| title_full_unstemmed | Hindered fluorescence quenching in an insulated molecular wire. |
| title_short | Hindered fluorescence quenching in an insulated molecular wire. |
| title_sort | hindered fluorescence quenching in an insulated molecular wire |
| work_keys_str_mv | AT taylorp hinderedfluorescencequenchinginaninsulatedmolecularwire AT hagana hinderedfluorescencequenchinginaninsulatedmolecularwire AT andersonh hinderedfluorescencequenchinginaninsulatedmolecularwire |