Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor
The switching properties, gelation behavior, and self-organization of a cholesterol-stoppered bistable [2]rotaxane containing a cyclobis(paraquat-p-phenylene) ring and tetrathiafulvalene/1,5-dioxynaphthalene recognition units situated in the rod portion of the dumbbell component have been investigat...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2011
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| Online Access: | https://hdl.handle.net/10356/92262 http://hdl.handle.net/10220/7040 |
| _version_ | 1824454501861425152 |
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| author | Zhao, Yanli Aprahamian, Ivan Trabolsi, Ali Erina, Natalia Stoddart, J. Fraser |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Zhao, Yanli Aprahamian, Ivan Trabolsi, Ali Erina, Natalia Stoddart, J. Fraser |
| author_sort | Zhao, Yanli |
| collection | NTU |
| description | The switching properties, gelation behavior, and self-organization of a cholesterol-stoppered bistable [2]rotaxane containing a cyclobis(paraquat-p-phenylene) ring and tetrathiafulvalene/1,5-dioxynaphthalene recognition units situated in the rod portion of the dumbbell component have been investigated by electrochemical, spectroscopic, and microscopic means. The cyclobis(paraquat-p-phenylene) ring in the [2]rotaxane can be switched between the tetrathiafulvalene and 1,5-dioxynaphthalene recognition units by addressing the redox properties of the tetrathiafulvalene unit. The organogels can be prepared by dissolving the [2]rotaxane and its dumbbell precursor in a CH2Cl2/MeOH (3:2) mixed solvent and liquified by adding the oxidant Fe(ClO4)3. Direct evidence for the self-organization was obtained from AFM investigations which have shown that both of the [2]rotaxane and its dumbbell precursor form linear superstructures which we propose are helical in nature. |
| first_indexed | 2025-02-19T03:23:19Z |
| format | Journal Article |
| id | ntu-10356/92262 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:23:19Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | ntu-10356/922622020-03-07T12:37:08Z Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor Zhao, Yanli Aprahamian, Ivan Trabolsi, Ali Erina, Natalia Stoddart, J. Fraser School of Physical and Mathematical Sciences DRNTU::Science::Biological sciences::Biochemistry The switching properties, gelation behavior, and self-organization of a cholesterol-stoppered bistable [2]rotaxane containing a cyclobis(paraquat-p-phenylene) ring and tetrathiafulvalene/1,5-dioxynaphthalene recognition units situated in the rod portion of the dumbbell component have been investigated by electrochemical, spectroscopic, and microscopic means. The cyclobis(paraquat-p-phenylene) ring in the [2]rotaxane can be switched between the tetrathiafulvalene and 1,5-dioxynaphthalene recognition units by addressing the redox properties of the tetrathiafulvalene unit. The organogels can be prepared by dissolving the [2]rotaxane and its dumbbell precursor in a CH2Cl2/MeOH (3:2) mixed solvent and liquified by adding the oxidant Fe(ClO4)3. Direct evidence for the self-organization was obtained from AFM investigations which have shown that both of the [2]rotaxane and its dumbbell precursor form linear superstructures which we propose are helical in nature. 2011-09-13T02:56:37Z 2019-12-06T18:20:12Z 2011-09-13T02:56:37Z 2019-12-06T18:20:12Z 2008 2008 Journal Article Zhao, Y. L., Aprahamian, I., Trabolsi, A., Erina, N., & Stoddart, J. F. (2008). Organogel Formation by a Cholesterol-Stoppered Bistable [2]Rotaxane and Its Dumbbell Precursor. Journal of the American Chemical Society, 130(20), 6348-6350. 0002-7863 https://hdl.handle.net/10356/92262 http://hdl.handle.net/10220/7040 10.1021/ja800731k 159734 en Journal of the American chemical society © 2008 American Chemical Society 3 p. |
| spellingShingle | DRNTU::Science::Biological sciences::Biochemistry Zhao, Yanli Aprahamian, Ivan Trabolsi, Ali Erina, Natalia Stoddart, J. Fraser Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor |
| title | Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor |
| title_full | Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor |
| title_fullStr | Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor |
| title_full_unstemmed | Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor |
| title_short | Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor |
| title_sort | organogel formation by a cholesterol stoppered bistable 2 rotaxane and its dumbbell precursor |
| topic | DRNTU::Science::Biological sciences::Biochemistry |
| url | https://hdl.handle.net/10356/92262 http://hdl.handle.net/10220/7040 |
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