Synthesis of Banana-Shaped Liquid Crystals for Photoswitching Properties
Three banana-shaped monomers containing naphthalene as central units and azobenzene in side arms with terminal alkenes were synthesized and characterized. DSC, polarizing optical microscopy, and X-ray diffraction measurements prove that all compounds exhibit B6 phase. The trans-azobenzene showed hig...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis
2013
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/7480/1/Synthesis_of_Banana-Shaped_Liquid_Crystals_for_Photoswitching_Properties.pdf |
| _version_ | 1796990271058083840 |
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| author | Lutfor, M. R. M. M., Yusoff Hegde, Gurumurthy Muhammad Nor Fazli, Abd Malek Nurlin, Abu Samah H. T., Srinivasa |
| author_facet | Lutfor, M. R. M. M., Yusoff Hegde, Gurumurthy Muhammad Nor Fazli, Abd Malek Nurlin, Abu Samah H. T., Srinivasa |
| author_sort | Lutfor, M. R. |
| collection | UMP |
| description | Three banana-shaped monomers containing naphthalene as central units and azobenzene in side arms with terminal alkenes were synthesized and characterized. DSC, polarizing optical microscopy, and X-ray diffraction measurements prove that all compounds exhibit B6 phase. The trans-azobenzene showed high-intensity π–π∗ transition at about 365 nm and low-intensity n–π∗ transition at about 450 nm. The strong hotoisomerizationbehavior in solutions of the molecules displayed that trans to cis isomerization takes 45 sec whereas reverse process takes about 28 h and 30 min. This long thermal back relaxation is useful for creation of optical image storage. |
| first_indexed | 2024-03-06T11:49:09Z |
| format | Article |
| id | UMPir7480 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T11:49:09Z |
| publishDate | 2013 |
| publisher | Taylor & Francis |
| record_format | dspace |
| spelling | UMPir74802018-02-07T08:04:40Z http://umpir.ump.edu.my/id/eprint/7480/ Synthesis of Banana-Shaped Liquid Crystals for Photoswitching Properties Lutfor, M. R. M. M., Yusoff Hegde, Gurumurthy Muhammad Nor Fazli, Abd Malek Nurlin, Abu Samah H. T., Srinivasa Q Science (General) Three banana-shaped monomers containing naphthalene as central units and azobenzene in side arms with terminal alkenes were synthesized and characterized. DSC, polarizing optical microscopy, and X-ray diffraction measurements prove that all compounds exhibit B6 phase. The trans-azobenzene showed high-intensity π–π∗ transition at about 365 nm and low-intensity n–π∗ transition at about 450 nm. The strong hotoisomerizationbehavior in solutions of the molecules displayed that trans to cis isomerization takes 45 sec whereas reverse process takes about 28 h and 30 min. This long thermal back relaxation is useful for creation of optical image storage. Taylor & Francis 2013 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/7480/1/Synthesis_of_Banana-Shaped_Liquid_Crystals_for_Photoswitching_Properties.pdf Lutfor, M. R. and M. M., Yusoff and Hegde, Gurumurthy and Muhammad Nor Fazli, Abd Malek and Nurlin, Abu Samah and H. T., Srinivasa (2013) Synthesis of Banana-Shaped Liquid Crystals for Photoswitching Properties. Molecular Crystals and Liquid Crystals, 587. pp. 41-53. ISSN 1542-1406 (print); 1563-5287 (online). (Published) http://dx.doi.org/10.1080/15421406.2013.807204 DOI: 10.1080/15421406.2013.807204 |
| spellingShingle | Q Science (General) Lutfor, M. R. M. M., Yusoff Hegde, Gurumurthy Muhammad Nor Fazli, Abd Malek Nurlin, Abu Samah H. T., Srinivasa Synthesis of Banana-Shaped Liquid Crystals for Photoswitching Properties |
| title | Synthesis of Banana-Shaped Liquid Crystals for Photoswitching Properties |
| title_full | Synthesis of Banana-Shaped Liquid Crystals for Photoswitching Properties |
| title_fullStr | Synthesis of Banana-Shaped Liquid Crystals for Photoswitching Properties |
| title_full_unstemmed | Synthesis of Banana-Shaped Liquid Crystals for Photoswitching Properties |
| title_short | Synthesis of Banana-Shaped Liquid Crystals for Photoswitching Properties |
| title_sort | synthesis of banana shaped liquid crystals for photoswitching properties |
| topic | Q Science (General) |
| url | http://umpir.ump.edu.my/id/eprint/7480/1/Synthesis_of_Banana-Shaped_Liquid_Crystals_for_Photoswitching_Properties.pdf |
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