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http://hdl.handle.net/2289/5924| Title: | Synthesis of Banana-Shaped liquid crystals for photoswitching properties. |
| Authors: | Lutfor, M.R. Yusoff, Mashitah Mohd Hegde, Gurumurthy Srinivasa, H.T. +3 Co-authors |
| Keywords: | Azobenzene isomerization naphthalene, optical image storage, photoswitching |
| Issue Date: | Dec-2013 |
| Publisher: | Taylor & Francis |
| Citation: | Molecular Crystals and Liquid Crystals, 2013, Vol.587, p41-53 |
| Abstract: | 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 photoisomerization behavior 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. |
| Description: | Restricted Access. |
| URI: | http://hdl.handle.net/2289/5924 |
| ISSN: | 1542-1406 1563-5287 (Online) |
| Alternative Location: | http://dx.doi.org/10.1080/15421406.2013.807204 |
| Copyright: | 2013 Taylor & Francis |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2013_MCLC_V587_p41.pdf Restricted Access | Restricted Access | 632.68 kB | Adobe PDF | View/Open Request a copy |
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